Updated JavaScript kernel with typescript, top-level async/await, es module import, promise resolution

[mishushakov]

changelog

• replaces ijavascript kernel with a fork that includes a compiler step and promise resolution
• removes typescript compiler step as this is now built-in in the kernel
• tests/docs will follow in a separate PR

kernel changes:

• n-riesco/ijavascript@master...e2b-dev:ijavascript:master
• n-riesco/nel@master...e2b-dev:nel:master

one note: currently Node will issue a warning to stderr when trying to import ESM module - we can disable that in the kernel.

Examples

snippet:

import got from "got"

before:

Execution {
  results: [],
  logs: {
    stdout: [],
    stderr: [],
  },
  error: ExecutionError {
    name: "SyntaxError",
    value: "Cannot use import statement outside a module",
    traceback: "evalmachine.<anonymous>:2  import got from \"got\"  ^^^^^^SyntaxError: Cannot use import statement outside a module    at new Script (node:vm:117:7)    at createScript (node:vm:269:10)    at Object.runInThisContext (node:vm:317:10)    at run ([eval]:1020:15)    at onRunRequest ([eval]:864:18)    at onMessage ([eval]:828:13)    at process.emit (node:events:524:28)    at emit (node:internal/child_process:950:14)    at process.processTicksAndRejections (node:internal/process/task_queues:83:21)",
  },
  executionCount: 1,
  text: [Getter],
  toJSON: [Function: toJSON],
}

after:

Execution {
  results: [],
  logs: {
    stdout: [],
    stderr: [ "(node:322) ExperimentalWarning: vm.USE_MAIN_CONTEXT_DEFAULT_LOADER is an experimental feature and might change at any time\n(Use `node --trace-warnings ...` to show where the warning was created)\n" ],
  },
  error: undefined,
  executionCount: 1,
  text: [Getter],
  toJSON: [Function: toJSON],
}

(see my note regarding the warning)

snippet:

const s: string = "Hello, world!"
s

before:

Execution {
  results: [],
  logs: {
    stdout: [],
    stderr: [],
  },
  error: ExecutionError {
    name: "SyntaxError",
    value: "Missing initializer in const declaration",
    traceback: "evalmachine.<anonymous>:2  const s: string = \"Hello, world!\"        ^SyntaxError: Missing initializer in const declaration    at new Script (node:vm:117:7)    at createScript (node:vm:269:10)    at Object.runInThisContext (node:vm:317:10)    at run ([eval]:1020:15)    at onRunRequest ([eval]:864:18)    at onMessage ([eval]:828:13)    at process.emit (node:events:524:28)    at emit (node:internal/child_process:950:14)    at process.processTicksAndRejections (node:internal/process/task_queues:83:21)",
  },
  executionCount: 1,
  text: [Getter],
  toJSON: [Function: toJSON],
}

after:

Execution {
  results: [
    Result {
      isMainResult: true,
      text: "Hello, world!",
      html: undefined,
      markdown: undefined,
      svg: undefined,
      png: undefined,
      jpeg: undefined,
      pdf: undefined,
      latex: undefined,
      json: undefined,
      javascript: undefined,
      raw: [Object ...],
      data: undefined,
      chart: undefined,
      extra: [Object ...],
      formats: [Function: formats],
      toJSON: [Function: toJSON],
    }
  ],
  logs: {
    stdout: [],
    stderr: [],
  },
  error: undefined,
  executionCount: 1,
  text: [Getter],
  toJSON: [Function: toJSON],
}

snippet:

const res = await fetch("https://example.com")
await res.text()

before:

Execution {
  results: [],
  logs: {
    stdout: [],
    stderr: [],
  },
  error: ExecutionError {
    name: "SyntaxError",
    value: "await is only valid in async functions and the top level bodies of modules",
    traceback: "evalmachine.<anonymous>:2  const res = await fetch(\"https://example.com\")              ^^^^^SyntaxError: await is only valid in async functions and the top level bodies of modules    at new Script (node:vm:117:7)    at createScript (node:vm:269:10)    at Object.runInThisContext (node:vm:317:10)    at run ([eval]:1020:15)    at onRunRequest ([eval]:864:18)    at onMessage ([eval]:828:13)    at process.emit (node:events:524:28)    at emit (node:internal/child_process:950:14)    at process.processTicksAndRejections (node:internal/process/task_queues:83:21)",
  },
  executionCount: 1,
  text: [Getter],
  toJSON: [Function: toJSON],
}

after:

Execution {
  results: [
    Result {
      isMainResult: true,
      text: "<!doctype html>\\n' +\n  '<html>\\n' +\n  '<head>\\n' +\n  '    <title>Example Domain</title>\\n' +\n  '\\n' +\n  '    <meta charset=\"utf-8\" />\\n' +\n  '    <meta http-equiv=\"Content-type\" content=\"text/html; charset=utf-8\" />\\n' +\n  '    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\" />\\n' +\n  '    <style type=\"text/css\">\\n' +\n  '    body {\\n' +\n  '        background-color: #f0f0f2;\\n' +\n  '        margin: 0;\\n' +\n  '        padding: 0;\\n' +\n  '        font-family: -apple-system, system-ui, BlinkMacSystemFont, \"Segoe UI\", \"Open Sans\", \"Helvetica Neue\", Helvetica, Arial, sans-serif;\\n' +\n  '        \\n' +\n  '    }\\n' +\n  '    div {\\n' +\n  '        width: 600px;\\n' +\n  '        margin: 5em auto;\\n' +\n  '        padding: 2em;\\n' +\n  '        background-color: #fdfdff;\\n' +\n  '        border-radius: 0.5em;\\n' +\n  '        box-shadow: 2px 3px 7px 2px rgba(0,0,0,0.02);\\n' +\n  '    }\\n' +\n  '    a:link, a:visited {\\n' +\n  '        color: #38488f;\\n' +\n  '        text-decoration: none;\\n' +\n  '    }\\n' +\n  '    @media (max-width: 700px) {\\n' +\n  '        div {\\n' +\n  '            margin: 0 auto;\\n' +\n  '            width: auto;\\n' +\n  '        }\\n' +\n  '    }\\n' +\n  '    </style>    \\n' +\n  '</head>\\n' +\n  '\\n' +\n  '<body>\\n' +\n  '<div>\\n' +\n  '    <h1>Example Domain</h1>\\n' +\n  '    <p>This domain is for use in illustrative examples in documents. You may use this\\n' +\n  '    domain in literature without prior coordination or asking for permission.</p>\\n' +\n  '    <p><a href=\"https://www.iana.org/domains/example\">More information...</a></p>\\n' +\n  '</div>\\n' +\n  '</body>\\n' +\n  '</html>\\n",
      html: undefined,
      markdown: undefined,
      svg: undefined,
      png: undefined,
      jpeg: undefined,
      pdf: undefined,
      latex: undefined,
      json: undefined,
      javascript: undefined,
      raw: [Object ...],
      data: undefined,
      chart: undefined,
      extra: [Object ...],
      formats: [Function: formats],
      toJSON: [Function: toJSON],
    }
  ],
  logs: {
    stdout: [],
    stderr: [],
  },
  error: undefined,
  executionCount: 1,
  text: [Getter],
  toJSON: [Function: toJSON],
}