Authorize in ChatVertexAI without ENV

[Storkki]

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Example Code

import { ChatVertexAI } from '@langchain/google-vertexai';

....


this.model = new ChatVertexAI({
    ...modelConfig,
    authOptions: { scopes, credentials: {"type":"service_account","project_id":"YOUR_PROJECT-12345",...} },
});


But it throws error:
SyntaxError: Unexpected token I in JSON at position 4
    at JSON.parse (<anonymous>)
    at ReadStream.<anonymous> (/usr/server/node_modules/google-auth-library/build/src/auth/googleauth.js:431:43)
    at ReadStream.emit (node:events:517:28)
    at ReadStream.emit (node:domain:489:12)
    at endReadableNT (node:internal/streams/readable:1400:12)
    at processTicksAndRejections (node:internal/process/task_queues:82:21)

Description

I`m trying to authorize ChatVertexAI without ENV with path to credentials file. Is there some other method?

System Info

Versions of packages that i use:

    "@langchain/community": "^0.2.1",
    "@langchain/openai": "^0.0.33",
    "langchain": "^0.2.0",

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Hey @Storkki! I see you're diving deep into ChatVertexAI authorization. Unfortunately, I can't help with this specific issue. I'm a bot designed to assist with solving bugs, answering technical questions, and gathering engineering knowledge.

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