Replace globalThis.fetch with mockedFetch (or another function that matches the fetch signature)

Mock a new route, or override an existing handler.

This is the function that replaces fetch when you call install().

Remove an existing route handler.

Remove all existing route handlers.

Restore globalThis.fetch to what it was before this library was imported.

Make an assertion that actual and expected are equal, deeply. If not deeply equal, then throw.

Make an assertion that actual is not null or undefined. If not then throw.

Executes a function which returns a promise, expecting it to throw or reject. If it does not, then it throws. An error class and a string that should be included in the error message can also be asserted. Or you can pass a callback which will be passed the error, usually to apply some custom assertions on it.

Asserts that a spy is called as expected.

Asserts that a spy is called as much as expected and no more.

Make an assertion that actual includes expected. If not then throw.

Get a set of functions that do not share any state with the globals.

Preload the file that will be opened/read later.

Preloads virtual file that will be opened/read later.

Creates a function that returns the iterable values. Any iterable values that are errors will be thrown.

Wraps a function or instance method with a Spy.

Replaces an instance method with a Stub.

A function or instance method wrapper that records all calls made to it.

A handler type for a router path match which gets passed the matched values