From f7a34a5d55865f391ca7fdfab1394330f48a9030 Mon Sep 17 00:00:00 2001
From: Tim MacDonald <hello@timacdonald.me>
Date: Sat, 7 Oct 2023 17:08:32 +1100
Subject: [PATCH] Introduce script to purge orphaned assets

---
 bin/purge-orphaned-assets.js | 91 ++++++++++++++++++++++++++++++++++++
 package.json                 |  4 ++
 2 files changed, 95 insertions(+)
 create mode 100755 bin/purge-orphaned-assets.js

diff --git a/bin/purge-orphaned-assets.js b/bin/purge-orphaned-assets.js
new file mode 100755
index 0000000..6a3364e
--- /dev/null
+++ b/bin/purge-orphaned-assets.js
@@ -0,0 +1,91 @@
+#!/usr/bin/env node
+
+import { readFileSync, readdirSync, unlinkSync } from 'fs'
+import { dirname } from 'path'
+
+/*
+ * Argv helpers.
+ */
+
+const argument = (name, fallback) => {
+    const index = process.argv.findIndex(argument => argument.startsWith(`--${name}=`))
+
+    return index === -1
+        ? fallback()
+        : process.argv[index].substring(`--${name}=`.length)
+}
+
+const option = (name) => process.argv.includes(`--${name}`)
+
+/*
+ * Configuration.
+ */
+
+const dryRun = option(`dry-run`)
+const quiet = option(`quiet`)
+const wantsSsr = option('ssr')
+const manifestPath = argument(`manifest`, () => wantsSsr ? `./bootstrap/ssr/ssr-manifest.json` : `./public/build/manifest.json`)
+const assetsDirectory = argument(`assets`, () => `${dirname(manifestPath)}/assets`)
+
+/*
+ * Helpers.
+ */
+
+const write = quiet ? (() => undefined) : console.log
+
+/*
+ * Clean.
+ */
+
+const main = () => {
+    write(`Reading manifest [${manifestPath}].`)
+
+    const manifest = JSON.parse(readFileSync(manifestPath).toString())
+
+    const manifestKeys = Object.keys(manifest)
+
+    const isSsr = Array.isArray(manifest[manifestKeys[0]])
+
+    if (wantsSsr && ! isSsr) {
+        write('Did not find an SSR manifest.')
+
+        process.exit(1)
+    }
+
+    isSsr
+        ? write(`SSR manifest found.`)
+        : write(`Non-SSR manifest found.`)
+
+    const manifestAssets = isSsr
+        ? manifestKeys.flatMap(key => manifest[key])
+        : manifestKeys.map(key => manifest[key].file)
+
+    write(`Verify assets in [${assetsDirectory}].`)
+
+    const allAssets = readdirSync(assetsDirectory, { withFileTypes: true })
+
+    const orphanedAssets = allAssets.filter(file => file.isFile())
+        .filter(file => manifestAssets.findIndex(asset => asset.endsWith(`/${file.name}`)) === -1)
+
+    if (orphanedAssets.length === 0) {
+        write(`No ophaned assets found.`)
+    } else {
+        orphanedAssets.length === 1
+            ? write(`[${orphanedAssets.length}] orphaned asset found.`)
+            : write(`[${orphanedAssets.length}] orphaned assets found.`)
+
+        orphanedAssets.forEach(asset => {
+            const path = `${assetsDirectory}/${asset.name}`
+
+            dryRun
+                ? write(`Orphaned asset [${path}] would be removed.`)
+                : write(`Removing orphaned asset [${path}].`)
+
+            if (! dryRun) {
+                unlinkSync(path)
+            }
+        })
+    }
+}
+
+main()
diff --git a/package.json b/package.json
index 30a103a..ec198df 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,6 @@
 {
     "name": "laravel-vite-plugin",
+    "type": "module",
     "version": "0.8.1",
     "description": "Laravel plugin for Vite.",
     "keywords": [
@@ -30,6 +31,9 @@
         "/dist",
         "/inertia-helpers"
     ],
+    "bin": {
+        "purge-orphaned-assets": "bin/purge-orphaned-assets.js"
+    },
     "scripts": {
         "build": "npm run build-plugin && npm run build-inertia-helpers",
         "build-plugin": "rm -rf dist && npm run build-plugin-types && npm run build-plugin-esm && cp src/dev-server-index.html dist/",