primitiveshaun

# node-commands.sh
# *** HOUSEKEEPING! One for the Node ***
# Master File: Maintained by Primitive Digital's Housekeeping Department
# https://primitivedigital.uk/housekeeping-department/

# STATUS ::: DRAFT: Requires Review

# version of npm
$ npm --version
$ npm -v

primitiveshaun

# svn-commands.sh
# *** HOUSEKEEPING! We all live in a yellow svn repository, a yellow svn repository... ***
# Master File: Maintained by Primitive Digital's Housekeeping Department
# https://primitivedigital.uk/housekeeping-department/

# STATUS ::: DRAFT: Requires Review

# version of svn
$ svn --version

primitiveshaun

// Class Inheritance Example
// NOT RECOMMENDED. Use object composition, instead.

// https://gist.github.com/ericelliott/b668ce0ad1ab540df915
// http://codepen.io/ericelliott/pen/pgdPOb?editors=001

class GuitarAmp {
  constructor ({ cabinet = 'spruce', distortion = '1', volume = '0' } = {}) {
    Object.assign(this, {
      cabinet, distortion, volume

primitiveshaun

const wait = time => new Promise((resolve) => setTimeout(resolve, time));

wait(3000).then(() => console.log('Hello!')); // 'Hello!'

primitiveshaun

const wait = (
  time,
  cancel = Promise.reject()
) => new Promise((resolve, reject) => {
  const timer = setTimeout(resolve, time);
  const noop = () => {};

  cancel.then(() => {
    clearTimeout(timer);
    reject(new Error('Cancelled'));

primitiveshaun

const wait = time => new Promise(
  res => setTimeout(() => res(), time)
);

wait(200)
  // onFulfilled() can return a new promise, `x`
  .then(() => new Promise(res => res('foo')))
  // the next promise will assume the state of `x`
  .then(a => a)
  // Above we returned the unwrapped value of `x`

primitiveshaun

// HOF Wraps the native Promise API
// to add take a shouldCancel promise and add
// an onCancel() callback.
const speculation = (
  fn,
  cancel = Promise.reject() // Don't cancel by default
) => new Promise((resolve, reject) => {
  const noop = () => {};

  const onCancel = (

primitiveshaun

import speculation from 'speculation';

const wait = (
  time,
  cancel = Promise.reject() // By default, don't cancel
) => speculation((resolve, reject, onCancel) => {
  const timer = setTimeout(resolve, time);

  // Use onCancel to clean up any lingering resources
  // and then call reject(). You can pass a custom reason.

primitiveshaun

const filter = (fn, arr) => arr.reduce((newArr, item) => {
  return fn(item) ? newArr.concat([item]) : newArr;
}, []);

primitiveshaun

// Custom JavaScript Performance Testing Script
// *** HOUSEKEEPING! Performance Review ***
// Master File: Maintained by Primitive Digital's Housekeeping Department
// https://primitivedigital.uk/housekeeping-department/

// This utilises the native 
// https://developer.mozilla.org/en-US/docs/Web/API/Performance

// This can be saved to an external JS file and placed in the library
// this will allow the performance tests to be toggled on/off based on a fied value