ts-axios-demo v0.1.3

typescript实现axios

Use

same with axios

安装

npm i -g typescript

tsc --version
# 3.4.6

tsc [name].ts # 进行编译
tsc [name].ts --target es5 # 编译目标是 es5
tsc [name].ts --strictNullChecks # 变量不可以赋值为 null undefined

文档请看 ts-axios-doc 项目

项目初始化

使用 typescript-library-starter 项目进行初始化

git clone https://github.com/alexjoverm/typescript-library-starter ts-axios

cd ts-axios
npm install
# npm install 之后，会自动执行一些操作，比如删除 .git，重命名等等
# 实现原理: package.json 中 scripts 增加了 postinstall 命令，该命令可以在 npm 装包后自动触发
# 官方链接: https://docs.npmjs.com/misc/scripts

项目脚本

npm run dev # 启动 examples 中 express 服务及 webpack 打包服务
npm run build # 项目打包
npm run pub # 项目发布，版本升级，注意不要手动修改package.json的version，通过npm version会自动修改
# 注意package.json中以下几个字段
# "main": "dist/ts-axios.umd.js", umd 规范引入路径
# "module": "dist/ts-axios.es5.js", es 规范引入路径
# "typings": "dist/types/axios.d.ts", typescript类型定义文件位置
# "files": [
#   "dist"
# ], npm 发布的文件夹

代码提交

npm run commit
git-cz # commitizen 包提供的

tsconfig.json配置文件文档

• tsconfi.json
• compiler options

以下为 TypeScript library starter 的文档

参考文档汇总

• url参数处理规范
• XMLHttpRequest send方法
• Mocking Axios in Jest + Testing Async Functions
• jest: Testing Asynchronous Code
• UMD、CommonJS、ES Module、AMD、CMD模块的写法

遗留问题

• test/helpers/error.spec.ts: super 继承对测试覆盖率支持的坑，暂时使用 / istanbul ignore next / 跳过了这里

TypeScript library starter

A starter project that makes creating a TypeScript library extremely easy.

Usage

git clone https://github.com/alexjoverm/typescript-library-starter.git YOURFOLDERNAME
cd YOURFOLDERNAME

# Run npm install and write your library name when asked. That's all!
npm install

Start coding! package.json and entry files are already set up for you, so don't worry about linking to your main file, typings, etc. Just keep those files with the same name.

Features

• Zero-setup. After running npm install things will setup for you :wink:
• RollupJS for multiple optimized bundles following the standard convention and Tree-shaking
• Tests, coverage and interactive watch mode using Jest
• Prettier and TSLint for code formatting and consistency
• Docs automatic generation and deployment to gh-pages, using TypeDoc
• Automatic types (*.d.ts) file generation
• Travis integration and Coveralls report
• (Optional) Automatic releases and changelog, using Semantic release, Commitizen, Conventional changelog and Husky (for the git hooks)

Importing library

You can import the generated bundle to use the whole library generated by this starter:

import myLib from 'mylib'

Additionally, you can import the transpiled modules from dist/lib in case you have a modular library:

import something from 'mylib/dist/lib/something'

NPM scripts

• npm t: Run test suite
• npm start: Run npm run build in watch mode
• npm run test:watch: Run test suite in interactive watch mode
• npm run test:prod: Run linting and generate coverage
• npm run build: Generate bundles and typings, create docs
• npm run lint: Lints code
• npm run commit: Commit using conventional commit style (husky will tell you to use it if you haven't :wink:)

Excluding peerDependencies

On library development, one might want to set some peer dependencies, and thus remove those from the final bundle. You can see in Rollup docs how to do that.

Good news: the setup is here for you, you must only include the dependency name in external property within rollup.config.js. For example, if you want to exclude lodash, just write there external: ['lodash'].

Automatic releases

Prerequisites: you need to create/login accounts and add your project to:

• npm
• Travis CI
• Coveralls

Prerequisite for Windows: Semantic-release uses node-gyp so you will need to install Microsoft's windows-build-tools using this command:

npm install --global --production windows-build-tools

Setup steps

Follow the console instructions to install semantic release and run it (answer NO to "Do you want a .travis.yml file with semantic-release setup?").

Note: make sure you've setup repository.url in your package.json file

npm install -g semantic-release-cli
semantic-release-cli setup
# IMPORTANT!! Answer NO to "Do you want a `.travis.yml` file with semantic-release setup?" question. It is already prepared for you :P

From now on, you'll need to use npm run commit, which is a convenient way to create conventional commits.

Automatic releases are possible thanks to semantic release, which publishes your code automatically on github and npm, plus generates automatically a changelog. This setup is highly influenced by Kent C. Dodds course on egghead.io

Git Hooks

There is already set a precommit hook for formatting your code with Prettier :nail_care:

By default, there are two disabled git hooks. They're set up when you run the npm run semantic-release-prepare script. They make sure:

• You follow a conventional commit message
• Your build is not going to fail in Travis (or your CI server), since it's runned locally before git push

This makes more sense in combination with automatic releases

FAQ

Array.prototype.from, Promise, Map... is undefined?

TypeScript or Babel only provides down-emits on syntactical features (class, let, async/await...), but not on functional features (Array.prototype.find, Set, Promise...), . For that, you need Polyfills, such as core-js or babel-polyfill (which extends core-js).

For a library, core-js plays very nicely, since you can import just the polyfills you need:

import "core-js/fn/array/find"
import "core-js/fn/string/includes"
import "core-js/fn/promise"
...

What is npm install doing on first run?

It runs the script tools/init which sets up everything for you. In short, it:

• Configures RollupJS for the build, which creates the bundles
• Configures package.json (typings file, main file, etc)
• Renames main src and test files

What if I don't want git-hooks, automatic releases or semantic-release?

Then you may want to:

• Remove commitmsg, postinstall scripts from package.json. That will not use those git hooks to make sure you make a conventional commit
• Remove npm run semantic-release from .travis.yml

What if I don't want to use coveralls or report my coverage?

Remove npm run report-coverage from .travis.yml

Resources

• Write a library using TypeScript library starter by @alexjoverm
• 📺 Create a TypeScript Library using typescript-library-starter by @alexjoverm
• Introducing TypeScript Library Starter Lite by @tonysneed

Projects using typescript-library-starter

Here are some projects that use typescript-library-starter:

• NOEL - A universal, human-centric, replayable event emitter
• droppable - A library to give file dropping super-powers to any HTML element.
• redis-messaging-manager - Pubsub messaging library, using redis and rxjs

Credits

Made with :heart: by @alexjoverm and all these wonderful contributors (emoji key):

This project follows the all-contributors specification. Contributions of any kind are welcome!