Unable to import (use) pythonia

[codehz]

What version of Bun is running?

0.7.3

What platform is your computer?

Darwin 22.5.0 arm64 arm

What steps can reproduce the bug?

code:

import { python } from "pythonia";

console.log(await python('json'))

What is the expected behavior?

run without problem

What do you see instead?

28 |     // internal V8 serialization APIs; fast but unusable in Python.
29 |     // See https://github.com/nodejs/node/issues/39317
30 |     const symbols = Object.getOwnPropertySymbols(this.proc)
31 |     const symbol = symbols.find(sym => sym.toString() === 'Symbol(kChannelHandle)')
32 |     const channel = this.proc[symbol]
33 |     channel._writeUtf8String = channel.writeUtf8String
                                   ^
TypeError: undefined is not an object (evaluating 'channel.writeUtf8String')

Additional information

related code:
https://github.com/extremeheat/JSPyBridge/blob/1e7a6a4a8193eeb8af3fab5587c2ea6da576b130/src/pythonia/IpcPipeCom.js#L22-L44

[Hanaasagi]

Related to IPC channel, https://nodejs.org/api/process.html#processchannel

const cp = require("node:child_process");
const assert = require("node:assert");

if (process.argv[2] === "child") {
  setTimeout(() => { }, 100);
} else {
  const child = cp.spawn(process.execPath, [__filename, "child"], { stdio: [null, null, null, "ipc"] });
  console.log(child.channel);
}

[AaronDewes]

Is compatibility with packages that rely on V8 internals even a goal for Bun?

[birkskyum]

Is compatibility with packages that rely on V8 internals even a goal for Bun?

there was some talk about this in here #4259 (comment)

[codehz]

Is compatibility with packages that rely on V8 internals even a goal for Bun?

I think it is node’s internal, not v8, since no native module used here

[AaronDewes]

Is compatibility with packages that rely on V8 internals even a goal for Bun?

I think it is node’s internal, not v8, since no native module used here

I was just saying that because of the comment in pythonia's code which says "internal V8 serialization APIs; fast but unusable in Python."

[codehz]

I was just saying that because of the comment in pythonia's code which says "internal V8 serialization APIs; fast but unusable in Python."

oh, it is not complete, the whole comment is

BAD HACK: since the channel is not exposed, and we need to send JSON with a custom serializer, we basically have two choices:

1. either JSON.stringify it with a custom encoder in our lib, then have it JSON.stringified again in the Node.js standard lib, then unwrapped twice in Python, or
2. use a hack to get the low level IPC API and write raw strings to it.

There is no 'string' serialization option for IPC. It's either JSON or 'Advanced' which uses internal V8 serialization APIs;

so it basically saying, pythonia cannot use node’s ipc channel directly and there no api to pass a custom channel (without break stdio), so they have to hijack the default ipc channel’s serialization mechanism

[paperdave]

We are not going to implement Symbol(kChannelHandle) (an internal node.js symbol) for bun.

but maybe we can add an alternative text mode as proposed in nodejs/node#39317 (this issue was closed for inactivity)