primitives.js

//@ts-check
// These are some primitive values returned by the functions. There are even more primitives https://developer.mozilla.org/en-US/docs/Glossary/Primitive
// Actually there is no difference between an int and a float, but just for the fun of it we act like ther is one.

// Make the function return the right thing

/**
 * This function returns a boolean value.
 * @returns {boolean}
 */
function booleans() {
  return undefined;
}
/**
 * This function returns a integer value.
 * @returns {number}
 */
function ints() {
  return undefined;
}
/**
 * This function returns a floating point value.
 * @returns {number}
 */
function floats() {
  return undefined;
}

/**
 * This function returns a number value.
 * @returns {number}
 */
function numbers() {
  return undefined;
}
/**
 * This function returns an undefined value.
 * @returns {undefined}
 */
function undefineds() {
  return true;
}

/**
 * This function returns a null value.
 * @returns {null}
 */
function nulls() {
  return undefined;
}

/**
 * This function returns a string value.
 * @returns {string}
 */
function strings() {
  return undefined;
}

module.exports = { booleans, ints, numbers, floats, undefineds, nulls, strings };