From 1245bf5ac1dbf4792d226212aa452b94343d8947 Mon Sep 17 00:00:00 2001
From: Andrey Morozov <amje@yandex-team.ru>
Date: Tue, 31 Oct 2023 00:44:14 +0300
Subject: [PATCH] fix: throw on duplicates (#37)

---
 scripts/download.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/download.js b/scripts/download.js
index 9068356..9b6fc77 100644
--- a/scripts/download.js
+++ b/scripts/download.js
@@ -41,6 +41,7 @@ function createSvgBuilder(metadata) {
     return async function svgBuilder([{children, components: icons}]) {
         const iconSets = children.filter(({type}) => type === 'COMPONENT_SET');
         const iconsById = icons.reduce((acc, item) => ({...acc, [item.id]: item}), {});
+        const uniqueIcons = new Set();
 
         iconSets.sort((a, b) => (a.name > b.name ? 1 : -1));
 
@@ -49,6 +50,12 @@ function createSvgBuilder(metadata) {
                 throw new Error(`Icon has incorrect name: ${iconSet.name}`);
             }
 
+            if (uniqueIcons.has(iconSet.name)) {
+                throw new Error(`Icon has been already added: ${iconSet.name}`);
+            } else {
+                uniqueIcons.add(iconSet.name);
+            }
+
             for (const icon of iconSet.children) {
                 const props = parsePropertiesString(icon.name);
                 const svg = iconsById[icon.id].svg;