index.js
function assert (t, m) {
  if (!t) {
    var err = new AssertionError(m)
    if (Error.captureStackTrace) Error.captureStackTrace(err, assert)
    throw err
  }
}
function assert (t, m) {
  if (!t) {
    var err = new AssertionError(m)
    if (Error.captureStackTrace) Error.captureStackTrace(err, assert)
    throw err
  }
}
Minimal assert function
@param  {any} t Value to check if falsy
@param  {string=} m Optional assertion error message
@throws {AssertionError}