agsamantha/node_modules/langsmith/dist/singletons/fetch.js
2024-10-02 15:15:21 -05:00

22 lines
988 B
JavaScript

// Wrap the default fetch call due to issues with illegal invocations
// in some environments:
// https://stackoverflow.com/questions/69876859/why-does-bind-fix-failed-to-execute-fetch-on-window-illegal-invocation-err
// @ts-expect-error Broad typing to support a range of fetch implementations
const DEFAULT_FETCH_IMPLEMENTATION = (...args) => fetch(...args);
const LANGSMITH_FETCH_IMPLEMENTATION_KEY = Symbol.for("ls:fetch_implementation");
/**
* Overrides the fetch implementation used for LangSmith calls.
* You should use this if you need to use an implementation of fetch
* other than the default global (e.g. for dealing with proxies).
* @param fetch The new fetch functino to use.
*/
export const overrideFetchImplementation = (fetch) => {
globalThis[LANGSMITH_FETCH_IMPLEMENTATION_KEY] = fetch;
};
/**
* @internal
*/
export const _getFetchImplementation = () => {
return (globalThis[LANGSMITH_FETCH_IMPLEMENTATION_KEY] ??
DEFAULT_FETCH_IMPLEMENTATION);
};