function deepEqual( actual, expected, msg ) {
	/* eslint-disable no-invalid-this */
	this.comment( 'actual: '+actual+'. expected: '+expected+'. msg: '+msg+'.' );

	// TODO: implement
}
Asserts that `actual` is deeply equal to `expected`.

@private
@param {*} actual - actual value
@param {*} expected - expected value
@param {string} [msg] message