unjs
diff --git a/src/rspack/loaders/load.ts b/src/rspack/loaders/load.ts
@@ -1,7 +1,7 @@
 import type { LoaderContext } from '@rspack/core'
 import type { ResolvedUnpluginOptions } from '../../types'
 import { normalizeObjectHook } from '../../utils/filter'
-import { normalizeAbsolutePath } from '../../utils/webpack-like'
+import { normalizeAbsolutePath, unescapeResourcePath } from '../../utils/webpack-like'
 import { createBuildContext, createContext } from '../context'
 import { decodeVirtualModuleId, isVirtualModuleId } from '../utils'
 
@@ -16,6 +16,8 @@ export default async function load(this: LoaderContext, source: string, map: any
   if (isVirtualModuleId(id, plugin))
     id = decodeVirtualModuleId(id, plugin)
 
+  id = unescapeResourcePath(id)
+
   const context = createContext(this)
   const { handler } = normalizeObjectHook('load', plugin.load)
   try {

diff --git a/src/rspack/loaders/transform.ts b/src/rspack/loaders/transform.ts
@@ -1,6 +1,7 @@
 import type { LoaderContext } from '@rspack/core'
 import type { ResolvedUnpluginOptions } from '../../types'
 import { normalizeObjectHook } from '../../utils/filter'
+import { unescapeResourcePath } from '../../utils/webpack-like'
 import { createBuildContext, createContext } from '../context'
 
 export default async function transform(
@@ -13,10 +14,10 @@ export default async function transform(
   if (!plugin?.transform)
     return callback(null, source, map)
 
-  const id = this.resource
+  const id = unescapeResourcePath(this.resource)
   const context = createContext(this)
   const { handler, filter } = normalizeObjectHook('transform', plugin.transform)
-  if (!filter(this.resource, source))
+  if (!filter(id, source))
     return callback(null, source, map)
 
   try {

diff --git a/src/utils/webpack-like.ts b/src/utils/webpack-like.ts
@@ -49,3 +49,9 @@ export function normalizeAbsolutePath(path: string): string {
   else
     return path
 }
+
+export function unescapeResourcePath(path: string): string {
+  return path
+    .replace(/\0(.)/g, '$1')
+    .replace(/\u200B#/g, '#')
+}
diff --git a/src/webpack/loaders/load.ts b/src/webpack/loaders/load.ts
@@ -1,7 +1,7 @@
 import type { LoaderContext } from 'webpack'
 import type { ResolvedUnpluginOptions } from '../../types'
 import { normalizeObjectHook } from '../../utils/filter'
-import { normalizeAbsolutePath } from '../../utils/webpack-like'
+import { normalizeAbsolutePath, unescapeResourcePath } from '../../utils/webpack-like'
 import { createBuildContext, createContext } from '../context'
 
 export default async function load(this: LoaderContext<any>, source: string, map: any): Promise<void> {
@@ -15,6 +15,8 @@ export default async function load(this: LoaderContext<any>, source: string, map
   if (id.startsWith(plugin.__virtualModulePrefix))
     id = decodeURIComponent(id.slice(plugin.__virtualModulePrefix.length))
 
+  id = unescapeResourcePath(id)
+
   const context = createContext(this)
   const { handler } = normalizeObjectHook('load', plugin.load)
   const res = await handler.call(

diff --git a/src/webpack/loaders/transform.ts b/src/webpack/loaders/transform.ts
@@ -1,6 +1,7 @@
 import type { LoaderContext } from 'webpack'
 import type { ResolvedUnpluginOptions } from '../../types'
 import { normalizeObjectHook } from '../../utils/filter'
+import { unescapeResourcePath } from '../../utils/webpack-like'
 import { createBuildContext, createContext } from '../context'
 
 export default async function transform(this: LoaderContext<any>, source: string, map: any): Promise<void> {
@@ -10,9 +11,10 @@ export default async function transform(this: LoaderContext<any>, source: string
   if (!plugin?.transform)
     return callback(null, source, map)
 
+  const id = unescapeResourcePath(this.resource)
   const context = createContext(this)
   const { handler, filter } = normalizeObjectHook('transform', plugin.transform)
-  if (!filter(this.resource, source))
+  if (!filter(id, source))
     return callback(null, source, map)
 
   try {
@@ -26,7 +28,7 @@ export default async function transform(this: LoaderContext<any>, source: string
         },
       }, this._compiler!, this._compilation, this, map), context),
       source,
-      this.resource,
+      id,
     )
 
     if (res == null)

diff --git a/test/fixtures/hash-path/__test__/build.test.ts b/test/fixtures/hash-path/__test__/build.test.ts
@@ -0,0 +1,29 @@
+import fs from 'node:fs/promises'
+import { resolve } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { onlyBun } from '../../../utils'
+
+const r = (...args: string[]) => resolve(__dirname, '../dist', ...args)
+const expected = 'it is a msg -> through the load hook -> transform#hash'
+const cases: Array<[string, string]> = [
+  ['vite', 'vite/main.js.mjs'],
+  ['rollup', 'rollup/main.js'],
+  ['webpack', 'webpack/main.js'],
+  ['esbuild', 'esbuild/main.js'],
+  ['rspack', 'rspack/main.js'],
+  ['farm', 'farm/main.js'],
+]
+
+describe('hash-path hooks', () => {
+  for (const [name, file] of cases) {
+    it(name, async () => {
+      const content = await fs.readFile(r(file), 'utf-8')
+      expect(content).toContain(expected)
+    })
+  }
+
+  onlyBun('bun', async () => {
+    const content = await fs.readFile(r('bun/main.js'), 'utf-8')
+    expect(content).toContain(expected)
+  })
+})
diff --git a/test/fixtures/hash-path/bun.config.js b/test/fixtures/hash-path/bun.config.js
@@ -0,0 +1,8 @@
+const Bun = require('bun')
+const { bun } = require('./unplugin')
+
+await Bun.build({
+  entrypoints: ['./src/main.js'],
+  outdir: './dist/bun',
+  plugins: [bun({ msg: 'Bun' })],
+})
diff --git a/test/fixtures/hash-path/esbuild.config.js b/test/fixtures/hash-path/esbuild.config.js
@@ -0,0 +1,12 @@
+const { build } = require('esbuild')
+const { esbuild } = require('./unplugin')
+
+build({
+  entryPoints: ['src/main.js'],
+  bundle: true,
+  outdir: 'dist/esbuild',
+  sourcemap: true,
+  plugins: [
+    esbuild({ msg: 'Esbuild' }),
+  ],
+})
diff --git a/test/fixtures/hash-path/farm.config.js b/test/fixtures/hash-path/farm.config.js
@@ -0,0 +1,23 @@
+const { farm } = require('./unplugin')
+
+/**
+ * @type {import('@farmfe/core').UserConfig}
+ */
+module.exports = {
+  compilation: {
+    persistentCache: false,
+    input: {
+      index: './src/main.js',
+    },
+    presetEnv: false,
+    output: {
+      entryFilename: 'main.[ext]',
+      path: './dist/farm',
+      targetEnv: 'node',
+      format: 'cjs',
+    },
+  },
+  plugins: [
+    farm({ msg: 'Farm' }),
+  ],
+}
diff --git a/test/fixtures/hash-path/rollup.config.js b/test/fixtures/hash-path/rollup.config.js
@@ -0,0 +1,12 @@
+const { rollup } = require('./unplugin')
+
+export default {
+  input: './src/main.js',
+  output: {
+    dir: './dist/rollup',
+    sourcemap: true,
+  },
+  plugins: [
+    rollup({ msg: 'Rollup' }),
+  ],
+}
diff --git a/test/fixtures/hash-path/rspack.config.js b/test/fixtures/hash-path/rspack.config.js
@@ -0,0 +1,14 @@
+const { resolve } = require('node:path')
+const { rspack } = require('./unplugin')
+
+/** @type {import('@rspack/core').Configuration} */
+module.exports = {
+  mode: 'development',
+  entry: resolve(__dirname, 'src/main.js'),
+  output: {
+    path: resolve(__dirname, 'dist/rspack'),
+    filename: 'main.js',
+  },
+  plugins: [rspack({ msg: 'Rspack' })],
+  devtool: 'source-map',
+}
diff --git a/test/fixtures/hash-path/src/main.js b/test/fixtures/hash-path/src/main.js
@@ -0,0 +1,3 @@
+import msg from 'hash-msg#raw'
+
+console.log(msg)
diff --git a/test/fixtures/hash-path/src/msg#hash.js b/test/fixtures/hash-path/src/msg#hash.js
@@ -0,0 +1 @@
+export default 'it is a msg#hash'
diff --git a/test/fixtures/hash-path/unplugin.js b/test/fixtures/hash-path/unplugin.js
@@ -0,0 +1,73 @@
+const fs = require('node:fs')
+const { resolve } = require('node:path')
+const MagicString = require('magic-string')
+const { createUnplugin } = require('unplugin')
+
+const sourceId = 'hash-msg#raw'
+const resolvedId = resolve(__dirname, 'src/msg#hash.js')
+
+function assertUnescapedId(hook, id) {
+  if (id.includes('\0') || id.includes('\u200B#'))
+    throw new Error(`${hook} received escaped id: ${JSON.stringify(id)}`)
+}
+
+module.exports = createUnplugin(() => {
+  return {
+    name: 'hash-path-hooks',
+    resolveId(id) {
+      assertUnescapedId('resolveId', id)
+
+      if (id === sourceId)
+        return resolvedId
+
+      if (id.includes('hash-msg'))
+        throw new Error(`resolveId received unexpected id: ${JSON.stringify(id)}`)
+    },
+    loadInclude(id) {
+      assertUnescapedId('loadInclude', id)
+
+      // Return true so the test always exercises `load`.
+      return true
+    },
+    load(id) {
+      assertUnescapedId('load', id)
+
+      const code = fs.readFileSync(id, 'utf-8')
+      if (id !== resolvedId)
+        return code
+
+      const s = new MagicString(code)
+      const index = code.indexOf('msg#hash')
+      if (index === -1)
+        throw new Error(`load expected token "msg#hash" in ${JSON.stringify(id)}`)
+
+      s.overwrite(index, index + 'msg#hash'.length, 'msg -> through the load hook -> __unplugin__#hash')
+      return s.toString()
+    },
+    transformInclude(id) {
+      assertUnescapedId('transformInclude', id)
+
+      // Return true so the test always exercises `transform`.
+      return true
+    },
+    transform(code, id) {
+      assertUnescapedId('transform', id)
+      if (id !== resolvedId)
+        return code
+
+      const s = new MagicString(code)
+      const index = code.indexOf('__unplugin__')
+      if (index === -1)
+        throw new Error(`transform expected token "__unplugin__" in ${JSON.stringify(id)}`)
+
+      s.overwrite(index, index + '__unplugin__'.length, 'transform')
+      return {
+        code: s.toString(),
+        map: s.generateMap({
+          source: id,
+          includeContent: true,
+        }),
+      }
+    },
+  }
+})
diff --git a/test/fixtures/hash-path/vite.config.js b/test/fixtures/hash-path/vite.config.js
@@ -0,0 +1,18 @@
+const { resolve } = require('node:path')
+const { vite } = require('./unplugin')
+
+module.exports = {
+  root: __dirname,
+  plugins: [
+    vite({ msg: 'Vite' }),
+  ],
+  build: {
+    lib: {
+      entry: resolve(__dirname, 'src/main.js'),
+      name: 'main',
+      fileName: 'main.js',
+    },
+    outDir: 'dist/vite',
+    sourcemap: true,
+  },
+}
diff --git a/test/fixtures/hash-path/webpack.config.js b/test/fixtures/hash-path/webpack.config.js
@@ -0,0 +1,15 @@
+const { resolve } = require('node:path')
+const { webpack } = require('./unplugin')
+
+module.exports = {
+  mode: 'development',
+  entry: resolve(__dirname, 'src/main.js'),
+  output: {
+    path: resolve(__dirname, 'dist/webpack'),
+    filename: 'main.js',
+  },
+  plugins: [
+    webpack({ msg: 'Webpack' }),
+  ],
+  devtool: 'source-map',
+}
diff --git a/test/fixtures/load/unplugin.js b/test/fixtures/load/unplugin.js
@@ -3,6 +3,7 @@ const MagicString = require('magic-string')
 const { createUnplugin } = require('unplugin')
 
 const targetFileReg = /(?:\/|\\)msg\.js$/
+
 module.exports = createUnplugin((options) => {
   return {
     name: 'load-called-before-transform',
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,3 @@
		import msg from 'hash-msg#raw'

		console.log(msg)