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cleancoderockercleancoderocker
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Updated several design pattern examples
1 parent f6b107b commit 99e5642

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-252
lines changed

‎Kapitel7/AsyncAsyncControl.example.js

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const AsyncAsyncControl = require('./AsyncAsyncControl');
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const control = new AsyncAsyncControl();
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await control.play();
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await control.pause();
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‎Kapitel7/AsyncAsyncControl.js

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module.exports = class AsyncAsyncControl {
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async next(callback) {
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console.log('Next song');
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setTimeout(callback, 500);
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}
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async pause(callback) {
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console.log('Pause');
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setTimeout(callback, 500);
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}
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async play(callback) {
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console.log('Play');
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setTimeout(callback, 500);
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}
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async previous(callback) {
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console.log('Previous song');
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setTimeout(callback, 500);
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}
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async select(track, callback) {
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console.log(`Select track ${track}`);
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setTimeout(callback, 500);
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}
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async stop(callback) {
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console.log('Stop');
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setTimeout(callback, 500);
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}
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}

‎Kapitel7/AsyncControl.example.js

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const AsyncControl = require('./AsyncControl');
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const control = new AsyncControl();
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control
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.play(() => {
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control.pause(() => {
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control.select(7, () => {
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control.play(() => {
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control.next(() => {
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control.previous(() => {
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control.play(() => {
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control.stop(() => {
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console.log('Finished');
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});
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})
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});
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});
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});
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});
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});
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});

‎Kapitel7/AsyncControl.js

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module.exports = class AsyncControl {
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next(callback) {
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console.log('Next song');
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setTimeout(callback, 500);
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}
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pause(callback) {
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console.log('Pause');
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setTimeout(callback, 500);
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}
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play(callback) {
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console.log('Play');
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setTimeout(callback, 500);
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}
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previous(callback) {
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console.log('Previous song');
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setTimeout(callback, 500);
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}
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select(track, callback) {
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console.log(`Select track ${track}`);
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setTimeout(callback, 500);
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}
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stop(callback) {
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console.log('Stop');
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setTimeout(callback, 500);
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}
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}

‎Kapitel7/AsyncControlPromises.js

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module.exports = class AsyncControlPromises {
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next() {
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console.log('Next song');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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pause() {
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console.log('Pause');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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play() {
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console.log('Play');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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previous() {
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console.log('Previous song');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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select(track) {
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console.log(`Select track ${track}`);
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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stop() {
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console.log('Stop');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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}

‎Kapitel7/FluentAsyncControl.example.js

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const FluentAsyncControl = require('./FluentAsyncControl');
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const control = FluentAsyncControl.build();
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control
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.play()
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.pause()
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.select(7)
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.play()
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.next()
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.previous()
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.play()
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.stop();

‎Kapitel7/FluentAsyncControl.js

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class FluentAsyncControl {
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next(callback) {
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console.log('Next song');
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setTimeout(() => {
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console.log('Next song callback');
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if (typeof callback === 'function') {
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callback();
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}
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}, 500);
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}
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pause(callback) {
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console.log('Pause');
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setTimeout(() => {
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console.log('Pause callback');
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if (typeof callback === 'function') {
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callback();
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}
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}, 500);
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}
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play(callback) {
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console.log('Play');
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setTimeout(() => {
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console.log('Play callback');
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if (typeof callback === 'function') {
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callback();
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}
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}, 500);
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}
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previous(callback) {
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console.log('Previous song');
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setTimeout(() => {
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console.log('Previous song callback');
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if (typeof callback === 'function') {
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callback();
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}
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}, 500);
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}
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select(track, callback) {
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console.log(`Select track ${track}`);
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setTimeout(() => {
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console.log('Select track callback');
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if (typeof callback === 'function') {
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callback();
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}
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}, 500);
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}
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stop(callback) {
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console.log('Stop');
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setTimeout(() => {
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console.log('Stop callback');
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if (typeof callback === 'function') {
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callback();
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}
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}, 500);
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}
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}
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const API = (previousActions = Promise.resolve(), instance) => {
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return {
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next: () =>
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API(previousActions
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.then(() => new Promise((resolve, reject) => {
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instance.next(resolve);
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})), instance),
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pause: () =>
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API(previousActions
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.then(() => new Promise((resolve, reject) => {
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instance.pause(resolve);
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})), instance),
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play: () =>
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API(previousActions
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.then(() => new Promise((resolve, reject) => {
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instance.play(resolve);
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})), instance),
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previous: () =>
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API(previousActions
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.then(() => new Promise((resolve, reject) => {
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instance.previous(resolve);
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})), instance),
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select: (track) =>
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API(previousActions
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.then(() => new Promise((resolve, reject) => {
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instance.select(track, resolve);
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})), instance),
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stop: () =>
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API(previousActions
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.then(() => new Promise((resolve, reject) => {
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instance.stop(resolve);
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})), instance)
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};
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}
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const build = () => {
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const control = new FluentAsyncControl();
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return API(undefined, control);
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}
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module.exports.build = build;

‎Kapitel7/FluentAsyncControlAsyncAwait.example.js

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const FluentAsyncControlAsyncAwait = require('./FluentAsyncControlAsyncAwait');
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const control = FluentAsyncControlAsyncAwait.build();
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control
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.play()
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.pause()
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.select(7)
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.play()
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.next()
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.previous()
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.play()
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.stop();

‎Kapitel7/FluentAsyncControlAsyncAwait.js

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class FluentAsyncControlAsyncAwait {
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next() {
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console.log('Next song');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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pause() {
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console.log('Pause');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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play() {
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console.log('Play');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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previous() {
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console.log('Previous song');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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select(track) {
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console.log(`Select track ${track}`);
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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stop() {
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console.log('Stop');
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return new Promise((resolve, reject) => {
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setTimeout(resolve, 500);
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});
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}
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}
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const wrap = async (previousActions, instance, method, ...args) => {
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await previousActions;
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await instance[method](...args);
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}
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const API = (previousActions = Promise.resolve(), instance) => {
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return {
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next: () => API(wrap(previousActions, instance, 'next'), instance),
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pause: () => API(wrap(previousActions, instance, 'pause'), instance),
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play: () => API(wrap(previousActions, instance, 'play'), instance),
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previous: () => API(wrap(previousActions, instance, 'previous'), instance),
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select: (track) => API(wrap(previousActions, instance, 'select', track), instance),
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stop: () => API(wrap(previousActions, instance, 'stop'), instance)
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};
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}
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const build = () => {
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const control = new FluentAsyncControlAsyncAwait();
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return API(undefined, control);
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}
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module.exports.build = build;

‎Kapitel7/FluentAsyncControlOptimized.example.js

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const FluentAsyncControlOptimized = require('./FluentAsyncControlOptimized');
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const control = FluentAsyncControlOptimized.build();
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control
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.play()
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.pause()
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.select(7)
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.play()
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.next()
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.previous()
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.play()
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.stop();

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