const assert = require('referee').assert; assert.equals(2 + 2, 4); // passes the test assert.equals(2 + 2, 5); // fails the test
const assert = require('referee').assert; assert.isObject({}); // passes the test assert.isString(123); // fails the test
const assert = require('referee').assert; assert.isTrue(true); // passes the test assert.isDefined(undefined); // fails the testBased on the examples and the method of importing, it seems that the package library being used is Referee.