draft: Cloudflare works ! 🎉

cf/polyfills.js

@@ -13,61 +13,69 @@ const IPv4Reg = new RegExp(`^${v4Str}$`)
 const v6Seg = '(?:[0-9a-fA-F]{1,4})'
 const IPv6Reg = new RegExp(
   '^(' +
-    `(?:${v6Seg}:){7}(?:${v6Seg}|:)|` +
-    `(?:${v6Seg}:){6}(?:${v4Str}|:${v6Seg}|:)|` +
-    `(?:${v6Seg}:){5}(?::${v4Str}|(:${v6Seg}){1,2}|:)|` +
-    `(?:${v6Seg}:){4}(?:(:${v6Seg}){0,1}:${v4Str}|(:${v6Seg}){1,3}|:)|` +
-    `(?:${v6Seg}:){3}(?:(:${v6Seg}){0,2}:${v4Str}|(:${v6Seg}){1,4}|:)|` +
-    `(?:${v6Seg}:){2}(?:(:${v6Seg}){0,3}:${v4Str}|(:${v6Seg}){1,5}|:)|` +
-    `(?:${v6Seg}:){1}(?:(:${v6Seg}){0,4}:${v4Str}|(:${v6Seg}){1,6}|:)|` +
-    `(?::((?::${v6Seg}){0,5}:${v4Str}|(?::${v6Seg}){1,7}|:))` +
-    ')(%[0-9a-zA-Z-.:]{1,})?$'
+  `(?:${v6Seg}:){7}(?:${v6Seg}|:)|` +
+  `(?:${v6Seg}:){6}(?:${v4Str}|:${v6Seg}|:)|` +
+  `(?:${v6Seg}:){5}(?::${v4Str}|(:${v6Seg}){1,2}|:)|` +
+  `(?:${v6Seg}:){4}(?:(:${v6Seg}){0,1}:${v4Str}|(:${v6Seg}){1,3}|:)|` +
+  `(?:${v6Seg}:){3}(?:(:${v6Seg}){0,2}:${v4Str}|(:${v6Seg}){1,4}|:)|` +
+  `(?:${v6Seg}:){2}(?:(:${v6Seg}){0,3}:${v4Str}|(:${v6Seg}){1,5}|:)|` +
+  `(?:${v6Seg}:){1}(?:(:${v6Seg}){0,4}:${v4Str}|(:${v6Seg}){1,6}|:)|` +
+  `(?::((?::${v6Seg}){0,5}:${v4Str}|(?::${v6Seg}){1,7}|:))` +
+  ')(%[0-9a-zA-Z-.:]{1,})?$'
 )
 
 const textEncoder = new TextEncoder()
 export const crypto = {
-  randomBytes: l => Crypto.getRandomValues(Buffer.alloc(l)),
-  pbkdf2Sync: async(password, salt, iterations, keylen) => Crypto.subtle.deriveBits(
-    {
-      name: 'PBKDF2',
-      hash: 'SHA-256',
-      salt,
-      iterations
-    },
-    await Crypto.subtle.importKey(
-      'raw',
-      textEncoder.encode(password),
-      'PBKDF2',
-      false,
+  randomBytes: (l) => Crypto.getRandomValues(Buffer.alloc(l)),
+  pbkdf2Sync: async (password, salt, iterations, keylen) =>
+    Crypto.subtle.deriveBits(
+      {
+        name: 'PBKDF2',
+        hash: 'SHA-256',
+        salt,
+        iterations
+      },
+      await Crypto.subtle.importKey(
+        'raw',
+        textEncoder.encode(password),
+        'PBKDF2',
+        false,
+        ['deriveBits']
+      ),
+      keylen * 8,
       ['deriveBits']
     ),
-    keylen * 8,
-    ['deriveBits']
-  ),
   createHash: (type) => ({
     update: (x) => ({
       digest: () => {
-        return type === 'sha256'
-          ? Crypto.subtle.digest('SHA-256', x)
-          : Crypto.subtle.digest('MD5', x)
+        if (type !== 'sha256')
+          throw Error('createHash only supports sha256 on cloudflare.')
+        if (!(x instanceof Uint8Array))
+          x = textEncoder.encode(x)
+        return Crypto.subtle.digest('SHA-256', x)
       }
     })
   }),
   createHmac: (type, key) => ({
-    update: x => ({
-      digest: async() => Buffer.from(await Crypto.subtle.sign(
-        'HMAC',
-        await Crypto.subtle.importKey('raw', key, { name: 'HMAC', hash: 'SHA-256' }, false, ['sign']),
-        textEncoder.encode(x)
-      ))
+    update: (x) => ({
+      digest: async () =>
+        Buffer.from(
+          await Crypto.subtle.sign(
+            'HMAC',
+            await Crypto.subtle.importKey(
+              'raw',
+              key,
+              { name: 'HMAC', hash: 'SHA-256' },
+              false,
+              ['sign']
+            ),
+            textEncoder.encode(x)
+          )
+        )
     })
   })
 }
 
-export const process = {
-  env: {}
-}
-
 export const os = {
   userInfo() {
     return { username: 'postgres' }
@@ -81,19 +89,23 @@ export const fs = {
 }
 
 export const net = {
-  isIP: x => RegExp.prototype.test.call(IPv4Reg, x) ? 4 : RegExp.prototype.test.call(IPv6Reg, x) ? 6 : 0,
+  isIP: (x) =>
+    RegExp.prototype.test.call(IPv4Reg, x)
+      ? 4
+      : RegExp.prototype.test.call(IPv6Reg, x)
+        ? 6
+        : 0,
   Socket
 }
 
 export { setImmediate, clearImmediate }
 
 export const tls = {
-  connect(x) {
-    const tcp = x.socket
+  connect({ socket: tcp, servername }) {
     tcp.writer.releaseLock()
     tcp.reader.releaseLock()
     tcp.readyState = 'upgrading'
-    tcp.raw = tcp.raw.startTls({ servername: x.servername })
+    tcp.raw = tcp.raw.startTls({ servername })
     tcp.raw.closed.then(
       () => tcp.emit('close'),
       (e) => tcp.emit('error', e)
@@ -133,7 +145,7 @@ function Socket() {
         () => {
           tcp.readyState !== 'upgrade'
             ? close()
-            : (tcp.readyState = 'open', tcp.emit('secureConnect'))
+            : ((tcp.readyState = 'open'), tcp.emit('secureConnect'))
         },
         (e) => tcp.emit('error', e)
       )
@@ -151,8 +163,7 @@ function Socket() {
   }
 
   function close() {
-    if (tcp.readyState === 'closed')
-      return
+    if (tcp.readyState === 'closed') return
 
     tcp.readyState = 'closed'
     tcp.emit('close')
@@ -164,9 +175,7 @@ function Socket() {
   }
 
   function end(data) {
-    return data
-      ? tcp.write(data, () => tcp.raw.close())
-      : tcp.raw.close()
+    return data ? tcp.write(data, () => tcp.raw.close()) : tcp.raw.close()
   }
 
   function destroy() {
@@ -178,7 +187,7 @@ function Socket() {
     try {
       let done
         , value
-      while (({ done, value } = await tcp.reader.read(), !done))
+      while ((({ done, value } = await tcp.reader.read()), !done))
         tcp.emit('data', Buffer.from(value))
     } catch (err) {
       error(err)
@@ -211,3 +220,31 @@ function setImmediate(fn) {
 function clearImmediate(id) {
   tasks.delete(id)
 }
+
+const nowOffset = Date.now()
+const now = () => Date.now() - nowOffset
+const hrtime = (previousTimestamp) => {
+  const baseNow = Math.floor((Date.now() - now()) * 1e-3)
+  const clocktime = now() * 1e-3
+  let seconds = Math.floor(clocktime) + baseNow
+  let nanoseconds = Math.floor((clocktime % 1) * 1e9)
+
+  if (previousTimestamp) {
+    seconds = seconds - previousTimestamp[0]
+    nanoseconds = nanoseconds - previousTimestamp[1]
+    if (nanoseconds < 0) {
+      seconds--
+      nanoseconds += 1e9
+    }
+  }
+  return [seconds, nanoseconds]
+}
+hrtime.bigint = () => {
+  const time = hrtime()
+  return BigInt(`${time[0]}${time[1]}`)
+}
+
+export const process = {
+  env: {},
+  hrtime
+}

cf/src/connection.js

@@ -1,9 +1,5 @@
-import { process } from '../polyfills.js'
 import { Buffer } from 'node:buffer'
-import { setImmediate, clearImmediate } from '../polyfills.js'
-import { net } from '../polyfills.js'
-import { tls } from '../polyfills.js'
-import { crypto } from '../polyfills.js'
+import { setImmediate, clearImmediate, process, net, tls, crypto } from '../polyfills.js'
 import Stream from 'node:stream'
 
 import { stringify, handleValue, arrayParser, arraySerializer } from './types.js'

cf/src/index.js

@@ -1,6 +1,4 @@
-import { process } from '../polyfills.js'
-import { os } from '../polyfills.js'
-import { fs } from '../polyfills.js'
+import { process, os, fs } from '../polyfills.js'
 
 import {
   mergeUserTypes,

cf/test-pages.js

@@ -0,0 +1,22 @@
+// Add your database url and run this file with
+// npx wrangler pages dev ./cf --script-path test-pages.js  --compatibility-date=2023-06-20 --log-level=debug --compatibility-flag=nodejs_compat
+import postgres from './src/index'
+const DATABASE_URL = ''
+
+export default {
+    async fetch(request, env) {
+        const url = new URL(request.url);
+        if (url.pathname.includes('/favicon.ico')) {
+            return new Response('')
+        }
+        if (url.pathname.startsWith('/')) {
+            const sql = postgres(DATABASE_URL)
+            const rows = await sql`SELECT table_name FROM information_schema.columns`
+            return new Response(rows.map((e) => e.table_name).join('\n'))
+        }
+
+        // Otherwise, serve the static assets.
+        // Without this, the Worker will error and no assets will be served.
+        return env.ASSETS.fetch(request)
+    },
+}

cf/test-worker.js

@@ -0,0 +1,15 @@
+// Add your database url and run this file with
+// npx wrangler dev ./cf/test-worker.js --compatibility-date=2023-06-20 --log-level=debug --compatibility-flag=nodejs_compat
+import postgres from './src/index'
+const DATABASE_URL = ''
+
+export default {
+    async fetch(request, env, ctx) {
+        if (request.url.includes('/favicon.ico'))
+            return new Response()
+
+        const sql = postgres(DATABASE_URL)
+        const rows = await sql`SELECT table_name FROM information_schema.columns`
+        return new Response(rows.map((e) => e.table_name).join('\n'))
+    },
+}

package.json

@@ -56,4 +56,4 @@
     "pg",
     "database"
   ]
-}
+}

transpile.cf.js

@@ -1,38 +1,47 @@
 import fs from 'fs'
 import path from 'path'
 
-const empty = x => fs.readdirSync(x).forEach(f => fs.unlinkSync(path.join(x, f)))
-    , ensureEmpty = x => !fs.existsSync(x) ? fs.mkdirSync(x) : empty(x)
+const empty = (x) =>
+      fs.readdirSync(x).forEach((f) => fs.unlinkSync(path.join(x, f)))
+    , ensureEmpty = (x) => (!fs.existsSync(x) ? fs.mkdirSync(x) : empty(x))
     , root = 'cf'
     , src = path.join(root, 'src')
 
 ensureEmpty(src)
 
-fs.readdirSync('src').forEach(name =>
+fs.readdirSync('src').forEach((name) =>
   fs.writeFileSync(
     path.join(src, name),
     transpile(fs.readFileSync(path.join('src', name), 'utf8'), name, 'src')
   )
 )
 
 function transpile(x) {
-  const timers = x.includes('setImmediate')
-    ? 'import { setImmediate, clearImmediate } from \'../polyfills.js\'\n'
-    : ''
-
-  const process = x.includes('process.')
-    ? 'import { process } from \'../polyfills.js\'\n'
-    : ''
+  const polyfills = [
+    x.includes('setImmediate') ? ['setImmediate', 'clearImmediate'] : undefined,
+    x.includes('process') ? ['process'] : undefined,
+    x.includes('import net from \'net\'') ? ['net'] : undefined,
+    x.includes('import tls from \'tls\'') ? ['tls'] : undefined,
+    x.includes('import crypto from \'crypto\'') ? ['crypto'] : undefined,
+    x.includes('import os from \'os\'') ? ['os'] : undefined,
+    x.includes('import fs from \'fs\'') ? ['fs'] : undefined
+  ].filter(Boolean).flat()
 
   const buffer = x.includes('Buffer')
     ? 'import { Buffer } from \'node:buffer\'\n'
     : ''
 
-  return process + buffer + timers + x
-    .replace('import net from \'net\'', 'import { net } from \'../polyfills.js\'')
-    .replace('import tls from \'tls\'', 'import { tls } from \'../polyfills.js\'')
-    .replace('import crypto from \'crypto\'', 'import { crypto } from \'../polyfills.js\'')
-    .replace('import os from \'os\'', 'import { os } from \'../polyfills.js\'')
-    .replace('import fs from \'fs\'', 'import { fs } from \'../polyfills.js\'')
-    .replace(/ from '([a-z_]+)'/g, ' from \'node:$1\'')
+  return (
+    buffer +
+    // bulk add polyfills
+    (polyfills.length ? `import { ${polyfills.join(', ')} } from '../polyfills.js'\n` : '') +
+    x
+      // cleanup polyfills
+      .replace('import crypto from \'crypto\'\n', '')
+      .replace('import net from \'net\'\n', '')
+      .replace('import tls from \'tls\'\n', '')
+      .replace('import os from \'os\'\n', '')
+      .replace('import fs from \'fs\'\n', '')
+      .replace(/ from '([a-z_]+)'/g, ' from \'node:$1\'')
+  )
 }