fix: #3698 - o1 preview models do not work with max_tokens

[louis-jan]

Describe Your Changes

This PR addresses the issue where OpenAI preview models don't work with the max_tokens parameter. We'll likely deprecate model.json for remote models at least, so we're not introducing new model parameter support. Instead, we're using the standard payload transform that's been applied to other providers.

The changes are mostly about adding tests.

When making a request using o1-preview or o1-mini, getting:

Unsupported parameter: 'max_tokens' is not supported with this model. Use 'max_completion_tokens' instead.
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Cannot change these model parameters settings.

o1-preview

gpt-3.5-turbo

Fixes Issues

• Fixes bug: O1-Preview does not work because of: "Unsupported parameter: 'max_tokens' is not supported with this model.". #3698

Additions and Changes:

1. Addition of Jest Configuration:

   • A new Jest configuration file jest.config.js has been added under extensions/inference-openai-extension. This setting includes configurations such as preset, testEnvironment, and custom transformations for testing @janhq/core modules.

2. Addition of Jest Test File:

   • A new Jest test file OpenAIExtension.test.ts has been added under src. This test suite mocks the @janhq/core module and includes tests for the JanInferenceOpenAIExtension class, including initialization, payload transformation, and other functionalities specific to different model types.

3. Modifications to index.ts:

   • The index.ts file has been modified to incorporate new exports and enums, and introduce a transformPayload method within the JanInferenceOpenAIExtension class. The payload transformation accounts for differences between preview models (o1-mini, o1-preview) and non-preview models.
   • The payload transformation specifically handles fields like max_completion_tokens for preview models, while other models retain their original payload structure.

4. Changes to tsconfig.json:

   • The TypeScript configuration file in tsconfig.json adds an "exclude" field to exclude test files (those ending in .test.ts) from compilation. This likely ensures that unit test files are not included in the final production build.

[github-actions]

Barecheck - Code coverage report

Total: 62.56%

Your code coverage diff: 0.00% ▴

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