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<!DOCTYPE html>
<html lang="en-US" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Rules | Robust Validator</title>
<meta name="description" content="Another data validation library">
<meta name="generator" content="VitePress v1.0.0-rc.32">
<link rel="preload stylesheet" href="/assets/style.BfCMp2bG.css" as="style">
<script type="module" src="/assets/app.D4E3cZaz.js"></script>
<link rel="preload" href="/assets/inter-roman-latin.Bu8hRsVA.woff2" as="font" type="font/woff2" crossorigin="">
<link rel="modulepreload" href="/assets/chunks/theme.D_iCQNuL.js">
<link rel="modulepreload" href="/assets/chunks/framework.CAothSqJ.js">
<link rel="modulepreload" href="/assets/rules.md.BNE2Opk6.lean.js">
<script id="check-dark-mode">(()=>{const e=localStorage.getItem("vitepress-theme-appearance")||"auto",a=window.matchMedia("(prefers-color-scheme: dark)").matches;(!e||e==="auto"?a:e==="dark")&&document.documentElement.classList.add("dark")})();</script>
<script id="check-mac-os">document.documentElement.classList.toggle("mac",/Mac|iPhone|iPod|iPad/i.test(navigator.platform));</script>
</head>
<body>
<div id="app"><div class="Layout" data-v-9d8abc1e><!--[--><!--]--><!--[--><span tabindex="-1" data-v-c8291ffa></span><a href="#VPContent" class="VPSkipLink visually-hidden" data-v-c8291ffa> Skip to content </a><!--]--><!----><header class="VPNav" data-v-9d8abc1e data-v-7ad780c2><div class="VPNavBar has-sidebar" data-v-7ad780c2 data-v-5befd255><div class="container" data-v-5befd255><div class="title" data-v-5befd255><div class="VPNavBarTitle has-sidebar" data-v-5befd255 data-v-2973dbb4><a class="title" href="/" data-v-2973dbb4><!--[--><!--]--><!----><!--[-->Robust Validator<!--]--><!--[--><!--]--></a></div></div><div class="content" data-v-5befd255><div class="curtain" data-v-5befd255></div><div class="content-body" data-v-5befd255><!--[--><!--]--><div class="VPNavBarSearch search" data-v-5befd255><!--[--><!----><div id="local-search"><button type="button" class="DocSearch DocSearch-Button" aria-label="Search"><span class="DocSearch-Button-Container"><svg class="DocSearch-Search-Icon" width="20" height="20" viewBox="0 0 20 20" aria-label="search icon"><path d="M14.386 14.386l4.0877 4.0877-4.0877-4.0877c-2.9418 2.9419-7.7115 2.9419-10.6533 0-2.9419-2.9418-2.9419-7.7115 0-10.6533 2.9418-2.9419 7.7115-2.9419 10.6533 0 2.9419 2.9418 2.9419 7.7115 0 10.6533z" stroke="currentColor" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">Search</span></span><span class="DocSearch-Button-Keys"><kbd class="DocSearch-Button-Key"></kbd><kbd class="DocSearch-Button-Key">K</kbd></span></button></div><!--]--></div><nav aria-labelledby="main-nav-aria-label" class="VPNavBarMenu menu" data-v-5befd255 data-v-f732b5d0><span id="main-nav-aria-label" class="visually-hidden" data-v-f732b5d0>Main Navigation</span><!--[--><!--[--><a class="VPLink link vp-external-link-icon VPNavBarMenuLink" href="https://validator.axe-api.com/demo" target="_blank" rel="noreferrer" tabindex="0" data-v-f732b5d0 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class="VPSidebar" data-v-9d8abc1e data-v-168699b1><div class="curtain" data-v-168699b1></div><nav class="nav" id="VPSidebarNav" aria-labelledby="sidebar-aria-label" tabindex="-1" data-v-168699b1><span class="visually-hidden" id="sidebar-aria-label" data-v-168699b1> Sidebar Navigation </span><!--[--><!--]--><!--[--><div class="group" data-v-168699b1><section class="VPSidebarItem level-0" data-v-168699b1 data-v-bd01e0d5><div class="item" role="button" tabindex="0" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><h2 class="text" data-v-bd01e0d5>Introduction</h2><!----></div><div class="items" data-v-bd01e0d5><!--[--><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/why.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>Why?</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/getting-started.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>Getting started</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/examples.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>Examples</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/terminology.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>Terminology</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-168699b1><section class="VPSidebarItem level-0 has-active" data-v-168699b1 data-v-bd01e0d5><div class="item" role="button" tabindex="0" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><h2 class="text" data-v-bd01e0d5>Reference</h2><!----></div><div class="items" data-v-bd01e0d5><!--[--><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/rules.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>Rules</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/i18n.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>i18n</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/customization.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>Customization</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-bd01e0d5 data-v-bd01e0d5><div class="item" data-v-bd01e0d5><div class="indicator" data-v-bd01e0d5></div><a class="VPLink link link" href="/options.html" data-v-bd01e0d5><!--[--><p class="text" data-v-bd01e0d5>Options</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-9d8abc1e data-v-3cf691b6><div class="VPDoc has-sidebar has-aside" data-v-3cf691b6 data-v-a3c25e27><!--[--><!--]--><div class="container" data-v-a3c25e27><div class="aside" data-v-a3c25e27><div class="aside-curtain" data-v-a3c25e27></div><div class="aside-container" data-v-a3c25e27><div class="aside-content" data-v-a3c25e27><div class="VPDocAside" data-v-a3c25e27 data-v-cb998dce><!--[--><!--]--><!--[--><!--]--><div class="VPDocAsideOutline" role="navigation" data-v-cb998dce data-v-3a6c4994><div class="content" data-v-3a6c4994><div class="outline-marker" data-v-3a6c4994></div><div class="outline-title" role="heading" aria-level="2" data-v-3a6c4994>On this page</div><nav aria-labelledby="doc-outline-aria-label" data-v-3a6c4994><span class="visually-hidden" id="doc-outline-aria-label" data-v-3a6c4994> Table of Contents for current page </span><ul class="root" data-v-3a6c4994 data-v-463da30f><!--[--><!--]--></ul></nav></div></div><!--[--><!--]--><div class="spacer" data-v-cb998dce></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--]--></div></div></div></div><div class="content" data-v-a3c25e27><div class="content-container" data-v-a3c25e27><!--[--><!--]--><!----><main class="main" data-v-a3c25e27><div style="position:relative;" class="vp-doc _rules" data-v-a3c25e27><div><h1 id="rules" tabindex="-1">Rules <a class="header-anchor" href="#rules" aria-label="Permalink to "Rules""></a></h1><p>In this section, you can find the truth tables for all validation rules.</p><div class="tip custom-block"><p class="custom-block-title">TIP</p><p>You can learn more about the <a href="/terminology.html#rule">Rule Terminology</a>.</p></div><div class="warning custom-block"><p class="custom-block-title">WARNING</p><p>Each rule function should validate only one thing. For example, the <code>email</code> validation <strong>should NOT</strong> check if the data is provided. Otherwise, a rule function can not check the optional data.</p><p>That's why <code>null</code> and <code>undefined</code> values are acceptable for all rules except the <code>required</code>.</p><p>If you want to check if the data is provided and is a valid email, you should use two rules (<code>required</code>, <code>email</code>) at the same time.</p></div><h2 id="accepted" tabindex="-1"><code>accepted</code> <a class="header-anchor" href="#accepted" aria-label="Permalink to "`accepted`""></a></h2><p>The field under validation must be <code>yes</code>, <code>on</code>, <code>1</code> or <code>true</code>. This is useful for validating "Terms of Service" acceptance.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-2evHi" id="tab-Rl5M5so" checked="checked"><label for="tab-Rl5M5so">Declarative</label><input type="radio" name="group-2evHi" id="tab-X4WMSSQ"><label for="tab-X4WMSSQ">Function-based</label><input type="radio" name="group-2evHi" id="tab-7HlBAfL"><label for="tab-7HlBAfL">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { terms: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"accepted"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, accepted } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { terms: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">accepted</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isAccepted } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isAccepted</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>accepted</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>accepted</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>accepted</code></td><td><code>'yes'</code></td><td>🟢</td></tr><tr><td><code>accepted</code></td><td><code>'on'</code></td><td>🟢</td></tr><tr><td><code>accepted</code></td><td><code>1</code></td><td>🟢</td></tr><tr><td><code>accepted</code></td><td><code>true</code></td><td>🟢</td></tr><tr><td><code>accepted</code></td><td><code>john</code></td><td>🔴</td></tr><tr><td><code>accepted</code></td><td><code>3.14</code></td><td>🔴</td></tr></tbody></table><h2 id="after-date" tabindex="-1"><code>after:date</code> <a class="header-anchor" href="#after-date" aria-label="Permalink to "`after:date`""></a></h2><p>The field under validation must be after the given date.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-3ansH" id="tab-sl9RSN2" checked="checked"><label for="tab-sl9RSN2">Declarative</label><input type="radio" name="group-3ansH" id="tab-5sm8rSe"><label for="tab-5sm8rSe">Function-based</label><input type="radio" name="group-3ansH" id="tab-9tB7BoB"><label for="tab-9tB7BoB">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"after:2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, after } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">after</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isAfter } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isAfter</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><div class="tip custom-block"><p class="custom-block-title">TIP</p><p>robust-validator library uses the <a href="https://date-fns.org" target="_blank" rel="noreferrer">date-fns</a> for the date validations.</p><p>You can check the possible date formats <a href="https://date-fns.org/v4.1.0/docs/format" target="_blank" rel="noreferrer">here</a>.</p></div><table><thead><tr><th>Rule</th><th>Value</th><th><code>startAt</code></th><th>Is valid?</th></tr></thead><tbody><tr><td><code>after:2024-01-01</code></td><td><code>null</code></td><td></td><td>🔴</td></tr><tr><td><code>after:2024-01-01</code></td><td><code>undefined</code></td><td></td><td>🔴</td></tr><tr><td><code>after:2024-01-01</code></td><td><code>2025-01-01</code></td><td></td><td>🟢</td></tr><tr><td><code>after:startAt</code></td><td><code>2025-01-01</code></td><td><code>2024-01-01</code></td><td>🟢</td></tr><tr><td><code>after:startAt</code></td><td><code>2024-01-01</code></td><td><code>2024-01-01</code></td><td>🔴</td></tr><tr><td><code>after:startAt</code></td><td><code>2024-01-01</code></td><td><code>2025-01-01</code></td><td>🔴</td></tr><tr><td><code>after:2024-01-01</code></td><td><code>2024-01-01</code></td><td></td><td>🔴</td></tr><tr><td><code>after:2024-01-01</code></td><td><code>2020-01-01</code></td><td></td><td>🔴</td></tr></tbody></table><h2 id="after-or-equal-date" tabindex="-1"><code>after_or_equal:date</code> <a class="header-anchor" href="#after-or-equal-date" aria-label="Permalink to "`after_or_equal:date`""></a></h2><p>The field unter validation must be after or equal to the given field</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-cOhEx" id="tab-6Bzzct8" checked="checked"><label for="tab-6Bzzct8">Declarative</label><input type="radio" name="group-cOhEx" id="tab-QmTx8_q"><label for="tab-QmTx8_q">Function-based</label><input type="radio" name="group-cOhEx" id="tab-vvpCs6S"><label for="tab-vvpCs6S">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"after_or_equal:2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, afterOrEqual } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">afterOrEqual</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isAfterOrEqual } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isAfterOrEqual</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><div class="tip custom-block"><p class="custom-block-title">TIP</p><p>robust-validator library uses the <a href="https://date-fns.org" target="_blank" rel="noreferrer">date-fns</a> for the date validations.</p><p>You can check the possible date formats <a href="https://date-fns.org/v4.1.0/docs/format" target="_blank" rel="noreferrer">here</a>.</p></div><table><thead><tr><th>Rule</th><th>Value</th><th><code>startAt</code></th><th>Is valid?</th></tr></thead><tbody><tr><td><code>after_or_equal:2024-01-01</code></td><td><code>null</code></td><td></td><td>🔴</td></tr><tr><td><code>after_or_equal:2024-01-01</code></td><td><code>undefined</code></td><td></td><td>🔴</td></tr><tr><td><code>after_or_equal:2024-01-01</code></td><td><code>2025-01-01</code></td><td></td><td>🟢</td></tr><tr><td><code>after_or_equal:2024-01-01</code></td><td><code>2024-01-01</code></td><td></td><td>🟢</td></tr><tr><td><code>after_or_equal:startAt</code></td><td><code>2025-01-01</code></td><td><code>2024-01-01</code></td><td>🟢</td></tr><tr><td><code>after_or_equal:startAt</code></td><td><code>2024-01-01</code></td><td><code>2024-01-01</code></td><td>🟢</td></tr><tr><td><code>after_or_equal:startAt</code></td><td><code>2024-01-01</code></td><td><code>2025-01-01</code></td><td>🔴</td></tr><tr><td><code>after_or_equal:2024-01-01</code></td><td><code>2020-01-01</code></td><td></td><td>🔴</td></tr></tbody></table><h2 id="alpha" tabindex="-1"><code>alpha</code> <a class="header-anchor" href="#alpha" aria-label="Permalink to "`alpha`""></a></h2><p>The field under validation must be entirely alphabetic characters.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-ku7aZ" id="tab--kR1NMx" checked="checked"><label for="tab--kR1NMx">Declarative</label><input type="radio" name="group-ku7aZ" id="tab-YGBEdJm"><label for="tab-YGBEdJm">Function-based</label><input type="radio" name="group-ku7aZ" id="tab-Ex4CcHv"><label for="tab-Ex4CcHv">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { username: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"alpha"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, alpha } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { username: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">alpha</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isAlpha } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isAlpha</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>alpha</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>alpha</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>alpha</code></td><td><code>john</code></td><td>🟢</td></tr><tr><td><code>alpha</code></td><td><code>john123</code></td><td>🔴</td></tr><tr><td><code>alpha</code></td><td><code>john-doe</code></td><td>🔴</td></tr><tr><td><code>alpha</code></td><td><code>123</code></td><td>🔴</td></tr><tr><td><code>alpha</code></td><td><code>3.14</code></td><td>🔴</td></tr><tr><td><code>alpha</code></td><td><code>true</code></td><td>🔴</td></tr></tbody></table><h2 id="alpha-dash" tabindex="-1"><code>alpha_dash</code> <a class="header-anchor" href="#alpha-dash" aria-label="Permalink to "`alpha_dash`""></a></h2><p>The field under validation may have alpha-numeric characters, as well as dashes and underscores.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-_l0VF" id="tab-O6xPB_l" checked="checked"><label for="tab-O6xPB_l">Declarative</label><input type="radio" name="group-_l0VF" id="tab-TLY1fe_"><label for="tab-TLY1fe_">Function-based</label><input type="radio" name="group-_l0VF" id="tab-_dJFBzN"><label for="tab-_dJFBzN">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { username: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"alpha_dash"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, alphaDash } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { username: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">alphaDash</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isAlphaDash } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isAlphaDash</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>alpha_dash</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>alpha_dash</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>alpha_dash</code></td><td><code>john</code></td><td>🟢</td></tr><tr><td><code>alpha_dash</code></td><td><code>john-doe</code></td><td>🟢</td></tr><tr><td><code>alpha_dash</code></td><td><code>john_doe</code></td><td>🟢</td></tr><tr><td><code>alpha_dash</code></td><td><code>john123</code></td><td>🔴</td></tr><tr><td><code>alpha_dash</code></td><td><code>123</code></td><td>🔴</td></tr><tr><td><code>alpha_dash</code></td><td><code>3.14</code></td><td>🔴</td></tr><tr><td><code>alpha_dash</code></td><td><code>true</code></td><td>🔴</td></tr></tbody></table><h2 id="alpha-num" tabindex="-1"><code>alpha_num</code> <a class="header-anchor" href="#alpha-num" aria-label="Permalink to "`alpha_num`""></a></h2><p>The field under validation must be entirely alpha-numeric characters.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-BGTzE" id="tab-yMqLk5L" checked="checked"><label for="tab-yMqLk5L">Declarative</label><input type="radio" name="group-BGTzE" id="tab-N6sFyd1"><label for="tab-N6sFyd1">Function-based</label><input type="radio" name="group-BGTzE" id="tab-IQ0JPbA"><label for="tab-IQ0JPbA">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { username: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"alpha_num"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, alphaNum } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { username: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">alphaNum</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isAlphaNum } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isAlphaNum</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>alpha_num</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>alpha_num</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>alpha_num</code></td><td><code>john</code></td><td>🟢</td></tr><tr><td><code>alpha_num</code></td><td><code>john123</code></td><td>🟢</td></tr><tr><td><code>alpha_num</code></td><td><code>john-doe</code></td><td>🔴</td></tr><tr><td><code>alpha_num</code></td><td><code>john_doe</code></td><td>🔴</td></tr><tr><td><code>alpha_num</code></td><td><code>123</code></td><td>🔴</td></tr><tr><td><code>alpha_num</code></td><td><code>3.14</code></td><td>🔴</td></tr><tr><td><code>alpha_num</code></td><td><code>true</code></td><td>🔴</td></tr></tbody></table><h2 id="array" tabindex="-1"><code>array</code> <a class="header-anchor" href="#array" aria-label="Permalink to "`array`""></a></h2><p>The field under validation must be an array.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-PMS-s" id="tab-D2ufQ3Y" checked="checked"><label for="tab-D2ufQ3Y">Declarative</label><input type="radio" name="group-PMS-s" id="tab-Mtk2ozB"><label for="tab-Mtk2ozB">Function-based</label><input type="radio" name="group-PMS-s" id="tab-RjkFT5T"><label for="tab-RjkFT5T">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { selectedIds: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"array"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, array } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { selectedIds: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">array</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isArray } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isArray</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">([</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">1</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">2</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">3</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">]);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>array</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>array</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>array</code></td><td><code>[]</code></td><td>🟢</td></tr><tr><td><code>array</code></td><td><code>[1, 2, 3]</code></td><td>🟢</td></tr><tr><td><code>array</code></td><td><code>[{"id": 1}]</code></td><td>🟢</td></tr><tr><td><code>array</code></td><td><code>john</code></td><td>🔴</td></tr><tr><td><code>array</code></td><td><code>john</code></td><td>🔴</td></tr><tr><td><code>array</code></td><td><code>123</code></td><td>🔴</td></tr><tr><td><code>array</code></td><td><code>3.14</code></td><td>🔴</td></tr><tr><td><code>array</code></td><td><code>true</code></td><td>🔴</td></tr></tbody></table><h2 id="before-date" tabindex="-1"><code>before:date</code> <a class="header-anchor" href="#before-date" aria-label="Permalink to "`before:date`""></a></h2><p>The field under validation must be before the given date.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-Ez_IT" id="tab-hp73opw" checked="checked"><label for="tab-hp73opw">Declarative</label><input type="radio" name="group-Ez_IT" id="tab-cA_P--4"><label for="tab-cA_P--4">Function-based</label><input type="radio" name="group-Ez_IT" id="tab-jnGpaNF"><label for="tab-jnGpaNF">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"before:2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, before } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">before</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isBefore } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isBefore</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><div class="tip custom-block"><p class="custom-block-title">TIP</p><p>robust-validator library uses the <a href="https://date-fns.org" target="_blank" rel="noreferrer">date-fns</a> for the date validations.</p><p>You can check the possible date formats <a href="https://date-fns.org/v4.1.0/docs/format" target="_blank" rel="noreferrer">here</a>.</p></div><table><thead><tr><th>Rule</th><th>Value</th><th><code>finishAt</code></th><th>Is valid?</th></tr></thead><tbody><tr><td><code>before:2024-01-01</code></td><td><code>null</code></td><td></td><td>🔴</td></tr><tr><td><code>before:2024-01-01</code></td><td><code>undefined</code></td><td></td><td>🔴</td></tr><tr><td><code>before:2024-01-01</code></td><td><code>2023-01-01</code></td><td></td><td>🟢</td></tr><tr><td><code>before:finishAt</code></td><td><code>2023-01-01</code></td><td><code>2024-01-01</code></td><td>🟢</td></tr><tr><td><code>before:finishAt</code></td><td><code>2023-01-01</code></td><td><code>2023-01-01</code></td><td>🔴</td></tr><tr><td><code>before:finishAt</code></td><td><code>2023-01-01</code></td><td><code>2022-01-01</code></td><td>🔴</td></tr><tr><td><code>before:2024-01-01</code></td><td><code>2024-01-01</code></td><td></td><td>🔴</td></tr><tr><td><code>before:2024-01-01</code></td><td><code>2025-01-01</code></td><td></td><td>🔴</td></tr></tbody></table><h2 id="before-or-equal-date" tabindex="-1"><code>before_or_equal:date</code> <a class="header-anchor" href="#before-or-equal-date" aria-label="Permalink to "`before_or_equal:date`""></a></h2><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-Dgfh2" id="tab-3_GDM1i" checked="checked"><label for="tab-3_GDM1i">Declarative</label><input type="radio" name="group-Dgfh2" id="tab-1YsMIBo"><label for="tab-1YsMIBo">Function-based</label><input type="radio" name="group-Dgfh2" id="tab-8gxeiFn"><label for="tab-8gxeiFn">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"before_or_equal:2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, beforeOrEqual } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">beforeOrEqual</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isBeforeOrEqual } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isBeforeOrEqual</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-value"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"2023-01-01"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><p>The field under validation must be before or equal to the given date.</p><div class="tip custom-block"><p class="custom-block-title">TIP</p><p>robust-validator library uses the <a href="https://date-fns.org" target="_blank" rel="noreferrer">date-fns</a> for the date validations.</p><p>You can check the possible date formats <a href="https://date-fns.org/v4.1.0/docs/format" target="_blank" rel="noreferrer">here</a>.</p></div><table><thead><tr><th>Rule</th><th>Value</th><th><code>finishAt</code></th><th>Is valid?</th></tr></thead><tbody><tr><td><code>before_or_equal:2024-01-01</code></td><td><code>null</code></td><td></td><td>🔴</td></tr><tr><td><code>before_or_equal:2024-01-01</code></td><td><code>undefined</code></td><td></td><td>🔴</td></tr><tr><td><code>before_or_equal:2024-01-01</code></td><td><code>2023-01-01</code></td><td></td><td>🟢</td></tr><tr><td><code>before_or_equal:2024-01-01</code></td><td><code>2024-01-01</code></td><td></td><td>🟢</td></tr><tr><td><code>before_or_equal:finishAt</code></td><td><code>2023-01-01</code></td><td><code>2024-01-01</code></td><td>🟢</td></tr><tr><td><code>before_or_equal:finishAt</code></td><td><code>2023-01-01</code></td><td><code>2023-01-01</code></td><td>🟢</td></tr><tr><td><code>before_or_equal:finishAt</code></td><td><code>2023-01-01</code></td><td><code>2022-01-01</code></td><td>🔴</td></tr><tr><td><code>before_or_equal:2024-01-01</code></td><td><code>2025-01-01</code></td><td></td><td>🔴</td></tr></tbody></table><h2 id="between-min-max" tabindex="-1"><code>between:min,max</code> <a class="header-anchor" href="#between-min-max" aria-label="Permalink to "`between:min,max`""></a></h2><p>The field under validation must have a size between the given min and max. Strings, and numerics are evaluated in the same fashion as the size rule.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-VJ1cw" id="tab-2X7NFAg" checked="checked"><label for="tab-2X7NFAg">Declarative</label><input type="radio" name="group-VJ1cw" id="tab-uNY8VlV"><label for="tab-uNY8VlV">Function-based</label><input type="radio" name="group-VJ1cw" id="tab-16viEsI"><label for="tab-16viEsI">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { score: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"between:1,10"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, score } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { score: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">score</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">1</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">10</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isBetween } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isBetween</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">3</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">1</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">10</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>between:1,5</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>between:1,5</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>between:1,5</code></td><td><code>'john'</code></td><td>🟢</td></tr><tr><td><code>between:1,5</code></td><td><code>'12345'</code></td><td>🟢</td></tr><tr><td><code>between:1,5</code></td><td><code>long-text</code></td><td>🔴</td></tr><tr><td><code>between:1,5</code></td><td><code>12345</code></td><td>🔴</td></tr></tbody></table><h2 id="boolean" tabindex="-1"><code>boolean</code> <a class="header-anchor" href="#boolean" aria-label="Permalink to "`boolean`""></a></h2><p>The field under validation must be a boolean value of the form true, false, 0, 1, 'true', 'false', '0', '1',</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-27OS9" id="tab-1c3_Xsl" checked="checked"><label for="tab-1c3_Xsl">Declarative</label><input type="radio" name="group-27OS9" id="tab-xEUPCbu"><label for="tab-xEUPCbu">Function-based</label><input type="radio" name="group-27OS9" id="tab-8SOHV2P"><label for="tab-8SOHV2P">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { isOpen: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"boolean"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, boolean } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { isOpen: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">boolean</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isBoolean } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isBoolean</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">true</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>boolean</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>boolean</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>boolean</code></td><td><code>true</code></td><td>🟢</td></tr><tr><td><code>boolean</code></td><td><code>'true'</code></td><td>🟢</td></tr><tr><td><code>boolean</code></td><td><code>1</code></td><td>🟢</td></tr><tr><td><code>boolean</code></td><td><code>'1'</code></td><td>🟢</td></tr><tr><td><code>boolean</code></td><td><code>false</code></td><td>🔴</td></tr><tr><td><code>boolean</code></td><td><code>'false'</code></td><td>🔴</td></tr><tr><td><code>boolean</code></td><td><code>0</code></td><td>🔴</td></tr><tr><td><code>boolean</code></td><td><code>'0'</code></td><td>🔴</td></tr></tbody></table><h2 id="confirmed" tabindex="-1"><code>confirmed</code> <a class="header-anchor" href="#confirmed" aria-label="Permalink to "`confirmed`""></a></h2><p>The field under validation must have a matching field of <code>foo_confirmed</code>. For example, if the field under validation is <code>password</code>, a matching <code>password_confirmed</code> field must be present in the input.</p><p>Let's assume that the value of the <code>password</code> field is <code>123456</code>. If you use the <code>confirmed</code> definition on the <code>password</code> field's rules, the truth table would look like the following example:</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-MgFZN" id="tab-0zFFO9V" checked="checked"><label for="tab-0zFFO9V">Declarative</label><input type="radio" name="group-MgFZN" id="tab-1VbA6j6"><label for="tab-1VbA6j6">Function-based</label><input type="radio" name="group-MgFZN" id="tab-CmfZPjG"><label for="tab-CmfZPjG">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { password: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"confirmed"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, confirmed } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { password: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">confirmed</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isConfirmed } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isConfirmed</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Field</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>password_confirmed</code></td><td><code>123456</code></td><td>🟢</td></tr><tr><td><code>password_confirmed</code></td><td><code>654321</code></td><td>🔴</td></tr><tr><td><code>password_confirmed</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>password_confirmed</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>password_confirmed</code></td><td><code>true</code></td><td>🔴</td></tr><tr><td><code>password_confirmed</code></td><td><code>false</code></td><td>🔴</td></tr><tr><td><code>password_confirmed</code></td><td><code>{}</code></td><td>🔴</td></tr></tbody></table><h2 id="date-format" tabindex="-1"><code>date:format</code> <a class="header-anchor" href="#date-format" aria-label="Permalink to "`date:format`""></a></h2><p>The field under validation must be a valid date format which is acceptable by Javascript's Date object.</p><div class="tip custom-block"><p class="custom-block-title">TIP</p><p>robust-validator library uses the <a href="https://date-fns.org" target="_blank" rel="noreferrer">date-fns</a> for the date validations.</p><p>You can check the possible date formats <a href="https://date-fns.org/v4.1.0/docs/format" target="_blank" rel="noreferrer">here</a>.</p></div><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-PHOYJ" id="tab-Kr7w8JX" checked="checked"><label for="tab-Kr7w8JX">Declarative</label><input type="radio" name="group-PHOYJ" id="tab-_blVvEm"><label for="tab-_blVvEm">Function-based</label><input type="radio" name="group-PHOYJ" id="tab-o0LNhHj"><label for="tab-o0LNhHj">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"date:yyyy-MM-dd"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, date } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { startAt: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">date</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"yyyy-MM-dd"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isDate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isDate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"yyyy-MM-dd"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>date:yyyy-MM-dd</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>2023-12-16</code></td><td>🟢</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>2023-01-01</code></td><td>🟢</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>December 16, 2023 12:00:00</code></td><td>🔴</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>2022-13-01</code></td><td>🔴</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>2022-12-32</code></td><td>🔴</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>2022-02-29</code></td><td>🔴</td></tr><tr><td><code>date:yyyy-MM-dd</code></td><td><code>false</code></td><td>🔴</td></tr></tbody></table><h2 id="digits-value" tabindex="-1"><code>digits:value</code> <a class="header-anchor" href="#digits-value" aria-label="Permalink to "`digits:value`""></a></h2><p>The field under validation must be numeric and must have an exact length of value.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-PGxn_" id="tab-mi72xbf" checked="checked"><label for="tab-mi72xbf">Declarative</label><input type="radio" name="group-PGxn_" id="tab-pp4AL-B"><label for="tab-pp4AL-B">Function-based</label><input type="radio" name="group-PGxn_" id="tab-QzOH2Fq"><label for="tab-QzOH2Fq">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { pin: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"digits:4"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, digits } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { pin: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">digits</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">4</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isDigits } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isDigits</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"1234"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">4</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>digits:4</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>digits:4</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>digits:4</code></td><td><code>1234</code></td><td>🟢</td></tr><tr><td><code>digits:4</code></td><td><code>123</code></td><td>🔴</td></tr><tr><td><code>digits:4</code></td><td><code>true</code></td><td>🔴</td></tr><tr><td><code>digits:4</code></td><td><code>'1234'</code></td><td>🔴</td></tr><tr><td><code>digits:4</code></td><td><code>123456</code></td><td>🔴</td></tr></tbody></table><h2 id="digits-between-min-max" tabindex="-1"><code>digits_between:min,max</code> <a class="header-anchor" href="#digits-between-min-max" aria-label="Permalink to "`digits_between:min,max`""></a></h2><p>The field under validation must be numeric and must have length between given min and max.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-JtT2e" id="tab-UDkIf-c" checked="checked"><label for="tab-UDkIf-c">Declarative</label><input type="radio" name="group-JtT2e" id="tab-xWusuS-"><label for="tab-xWusuS-">Function-based</label><input type="radio" name="group-JtT2e" id="tab-y6nokAK"><label for="tab-y6nokAK">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { pin: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"digits_between:4,6"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, digitsBetween } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { pin: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">digitsBetween</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">4</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">6</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isdigitsBetween } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isdigitsBetween</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"1234"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">4</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">6</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>digits_between:4,6</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>digits_between:4,6</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>digits_between:4,6</code></td><td><code>1234</code></td><td>🟢</td></tr><tr><td><code>digits_between:4,6</code></td><td><code>123456</code></td><td>🟢</td></tr><tr><td><code>digits_between:4,6</code></td><td><code>123</code></td><td>🔴</td></tr><tr><td><code>digits_between:4,6</code></td><td><code>true</code></td><td>🔴</td></tr><tr><td><code>digits_between:4,6</code></td><td><code>'1234'</code></td><td>🔴</td></tr></tbody></table><h2 id="email" tabindex="-1"><code>email</code> <a class="header-anchor" href="#email" aria-label="Permalink to "`email`""></a></h2><p>The field under validation must be formatted as an e-mail address.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-c-Tmd" id="tab-OyI-Ftu" checked="checked"><label for="tab-OyI-Ftu">Declarative</label><input type="radio" name="group-c-Tmd" id="tab-_P1YpFE"><label for="tab-_P1YpFE">Function-based</label><input type="radio" name="group-c-Tmd" id="tab-bkGH3sy"><label for="tab-bkGH3sy">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { contact_email: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"email"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, email } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { contact_email: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">email</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isEmail } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isEmail</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-date"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>email</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>email</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>email</code></td><td><code>[email protected]</code></td><td>🟢</td></tr><tr><td><code>email</code></td><td><code>just a text</code></td><td>🔴</td></tr><tr><td><code>email</code></td><td><code>true</code></td><td>🔴</td></tr><tr><td><code>email</code></td><td><code>'1234'</code></td><td>🔴</td></tr></tbody></table><h2 id="hex" tabindex="-1"><code>hex</code> <a class="header-anchor" href="#hex" aria-label="Permalink to "`hex`""></a></h2><p>The field under validation should be a hexadecimal format.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-BjauK" id="tab-V5us-3S" checked="checked"><label for="tab-V5us-3S">Declarative</label><input type="radio" name="group-BjauK" id="tab-I19Ghg8"><label for="tab-I19Ghg8">Function-based</label><input type="radio" name="group-BjauK" id="tab-F2oCDAn"><label for="tab-F2oCDAn">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { colorCode: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"hex"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, hex } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { colorCode: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">hex</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isHex } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isHex</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"f1f1f1"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>hex</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>hex</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>hex</code></td><td><code>1aF</code></td><td>🟢</td></tr><tr><td><code>hex</code></td><td><code>1234567890ABCDEF</code></td><td>🟢</td></tr><tr><td><code>hex</code></td><td><code>123xyz</code></td><td>🔴</td></tr><tr><td><code>hex</code></td><td><code>0xg</code></td><td>🔴</td></tr><tr><td><code>hex</code></td><td><code>invalid string</code></td><td>🔴</td></tr></tbody></table><h2 id="in-foo-bar" tabindex="-1"><code>in:foo,bar,...</code> <a class="header-anchor" href="#in-foo-bar" aria-label="Permalink to "`in:foo,bar,...`""></a></h2><p>The field under validation must be included in the given list of values.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-ndh3A" id="tab-mxWJHau" checked="checked"><label for="tab-mxWJHau">Declarative</label><input type="radio" name="group-ndh3A" id="tab-1s1YlHn"><label for="tab-1s1YlHn">Function-based</label><input type="radio" name="group-ndh3A" id="tab-NDGj0LU"><label for="tab-NDGj0LU">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { userChoice: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"in:news,marketing"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, in } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { userChoice: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">in</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">([</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"news"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"marketing"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">])] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isIn } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isIn</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, [</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"news"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"marketing"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">]);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>in:A,B</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>in:A,B</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>in:A,B</code></td><td><code>A</code></td><td>🟢</td></tr><tr><td><code>in:A,B</code></td><td><code>B</code></td><td>🟢</td></tr><tr><td><code>in:A,B</code></td><td><code>C</code></td><td>🔴</td></tr><tr><td><code>in:A,B</code></td><td><code>true</code></td><td>🔴</td></tr><tr><td><code>in:A,B</code></td><td><code>{}</code></td><td>🔴</td></tr></tbody></table><h2 id="integer" tabindex="-1"><code>integer</code> <a class="header-anchor" href="#integer" aria-label="Permalink to "`integer`""></a></h2><p>The field under validation must have an integer value.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-EXyPp" id="tab-oW4S-LE" checked="checked"><label for="tab-oW4S-LE">Declarative</label><input type="radio" name="group-EXyPp" id="tab-7Qv8j1s"><label for="tab-7Qv8j1s">Function-based</label><input type="radio" name="group-EXyPp" id="tab-dU1oko1"><label for="tab-dU1oko1">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { age: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"integer"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, integer } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { age: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">integer</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isInteger } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isInteger</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">134</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>integer</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>integer</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>integer</code></td><td><code>123</code></td><td>🟢</td></tr><tr><td><code>integer</code></td><td><code>3.14</code></td><td>🔴</td></tr><tr><td><code>integer</code></td><td><code>abc</code></td><td>🔴</td></tr></tbody></table><h2 id="max-value" tabindex="-1"><code>max:value</code> <a class="header-anchor" href="#max-value" aria-label="Permalink to "`max:value`""></a></h2><p>Validate that an attribute is no greater than a given size</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-N89Cy" id="tab-2CxbTxH" checked="checked"><label for="tab-2CxbTxH">Declarative</label><input type="radio" name="group-N89Cy" id="tab-GYkEKT5"><label for="tab-GYkEKT5">Function-based</label><input type="radio" name="group-N89Cy" id="tab-qpagemK"><label for="tab-qpagemK">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { age: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"max:99"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, max } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { age: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">max</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">99</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isMax } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isMax</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">10</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">99</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>max:5</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>max:5</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>max:5</code></td><td><code>'123'</code></td><td>🟢</td></tr><tr><td><code>max:5</code></td><td><code>3</code></td><td>🟢</td></tr><tr><td><code>max:5</code></td><td><code>'abcdef'</code></td><td>🔴</td></tr><tr><td><code>max:5</code></td><td><code>10</code></td><td>🔴</td></tr></tbody></table><h2 id="min-value" tabindex="-1"><code>min:value</code> <a class="header-anchor" href="#min-value" aria-label="Permalink to "`min:value`""></a></h2><p>Validate that an attribute is at least a given size.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-Y_l93" id="tab-9cjKmEO" checked="checked"><label for="tab-9cjKmEO">Declarative</label><input type="radio" name="group-Y_l93" id="tab-sxEOhXw"><label for="tab-sxEOhXw">Function-based</label><input type="radio" name="group-Y_l93" id="tab-JV-O6GW"><label for="tab-JV-O6GW">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { age: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"min:22"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, min } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { age: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">min</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">22</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isMin } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isMin</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">10</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">22</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>min:5</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>min:5</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>min:5</code></td><td><code>'abcdef'</code></td><td>🟢</td></tr><tr><td><code>min:5</code></td><td><code>'123456'</code></td><td>🟢</td></tr><tr><td><code>min:5</code></td><td><code>10</code></td><td>🟢</td></tr><tr><td><code>min:5</code></td><td><code>'abcdef'</code></td><td>🔴</td></tr><tr><td><code>min:5</code></td><td><code>2</code></td><td>🔴</td></tr></tbody></table><h2 id="not-in-foo-bar" tabindex="-1"><code>not_in:foo,bar,...</code> <a class="header-anchor" href="#not-in-foo-bar" aria-label="Permalink to "`not_in:foo,bar,...`""></a></h2><p>The field under validation must not be included in the given list of values.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-cSRBW" id="tab-2Rk9_wp" checked="checked"><label for="tab-2Rk9_wp">Declarative</label><input type="radio" name="group-cSRBW" id="tab-ApHQkWl"><label for="tab-ApHQkWl">Function-based</label><input type="radio" name="group-cSRBW" id="tab-RViQ52d"><label for="tab-RViQ52d">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { userChoice: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"not_in:news,marketing"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, notIn } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { userChoice: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">notIn</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">([</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"news"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"marketing"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">])] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isNotIn } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isNotIn</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, [</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"news"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"marketing"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">]);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>not_in:A,B</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>not_in:A,B</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>not_in:A,B</code></td><td><code>C</code></td><td>🟢</td></tr><tr><td><code>not_in:A,B</code></td><td><code>A</code></td><td>🔴</td></tr><tr><td><code>not_in:A,B</code></td><td><code>B</code></td><td>🔴</td></tr><tr><td><code>not_in:A,B</code></td><td><code>true</code></td><td>🔴</td></tr></tbody></table><h2 id="numeric" tabindex="-1"><code>numeric</code> <a class="header-anchor" href="#numeric" aria-label="Permalink to "`numeric`""></a></h2><p>Validate that an attribute is numeric.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-MFzm4" id="tab-lO2Rm-a" checked="checked"><label for="tab-lO2Rm-a">Declarative</label><input type="radio" name="group-MFzm4" id="tab-QC-Ou-B"><label for="tab-QC-Ou-B">Function-based</label><input type="radio" name="group-MFzm4" id="tab-_b-mhH9"><label for="tab-_b-mhH9">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { salary: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"numeric"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, numeric } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { salary: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">numeric</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isNumeric } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isNumeric</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">3000</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>integer</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>integer</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>integer</code></td><td><code>123</code></td><td>🟢</td></tr><tr><td><code>integer</code></td><td><code>3.14</code></td><td>🟢</td></tr><tr><td><code>integer</code></td><td><code>abc</code></td><td>🔴</td></tr></tbody></table><h2 id="required" tabindex="-1"><code>required</code> <a class="header-anchor" href="#required" aria-label="Permalink to "`required`""></a></h2><p>Checks if the value is provided.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-DogTK" id="tab-pe315ip" checked="checked"><label for="tab-pe315ip">Declarative</label><input type="radio" name="group-DogTK" id="tab-cwQ3KHI"><label for="tab-cwQ3KHI">Function-based</label><input type="radio" name="group-DogTK" id="tab-XiuieLm"><label for="tab-XiuieLm">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { salary: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"required"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, required } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { salary: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">required</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isRequired } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isRequired</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>required</code></td><td><code>john</code></td><td>🟢</td></tr><tr><td><code>required</code></td><td><code>123</code></td><td>🟢</td></tr><tr><td><code>required</code></td><td><code>1.23</code></td><td>🟢</td></tr><tr><td><code>required</code></td><td><code>{}</code></td><td>🟢</td></tr><tr><td><code>required</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>required</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>required</code></td><td><code>''</code></td><td>🔴</td></tr><tr><td><code>required</code></td><td><code>' '</code></td><td>🔴</td></tr></tbody></table><h2 id="size-value" tabindex="-1"><code>size:value</code> <a class="header-anchor" href="#size-value" aria-label="Permalink to "`size:value`""></a></h2><p>The field under validation must have a size matching the given value. For string data, value corresponds to the number of characters. For numeric data, value corresponds to a given integer value.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-FoV0A" id="tab-f6P5HIn" checked="checked"><label for="tab-f6P5HIn">Declarative</label><input type="radio" name="group-FoV0A" id="tab-thw_FvA"><label for="tab-thw_FvA">Function-based</label><input type="radio" name="group-FoV0A" id="tab-0Cpk4KJ"><label for="tab-0Cpk4KJ">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { password: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"size:12"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, size } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { password: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">size</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">12</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isSize } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isSize</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">12</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>size:3</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>size:3</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>size:3</code></td><td><code>abc</code></td><td>🟢</td></tr><tr><td><code>size:3</code></td><td><code>1</code></td><td>🟢</td></tr><tr><td><code>size:3</code></td><td><code>1.23</code></td><td>🟢</td></tr><tr><td><code>size:3</code></td><td><code>abcde</code></td><td>🔴</td></tr><tr><td><code>size:3</code></td><td><code>10</code></td><td>🔴</td></tr></tbody></table><h2 id="string" tabindex="-1"><code>string</code> <a class="header-anchor" href="#string" aria-label="Permalink to "`string`""></a></h2><p>The field under validation must be a string.</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-GspbV" id="tab-PJfYSTO" checked="checked"><label for="tab-PJfYSTO">Declarative</label><input type="radio" name="group-GspbV" id="tab--A2FGaI"><label for="tab--A2FGaI">Function-based</label><input type="radio" name="group-GspbV" id="tab-h68mRR6"><label for="tab-h68mRR6">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { content: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"string"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, string } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { content: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isString } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isString</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"your-data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>string</code></td><td><code>abc</code></td><td>🟢</td></tr><tr><td><code>string</code></td><td><code>''</code></td><td>🟢</td></tr><tr><td><code>string</code></td><td><code>' '</code></td><td>🟢</td></tr><tr><td><code>string</code></td><td><code>1</code></td><td>🔴</td></tr><tr><td><code>string</code></td><td><code>1.23</code></td><td>🔴</td></tr><tr><td><code>string</code></td><td><code>abcde</code></td><td>🔴</td></tr><tr><td><code>string</code></td><td><code>10</code></td><td>🔴</td></tr><tr><td><code>string</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>string</code></td><td><code>undefined</code></td><td>🔴</td></tr></tbody></table><h2 id="url" tabindex="-1"><code>url</code> <a class="header-anchor" href="#url" aria-label="Permalink to "`url`""></a></h2><p>Validate that an attribute has a valid URL format</p><div class="vp-code-group vp-adaptive-theme"><div class="tabs"><input type="radio" name="group-57xmU" id="tab-BeT36Gr" checked="checked"><label for="tab-BeT36Gr">Declarative</label><input type="radio" name="group-57xmU" id="tab-jYYPmH9"><label for="tab-jYYPmH9">Function-based</label><input type="radio" name="group-57xmU" id="tab-tU7DmUI"><label for="tab-tU7DmUI">Direct usage</label></div><div class="blocks"><div class="language-ts vp-adaptive-theme active"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { profile: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"url"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { validate, url } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">await</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> validate</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, { profile: [</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">url</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">()] });</span></span></code></pre></div><div class="language-ts vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { isUrl } </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "robust-validator"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// ...</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isUrl</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"https://axe-api-com"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span></code></pre></div></div></div><table><thead><tr><th>Rule</th><th>Value</th><th>Is valid?</th></tr></thead><tbody><tr><td><code>url</code></td><td><code>null</code></td><td>🔴</td></tr><tr><td><code>url</code></td><td><code>undefined</code></td><td>🔴</td></tr><tr><td><code>url</code></td><td><code>https://example.com</code></td><td>🟢</td></tr><tr><td><code>url</code></td><td><code>http://example.com</code></td><td>🟢</td></tr><tr><td><code>url</code></td><td><code>ftp://example.com</code></td><td>🟢</td></tr><tr><td><code>url</code></td><td><code>invalid-url</code></td><td>🔴</td></tr></tbody></table></div></div></main><footer class="VPDocFooter" data-v-a3c25e27 data-v-b4b63abf><!--[--><!--]--><div class="edit-info" data-v-b4b63abf><div class="edit-link" data-v-b4b63abf><a class="VPLink link vp-external-link-icon no-icon edit-link-button" href="https://github.com/axe-api/validator/edit/main/docs/rules.md" target="_blank" rel="noreferrer" data-v-b4b63abf><!--[--><svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 24 24" class="edit-link-icon" aria-label="edit icon" data-v-b4b63abf><path d="M18,23H4c-1.7,0-3-1.3-3-3V6c0-1.7,1.3-3,3-3h7c0.6,0,1,0.4,1,1s-0.4,1-1,1H4C3.4,5,3,5.4,3,6v14c0,0.6,0.4,1,1,1h14c0.6,0,1-0.4,1-1v-7c0-0.6,0.4-1,1-1s1,0.4,1,1v7C21,21.7,19.7,23,18,23z"></path><path d="M8,17c-0.3,0-0.5-0.1-0.7-0.3C7,16.5,6.9,16.1,7,15.8l1-4c0-0.2,0.1-0.3,0.3-0.5l9.5-9.5c1.2-1.2,3.2-1.2,4.4,0c1.2,1.2,1.2,3.2,0,4.4l-9.5,9.5c-0.1,0.1-0.3,0.2-0.5,0.3l-4,1C8.2,17,8.1,17,8,17zM9.9,12.5l-0.5,2.1l2.1-0.5l9.3-9.3c0.4-0.4,0.4-1.1,0-1.6c-0.4-0.4-1.2-0.4-1.6,0l0,0L9.9,12.5z M18.5,2.5L18.5,2.5L18.5,2.5z"></path></svg> Edit this page on GitHub<!--]--></a></div><!----></div><nav class="prev-next" data-v-b4b63abf><div class="pager" data-v-b4b63abf><a class="VPLink link pager-link prev" href="/terminology.html" data-v-b4b63abf><!--[--><span class="desc" data-v-b4b63abf>Previous page</span><span class="title" data-v-b4b63abf>Terminology</span><!--]--></a></div><div class="pager" data-v-b4b63abf><a class="VPLink link pager-link next" href="/i18n.html" data-v-b4b63abf><!--[--><span class="desc" data-v-b4b63abf>Next page</span><span class="title" data-v-b4b63abf>i18n</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><footer class="VPFooter has-sidebar" data-v-9d8abc1e data-v-566314d4><div class="container" data-v-566314d4><p class="message" data-v-566314d4>Released under the MIT License.</p><p class="copyright" data-v-566314d4>Copyright © 2020-present</p></div></footer><!--[--><!--]--></div></div>
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