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ES6 Generators

Fu Cheng

An in-depth guide to ES6 generators. Free to view online.

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About

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About the Book

Generator is a new concept introduced to JavaScript in ECMAScript 2015 (or ES6). Generators are the new powerful tools which should be in each JavaScript developer's toolkit. Generators are mostly used in JavaScript frameworks and libraries. For example, Koa uses generators as middleware. Babel can use generators to transpile async/await functions. But generators are not commonly used in application code yet. The main reason is that generators are not easy to understand and adopt in day-to-day development.

This book focuses on real day-to-day development scenarios which can benefit from using generators.

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Author

About the Author

Fu Cheng

Full-stack software developer and content creator.

Contents

Table of Contents

IGenerators basics

1.Basic generators

  1. 1.1Suspend & resume execution
  2. 1.2Check types of generator functions and generator objects

2.Pass values to next()

3.return in generators

  1. 3.1Infinite values

4.Iterators & generators

  1. 4.1Iterators
  2. 4.2Iterables
  3. 4.3Iterate generator objects
  4. IIAdvanced generators

5.Arguments of generator functions

6.return method

7.throw method

8.yield*

  1. 8.1yield* & iterable objects
  2. 8.2yield* & generator objects
  3. 8.3Value of yield*

9.Nested yield and yield*

  1. 9.1Nested yield
  2. 9.2Nested yield and yield*

10.co

11.regenerator

  1. IIIReal-world usages

12.Koa

  1. 12.1Koa basics
  2. 12.2koa-compose

13.Babel

  1. 13.1Transform async/await
  2. IVUsage scenarios

14.Sequence generation

15.Fail-fast task queue

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