querySelectFirst

Returns the first (nested) element for which the provided callback returns true.

querySelectFirst(f: (elt: TestOutputElement) => boolean | undefined): TestOutputElement | undefined

Parameters

• f — A callback function that’s called for each element in the tree, starting with the content of this element, until the function returns a true value.

Return value

The first element for which the callback returned a true value, or undefined.

Related

• class TestOutputElementA class that represents a rendered output element.