subtle

lib

DOM

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
        - add a fallback 'resolve.fallback: { "crypto": require.resolve("crypto-browserify") }'
        - install 'crypto-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
        resolve.fallback: { "crypto": false }

js
const path = require('path')

module.exports = {
  entry: './src/index.ts',
  output: {
    filename: 'worker.js',
    path: path.join(__dirname, 'dist'),
  },
  devtool: 'cheap-module-source-map',
  mode: 'development',
  resolve: {
    extensions: ['.ts', '.tsx', '.js'],
     fallback: {
    "fs": false,
    "tls": false,
    "net": false,
    "path": false,
    "zlib": false,
    "http": false,
    "https": false,
    "stream": false,
    "crypto": false,
    // "crypto-browserify": require.resolve('crypto-browserify'), //if you want to use this module also don't forget npm i crypto-browserify 
  } 
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        loader: 'ts-loader',
        options: {
          // transpileOnly is useful to skip typescript checks occasionally:
          // transpileOnly: true,
        },
      },
    ],
  },
}

js
import * as path from 'path';

wrangler publish

ts
const enc = new TextEncoder();
let key: CryptoKey;

async function generateToken(message: string, separator: string, secret: string) {
  if(!key) {
    key = await crypto.subtle.importKey(
      "raw",
      enc.encode(secret),
      {
        name: "HMAC",
        hash: {
          name: "SHA-256"
        }
      },
      false,
      ["sign"]
    );
  }
  const timestamp = Math.floor(Date.now() / 1000).toString();
  return `${message}${separator}${timestamp}-${encodeURI(btoa(Array.from(new Uint8Array(crypto.subtle.sign(
    "HMAC",
    key,
    enc.encode(message + timestamp)
  ))).join((a, b) => a + String.fromCharCode(b), "")))}`;
}

Math.floor(Date.now() / 1000).toString();

enc