function assert(express, errmsg) {
  let test = new Assertion(null, null, chai.assert, true);
  test.assert(express, errmsg, '[ negation message unavailable ]');
}
### assert(expression, message)

Write your own test expressions.

    assert('foo' !== 'bar', 'foo is not bar');
    assert(Array.isArray([]), 'empty arrays are arrays');

@param {unknown} express - expression to test for truthiness
@param {string} errmsg - message to display on error
@name assert
@namespace Assert
@public