[1.x] Introduce clean-orphaned-assets binary (#251)

* Introduce script to purge orphaned assets

* Write to stderr

* Adopt "clean" naming

bin/clear-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 info = quiet ? (() => undefined) : console.log
+const error = quiet ? (() => undefined) : console.error
+
+/*
+ * Clean.
+ */
+
+const main = () => {
+    info(`Reading manifest [${manifestPath}].`)
+
+    const manifest = JSON.parse(readFileSync(manifestPath).toString())
+
+    const manifestKeys = Object.keys(manifest)
+
+    const isSsr = Array.isArray(manifest[manifestKeys[0]])
+
+    if (wantsSsr && ! isSsr) {
+        error('Did not expected SSR manifest.')
+
+        process.exit(1)
+    }
+
+    isSsr
+        ? info(`SSR manifest found.`)
+        : info(`Non-SSR manifest found.`)
+
+    const manifestAssets = isSsr
+        ? manifestKeys.flatMap(key => manifest[key])
+        : manifestKeys.map(key => manifest[key].file)
+
+    info(`Verify assets in [${assetsDirectory}].`)
+
+    const allAssets = readdirSync(assetsDirectory, { withFileTypes: true })
+
+    const orphanedAssets = allAssets.filter(file => file.isFile())
+        .filter(file => manifestAssets.findIndex(asset => asset.endsWith(`/${file.name}`)) === -1)
+
+    if (orphanedAssets.length === 0) {
+        info(`No ophaned assets found.`)
+    } else {
+        orphanedAssets.length === 1
+            ? info(`[${orphanedAssets.length}] orphaned asset found.`)
+            : info(`[${orphanedAssets.length}] orphaned assets found.`)
+
+        orphanedAssets.forEach(asset => {
+            const path = `${assetsDirectory}/${asset.name}`
+
+            dryRun
+                ? info(`Orphaned asset [${path}] would be removed.`)
+                : info(`Removing orphaned asset [${path}].`)
+
+            if (! dryRun) {
+                unlinkSync(path)
+            }
+        })
+    }
+}
+
+main()

package.json

@@ -30,6 +30,9 @@
         "/dist",
         "/inertia-helpers"
     ],
+    "bin": {
+        "clean-orphaned-assets": "bin/clean.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/",