text: 'use strict';
  
  /*
   * Create the `abs` function that takes one number argument
   * and returns its absolute value.
   * You are not allowed to use `Math.abs`, make your own.
   * see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/abs
   *
   * @notions Functions, Ternary
   */
  
  // Your code:
  
  //* Begin of tests
  const assert = require('assert');
  
  assert.strictEqual(typeof abs, 'function');
  assert.strictEqual(abs.toString().includes('Math.abs'), false);
  assert.notStrictEqual(abs, Math.abs);
  assert.strictEqual(abs.length, 1);
  assert.strictEqual(abs(0), 0);
  assert.strictEqual(abs(-1), 1);
  assert.strictEqual(abs(-13.2), 13.2);
  assert.strictEqual(abs(132), 132);
  // End of tests */
  