feat: create unenv-preset package (#96)

* feat: create unenv-preset package

* fix: update polyfill paths and change global polyfills in unenv-preset

* fix: add crypto-browserify as a dependency in unenv-preset

---------

Co-authored-by: José Filho <jc.bsfilho@gmail.com>

package.json

@@ -74,7 +74,8 @@
     "README.md",
     "package.json",
     "packages/**/dist/**/*",
-    "cli/**/*"
+    "cli/**/*",
+    "packages/unenv-preset/src/polyfills/*"
   ],
   "exports": {
     ".": {
@@ -87,6 +88,11 @@
       "import": "./packages/presets/dist/index.mjs",
       "types": "./packages/presets/dist/index.d.ts"
     },
+    "./unenv-preset": {
+      "require": "./packages/unenv-preset/dist/index.js",
+      "import": "./packages/unenv-preset/dist/index.mjs",
+      "types": "./packages/unenv-preset/dist/index.d.ts"
+    },
     "./ai": {
       "require": "./packages/ai/dist/index.js",
       "import": "./packages/ai/dist/index.mjs",
@@ -161,6 +167,9 @@
       "presets": [
         "./packages/presets/dist/index.d.ts"
       ],
+      "unenv-preset": [
+        "./packages/unenv-preset/dist/index.d.ts"
+      ],
       "application": [
         "./packages/application/dist/index.d.ts"
       ],

packages/unenv-preset/.gitignore

@@ -0,0 +1,2 @@
+node_modules
+dist

packages/unenv-preset/jest.config.js

@@ -0,0 +1,10 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  displayName: 'Unenv Preset',
+  preset: 'ts-jest',
+  transform: {
+    '^.+\\.(t|j)s?$': '@swc/jest',
+  },
+  testPathIgnorePatterns: ['/node_modules/', '/dist/'],
+  testEnvironment: 'node',
+};

packages/unenv-preset/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "@lib/unenv-preset",
+  "version": "1.0.0",
+  "description": "Azion Unenv preset.",
+  "main": "./dist/index.js",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.ts",
+  "scripts": {
+    "compile": "tsup --config ../../tsup.config.json",
+    "lint": "eslint .",
+    "lint:fix": "eslint --fix .",
+    "prettier": "prettier --write .",
+    "test": "jest --clearCache && jest -c jest.config.js .",
+    "test:watch": "jest -c jest.config.js . --watch",
+    "test:coverage": "jest --clearCache && jest -c jest.config.js . --coverage"
+  },
+  "author": "aziontech",
+  "license": "MIT",
+  "files": [
+    "dist",
+    "package.json",
+    "src/polyfills/*"
+  ],
+  "dependencies": {
+    "crypto-browserify": "^3.12.1"
+  }
+}

packages/unenv-preset/src/index.ts

@@ -0,0 +1,43 @@
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const getAbsolutePath = () => path.resolve(__dirname, '../', 'src');
+
+const nextNodePresetPath = `${getAbsolutePath()}/polyfills/node/frameworks/next`;
+const polyfillsPath = `${getAbsolutePath()}/polyfills`;
+
+export default {
+  inject: {
+    __dirname: `${polyfillsPath}/node/globals/path-dirname.js`,
+    __filename: `${polyfillsPath}/node/globals/path-filename.js`,
+    process: `${polyfillsPath}/node/globals/process.cjs`,
+  },
+  alias: {
+    'azion/utils': 'azion/utils',
+    '@fastly/http-compute-js': '@fastly/http-compute-js',
+    'next/dist/compiled/etag': `${nextNodePresetPath}/custom-server/12.3.x/util/etag.js`,
+    accepts: 'accepts',
+    crypto: `${polyfillsPath}/node/crypto.js`,
+    events: 'events/events.js',
+    http: 'stream-http',
+    module: `${polyfillsPath}/node/module.js`,
+    stream: 'stream-browserify/',
+    string_decoder: 'string_decoder/lib/string_decoder.js',
+    url: 'url/url.js',
+    util: 'util/util.js',
+    timers: 'timers-browserify/',
+    inherits: 'inherits/inherits_browser.js',
+    vm: 'vm-browserify/',
+    zlib: 'browserify-zlib',
+  },
+  external: ['node:async_hooks', 'node:fs/promises'],
+  polyfill: [
+    'aziondev:async_hooks:/async-hooks/async-hooks.polyfills.js',
+    'aziondev:fs:/fs/fs.polyfills.js',
+    'aziondev:fs/promises:/fs/promises/promises.polyfills.js',
+    `azionprd:fs:/fs.js`,
+  ],
+};

packages/unenv-preset/src/polyfills/node/crypto.js

@@ -0,0 +1,70 @@
+/* eslint-disable */
+import crypto from 'crypto-browserify';
+
+crypto.webcrypto = globalThis.crypto;
+export default crypto;
+export var { Cipher } = crypto;
+export var { Cipheriv } = crypto;
+export var { Decipher } = crypto;
+export var { Decipheriv } = crypto;
+export var { DiffieHellman } = crypto;
+export var { DiffieHellmanGroup } = crypto;
+export var { Hash } = crypto;
+export var { Hmac } = crypto;
+export var { Sign } = crypto;
+export var { Verify } = crypto;
+export var { constants } = crypto;
+export var { createCipher } = crypto;
+export var { createCipheriv } = crypto;
+export var { createCredentials } = crypto;
+export var { createDecipher } = crypto;
+export var { createDecipheriv } = crypto;
+export var { createDiffieHellman } = crypto;
+export var { createDiffieHellmanGroup } = crypto;
+export var { createECDH } = crypto;
+export var { createHash } = crypto;
+export var { createHmac } = crypto;
+export var { createSign } = crypto;
+export var { createVerify } = crypto;
+export var { getCiphers } = crypto;
+export var { getDiffieHellman } = crypto;
+export var { getHashes } = crypto;
+export var { listCiphers } = crypto;
+export var { pbkdf2 } = crypto;
+export var { pbkdf2Sync } = crypto;
+export var { privateDecrypt } = crypto;
+export var { privateEncrypt } = crypto;
+export var { prng } = crypto;
+export var { pseudoRandomBytes } = crypto;
+export var { publicDecrypt } = crypto;
+export var { publicEncrypt } = crypto;
+export var { randomBytes } = crypto;
+export var { randomFill } = crypto;
+export var { randomFillSync } = crypto;
+export var { rng } = crypto;
+export var { webcrypto } = crypto;
+
+export var getRandomValues = function (abv) {
+  let l = abv.length;
+  while (l--) {
+    const bytes = randomBytes(7);
+    let randomFloat = (bytes[0] % 32) / 32;
+
+    for (let i = 0; i < bytes.length; i++) {
+      const byte = bytes[i];
+      randomFloat = (randomFloat + byte) / 256;
+    }
+
+    abv[l] = Math.floor(randomFloat * 256);
+  }
+  return abv;
+};
+
+export var randomUUID = function () {
+  return '10000000-1000-4000-8000-100000000000'.replace(/[018]/g, function (c) {
+    return (
+      c ^
+      (getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))
+    ).toString(16);
+  });
+};

packages/unenv-preset/src/polyfills/node/frameworks/next/custom-server/12.3.x/util/etag.js

@@ -0,0 +1,33 @@
+/*
+ * Copyright Azion
+ * Licensed under the MIT license. See LICENSE file for details.
+ *
+ * Portions of this file Copyright Fastly, Inc, licensed under the MIT license. See LICENSE file for details.
+ */
+
+import { Buffer } from 'buffer';
+import crypto from 'crypto';
+
+/**
+ * Generates an etag string based on a payload.
+ * (An adaptation for Compute@Edge of function in Next.js of the same name,
+ * found at next/server/api-utils/web.ts)
+ * @param {string} payload data to generate etag
+ * @returns {string} the generated etag
+ */
+export default function generateETag(payload) {
+  if (payload.length === 0) {
+    // fast-path empty
+    return '"0-2jmj7l5rSw0yVb/vlWAYkK/YBwk"';
+  }
+
+  // compute hash of entity
+  // Do this without using crypto.subtle, as the crypto
+  // polyfill doesn't support it.
+  const hash = crypto.createHash('sha1').update(payload, 'utf8').digest('base64').substring(0, 27);
+
+  // compute length of entity
+  const len = Buffer.byteLength(payload);
+
+  return `"${len.toString(16)}-${hash}"`;
+}