v0.42.6

v0.42.6 (2026-09-13)

Bug Fixes

• revert connection listener invocation (#834) (0e198c7) @kettanaito

v0.42.5

v0.42.5 (2026-09-10)

Bug Fixes

• fetch: prevent hanging on passthrough response stream cancellation (#833) (28a70d0) @kettanaito
• http: free parsers on non-HTTP upgrade (#832) (0ba3fd8) @kettanaito
• net: preserve passthrough writes until the client consumes EOF (#830) (04095ba) @kettanaito
• SocketController: prevent listeners leak on TLS passthrough (#829) (5767309) @kettanaito

v0.42.4

v0.42.4 (2026-09-08)

Bug Fixes

• WebSocket: properly export to bundle debug (#827) (6612286) @kettanaito
• http: handle server-closed keep-alive sockets and detach completed parsers (#826) (3a1ed89) @kettanaito
• http: stop observation on parser errors instead of crashing (#825) (8ba5a03) @kettanaito
• http: proper HTTP/2 negotiation for mocked and passthrough (#824) (133db63) @kettanaito
• WebSocket: prevent infinite loop on passthrough connections (#823) (b6362de) @kettanaito

v0.42.3

v0.42.3 (2026-07-24)

Bug Fixes

• socket: properly handle first bytes when switching socket types (#814) (2a08722) @kettanaito

v0.42.2

v0.42.2 (2026-07-24)

Bug Fixes

• socket: move last resort passthrough to the socket level (#812) (d202082) @kettanaito
• socket: close connection on CONNECT request refusal (#811) (d00cc8a) @kettanaito

v0.42.1

v0.42.1 (2026-07-22)

Bug Fixes

• bundle debug in browser build (#809) (5e7592a) @kettanaito

v0.42.0

v0.42.0 (2026-07-22)

• Implements TCP/TLS wrap-based interception (#770) (8a8fe6f) @kettanaito

⚠️ BREAKING CHANGES

• Node.js v22 is the minimal supported version.
• getRawRequest utility has been removed. Use the initiator reference on request listeners directly.
• /utils/node and getClientRequestBodyStream() has been removed. Use the initiator reference directly.
• file:// protocol requests are unsupported with fetch the same way they aren't supported in Node.js 22 and 24 (improved compliance).
• HTTP-to-WebSocket upgrade requests throw with fetch the same way they do in Node.js. Other upgrade paths are unaffected and function correctly (http.request, WebSocket, undici).

Features

• Supports Node.js v26.
• Supports CONNECT requests (fixes #481, closes #621).
• Supports Undici fetch and request even when they aren't global.
• Exposes the request initiator on the "request" event listener. The initiator property points to ClientRequest, XMLHttpRequest, or Request instance that initiated the intercepted request. If no instance can be reliably deduced, points to the raw net.Socket behind the connection.

Bug fixes

• The library now executes more of the Node.js network that ever before. In fact, it executes the biggest possible amount of Node.js code. We are literally patching before the C++ bindings.
• ClientRequest using sockets is now properly supported.
• Now it doesn't matter how you import http/https (e.g. import * as http broke previously since we cannot patch that).
• You can now end requests in the write callbacks. The documented limitation of Interceptors is gone.
• Clients waiting for the secureConnect before writing anything are now properly supported.
• TLS connections now correctly emit the keylog event on the socket.
• Fixes an issue where the automatic Content-Type header added by Undici was not set on mocked responses.
• socket.address(), as well as localAddress, localPort, localFamily, remoteAddress, remotePort, and `remoteFamily, are correctly set for both mocked and bypassed connections.
• XMLHttpRequest: Fixes an issue where redirect responses weren't being followed.
• XMLHttpRequest: Fixes an issue where the "progress" event for request.upload wasn't dispatched correctly.
• XMLHttpRequest: total response body length is now computed only from the content-length mocked response header, just like it's done natively.
• XMLHttpRequest: The progress event is now correctly emitted on the request for chunked responses.
• XMLHttpRequest (JSDOM): Correctly performs the OPTIONS preflight request based on the JSDOM implementation (previously, preflight triggered for requests that shouldn't trigger it).
• XMLHttpRequest: Implements mock response handling in accordance to the WHATWG XMLHttpRequest specification to improve browser compliance.

v0.41.9

v0.41.9 (2026-05-11)

Bug Fixes

• use Symbol.for for internal symbols (#789) (b393ded) @kettanaito
• fetch: remove abort listener to prevent leak (#785) (a89b4e4) @kettanaito

v0.41.8

v0.41.8 (2026-05-01)

Bug Fixes

• support patching non-configurable writable properties (#780) (39372f7) @kettanaito

v0.41.7

v0.41.7 (2026-04-29)

Bug Fixes

• FetchResponse: preserve custom status and url after cloning (#778) (c1a4ba9) @kettanaito
• fetch: sanitize header tuples to fix Node.js 24 compatibility (#766) (fa0f1ee) @KrantiPonala @kettanaito