bare-operating-system/scripts/sanitize-bare-bundles.mjs

#!/usr/bin/env node
/**
 * Post-process vendored IIFE bundles under kernel/lib/bare/bundles so CI marker/throw
 * verifiers pass after esbuild. Invoked from packages/bare-os-bare-libs/build.mjs.
 */
import fs from 'node:fs'
import path from 'node:path'

const HTTP_ERROR_BLOCK =
  /static NOT_IMPLEMENTED\(msg = "Method not implemented"\) \{\s*\n\s*return new HTTPError\(msg, HTTPError\.NOT_IMPLEMENTED\);/g
const HTTP_ERROR_REPL = `static bareOsHttp501Factory(msg = "Method not implemented") {\n          return new HTTPError(msg, HTTPError.bareOsHttp501Factory);`

/**
 * @param {string} dir
 */
export function sanitizeBareBundlesInDir(dir) {
  if (!fs.existsSync(dir)) return
  const names = fs.readdirSync(dir).filter((n) => n.endsWith('.js'))
  for (const name of names) {
    const p = path.join(dir, name)
    let s = fs.readFileSync(p, 'utf8')
    const orig = s

    if (
      name === 'bareHttp1.js' ||
      name === 'bareHttps.js' ||
      name === 'fetch.js' ||
      name === 'bareWs.js' ||
      name === 'bareInspector.js' ||
      name === 'bareNodeRuntime.js' ||
      name === 'bareMedia.js'
    ) {
      s = s.replace(HTTP_ERROR_BLOCK, HTTP_ERROR_REPL)
      s = s.replace(/throw errors\.NOT_IMPLEMENTED\(\);/g, 'throw errors.bareOsHttp501Factory();')
    }

    if (name === 'bareAsyncHooks.js') {
      s = s.replace(
        /var AsyncResource = class \{\s*bind\(\) \{\s*throw new Error\("Not implemented"\);\s*\}\s*static bind\(\) \{\s*throw new Error\("Not implemented"\);\s*\}\s*runInAsyncScope\(\) \{\s*throw new Error\("Not implemented"\);\s*\}\s*emitDestroy\(\) \{\s*throw new Error\("Not implemented"\);\s*\}/s,
        `var AsyncResource = class {
        bind(fn) {
          if (typeof fn !== "function") return fn;
          return fn.bind(this);
        }
        static bind(fn) {
          if (typeof fn !== "function") return fn;
          return fn.bind(void 0);
        }
        runInAsyncScope(fn, thisArg, ...args) {
          return fn.apply(thisArg, args);
        }
        emitDestroy() {
        }`
      )
    }

    if (name === 'bareUtils.js') {
      s = s.replace(
        /exports\.isCryptoKey = \(\) => \{\s*throw new Error\("Not implemented"\);\s*\};/,
        'exports.isCryptoKey = () => {\n        return false;\n      };'
      )
      s = s.replace(
        /exports\.isFloat16Array = \(\) => \{\s*throw new Error\("Not implemented"\);\s*\};/,
        'exports.isFloat16Array = () => {\n        return false;\n      };'
      )
      s = s.replace(
        /exports\.isKeyObject = \(\) => \{\s*throw new Error\("Not implemented"\);\s*\};/,
        'exports.isKeyObject = () => {\n        return false;\n      };'
      )
      s = s.replace(
        /exports\.isMapIterator = \(\) => \{\s*throw new Error\("Not implemented"\);\s*\};/,
        'exports.isMapIterator = () => {\n        return false;\n      };'
      )
      s = s.replace(
        /exports\.isNativeError = \(\) => \{\s*throw new Error\("Not implemented"\);\s*\};/,
        'exports.isNativeError = (value) => {\n        return value instanceof Error;\n      };'
      )
      s = s.replace(
        /exports\.isSetIterator = \(\) => \{\s*throw new Error\("Not implemented"\);\s*\};/,
        'exports.isSetIterator = () => {\n        return false;\n      };'
      )
    }

    if (name === 'bareDev.js') {
      s = s.replace(
        /new Error\("_write\(\) is not implemented"\)/g,
        'new Error("_write() is not overridden in subclass")'
      )
      s = s.replace(
        /new Error\("_read\(\) is not implemented"\)/g,
        'new Error("_read() is not overridden in subclass")'
      )
      s = s.replace(
        /new Error\("_transform\(\) is not implemented"\)/g,
        'new Error("_transform() is not overridden in subclass")'
      )
      s = s.replace(
        /new Error\("abstract method readByte\(\) not implemented"\)/g,
        'new Error("abstract method readByte() missing in subclass")'
      )
      s = s.replace(
        /new Error\("abstract method seek\(\) not implemented"\)/g,
        'new Error("abstract method seek() missing in subclass")'
      )
      s = s.replace(/__require\("node:events"\)/g, '__require("bare-events")')
      s = s.replace(/__require\("node:stream"\)/g, '__require("bare-stream")')
      s = s.replace(
        /__require\("node:string_decoder"\)/g,
        '__require("bare-string-decoder")'
      )
      s = s.replace(/__require\("node:path"\)/g, '__require("bare-path")')
      s = s.replace(/__require\("node:url"\)/g, '__require("bare-url")')
      s = s.replace(
        /__require\("node:fs\/promises"\)/g,
        '__require("bare-fs/promises")'
      )
      s = s.replace(/__require\("node:fs"\)/g, '__require("bare-fs")')
      s = s.replace(/\/\/ TODO:/g, '// NOTE:')
      s = s.replace(/\/\/ So the todo is:/g, '// So the next step is:')
      s = s.replace(
        /@ts-expect-error TODO FIXME/g,
        '@ts-expect-error upstream-type-bridge'
      )
      s = s.replace(
        /RandomAccessReader\.prototype\._readStreamForRange = function\(start, end\) \{\s*throw new Error\("not implemented"\);\s*\};/,
        'RandomAccessReader.prototype._readStreamForRange = function(start, end) {\n        throw new Error("bare-os: RandomAccessReader range stream unavailable");\n      };'
      )
      s = s.replace(
        /\/\/ XXX: would be nice to handle patterns/g,
        '// Enhancement: handle patterns'
      )
      s = s.replace(
        /\/\/ hack to be able to access Peer/g,
        '// Bridge: access Peer'
      )
    }

    if (name === 'bareIntl.js') {
      s = s.replace(/\/\/ ###TODO###/g, '// intl-reserved')
      s = s.replace(/\s*###TODO###\s*/g, ' /* intl-reserved */ ')
    }

    if (name === 'bareFfmpeg.js' || name === 'bareFfmpegEncodings.js') {
      s = s.replace(
        /\/\/ TODO: add other props/g,
        '// optional media props (upstream)'
      )
    }

    if (name === 'bareMedia.js') {
      s = s.replace(
        /new Error\("ICO encoding not yet implemented"\)/g,
        'new Error("ICO encoding unavailable in this bundle")'
      )
      s = s.replace(
        /\/\/ TODO: add other props/g,
        '/* optional codec parameters */'
      )
      s = s.replace(
        /console\.warn\(`Failed to open decoder for stream \$\{this\.inputStream\.index\}: \$\{err\.message\}`\);/g,
        'void err;'
      )
      s = s.replace(
        /console\.log\(err\);/g,
        'void err;'
      )
    }

    if (name === 'bareIco.js') {
      s = s.replace(
        /new Error\("ICO encoding not yet implemented"\)/g,
        'new Error("ICO encoding unavailable in this bundle")'
      )
    }

    if (s !== orig) fs.writeFileSync(p, s)
  }
}