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Old Autumn
94e1543576
The module-level capability probe in the fetch adapter creates a ReadableStream as a Request body to test for streaming support, but never cancels it. The Request constructor sets up an internal pull pipeline on the stream; since the stream is never consumed or cancelled, the [[pullAlgorithm]] Promise remains pending indefinitely, causing an async resource leak detectable by Node.js async_hooks and Vitest --detect-async-leaks. Extract the ReadableStream to a variable and call body.cancel() after the probe completes to properly tear down the stream's internal pipeline.
axios // adapters
The modules under adapters/ are modules that handle dispatching a request and settling a returned Promise once a response is received.
Example
var settle = require('../core/settle');
module.exports = function myAdapter(config) {
// At this point:
// - config has been merged with defaults
// - request transformers have already run
// - request interceptors have already run
// Make the request using config provided
// Upon response settle the Promise
return new Promise(function (resolve, reject) {
var response = {
data: responseData,
status: request.status,
statusText: request.statusText,
headers: responseHeaders,
config: config,
request: request,
};
settle(resolve, reject, response);
// From here:
// - response transformers will run
// - response interceptors will run
});
};