Added TypeScript support to the code interpreter

[mishushakov]

• Adds TypeScript support with SWC pre-compilation step
• Bump Node v20
• This does not add: top-level async/await, ES Modules

[linear]

E2B-1315 Support TS/JS natively in code-interpreter

[0div]

Pretty neat compiler, some questions/considerations:

• it seems like it accepts different module import types and targets most useful ECMAScripts, would it be possible/make sense to make it parameterizable from the SDK request?
• what's the resource footprint of calling this on each code execution? do you have any js vs ts benchmark test results?
• how do compilation errors look like to the end user?
• did you check if there's a way to run swc as a server of sorts, similar to how it can watch? that way we do not need to create a process each time?

[mishushakov]

hey

• the problem is that the ijavascript kernel only supports commonjs format, so if you try loading ES Module or any other format, the compiler should throw an error
• here's my benchmark code

node_modules/@swc/cli/bin/swc.js --config-file .ts.swcrc --filename index.ts  0.06s user 0.02s system 99% cpu 0.084 total

script:

const a: number = 1;
console.log(a)

• errors are regular ExecutionError

Execution {
  results: [],
  logs: {
    stdout: [],
    stderr: [],
  },
  error: ExecutionError {
    name: "TypeScriptCompilerError",
    value: "[Error:   x 'import', and 'export' cannot be used outside of module code\n   ,-[index.ts:2:1]\n 1 | \n 2 |     import test from \"module\";\n   :     ^^^^^^\n 3 |     console.log(x)\n   `----\n\n\nCaused by:\n    Syntax Error] {\n  code: 'GenericFailure'\n}\n",
    traceback: "",
  },
  executionCount: undefined,
  text: [Getter],
  toJSON: [Function: toJSON],
}

• not out of the box, I can wrap it in a server but it makes little sense - instead of starting new process we will be starting new http request which will be starting new process

[wong2]

Why not Node.js 22? It's the latest LTS version

[mishushakov]

@wong2 some native ijavascript dependencies didn't compile on v22