Make an assertion, error will be thrown if expr does not have truthy value.

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

Make an assertion that obj is an instance of type. If not then throw.

Executes a function which returns a promise, expecting it to reject.

Make an assertion that actual matches a snapshot. If the snapshot and actual do not a match, then throw.

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 and expected are strictly equal. If not then throw.

Executes a function, expecting it to throw. If it does not, then it throws.

Asserts at compile time that the provided type argument's type resolves to the expected boolean literal type.

Make the text bold.

Copies from src to dst until either EOF (null) is read from src or an error occurs. It resolves to the number of bytes copied or rejects with the first error encountered while copying.

Registers a test suite.

Return the directory path of a path.

Returns an async iterator that yields each file path matching the given glob pattern. The file paths are relative to the provided root directory. If root is not provided, the current working directory is used. The root directory is not included in the yielded file paths.

Formats a date to a string with the specified format.

Registers an individual test case.

Set text color to red.

Wraps a function or instance method with a Spy.

Remove ANSI escape codes from the string.

Registers a test suite.

Registers an individual test case.

Walk entry for walk, walkSync, expandGlob and expandGlobSync.

Checks if type T exactly matches type U.