# axios 工程搭建
- rollup.config.js 按源码配置增加typescript
import resolve from '@rollup/plugin-node-resolve'; //允许我们加载第三方模块
import commonjs from '@rollup/plugin-commonjs'; //插件将它们转换为ES6版本
import terser from '@rollup/plugin-terser'; //压缩,转译es6+语法，请改用terser
import json from '@rollup/plugin-json'; //可将.json文件转换为ES6模块
import { babel } from '@rollup/plugin-babel'; //正确解析我们的模块并使其与旧版浏览器兼容
import autoExternal from 'rollup-plugin-auto-external'; //自动添加至 externals 未免
import bundleSize from 'rollup-plugin-bundle-size'; //分析包大小工具
import ts from 'rollup-plugin-typescript2'; // typescript打包
// import serve from 'rollup-plugin-serve'; //服务
import path from 'path';
import fs from 'fs';
import { URL, fileURLToPath } from 'node:url';
const __filename = fileURLToPath(import.meta.url);
const pkgPath = path.resolve(path.dirname(__filename), './package.json');
const __dirname = path.dirname(__filename);
const lib = JSON.parse(fs.readFileSync(pkgPath, 'utf-8'));
const outputFileName = 'axios';
const name = 'axios';
const namedInput = './index.ts'; //入口路径
const defaultInput = './lib/axios.ts';
const buildConfig = ({ es5, browser = true, minifiedVersion = true, ...config }) => {
const { file } = config.output;
const ext = path.extname(file);
const basename = path.basename(file, ext);
const extArr = ext.split('.');
extArr.shift();
const build = ({ minified }) => ({
input: namedInput,
...config,
output: {
...config.output,
file: `${path.dirname(file)}/${basename}.${(minified ? ['min', ...extArr] : extArr).join('.')}`,
},
plugins: [
json(),
resolve({ browser, extensions: ['.js', '.ts'] }),
commonjs(),
ts({
tsconfig: path.resolve(__dirname, 'tsconfig.json'),
}),
// serve({
// port: 8000,
// contentBase: '', // 表示起的服务是在根目录下
// openPage: 'index.html', // 打开的是哪个文件
// open: true, // 默认打开浏览器
// }),
minified && terser(),
minified && bundleSize(),
...(es5
? [
babel({
babelHelpers: 'bundled',
presets: ['@babel/preset-env'],
}),
]
: []),
...(config.plugins || []),
],
});
const configs = [build({ minified: false })];
if (minifiedVersion) {
configs.push(build({ minified: true }));
}
return configs;
};
export default async () => {
const year = new Date().getFullYear();
const banner = `// Axios v${lib.version} Copyright (c) ${year} ${lib.author} and contributors`;
return [
// browser ESM bundle for CDN
...buildConfig({
input: namedInput,
output: {
file: `dist/esm/${outputFileName}.js`,
format: 'esm',
generatedCode: {
constBindings: true,
},
exports: 'named',
banner,
},
}),
// Browser UMD bundle for CDN
...buildConfig({
input: defaultInput,
es5: true,
output: {
file: `dist/${outputFileName}.js`,
name,
format: 'umd',
exports: 'default',
banner,
},
}),
// Browser CJS bundle
...buildConfig({
input: defaultInput,
es5: false,
minifiedVersion: false, // 是否打包mini版本
output: {
file: `dist/browser/${name}.cjs`,
name,
format: 'cjs',
exports: 'default',
banner,
},
}),
// Node.js commonjs bundle
{
input: defaultInput,
output: {
file: `dist/node/${name}.cjs`,
format: 'cjs',
generatedCode: {
constBindings: true,
},
exports: 'default',
banner,
},
plugins: [
autoExternal(),
ts({
tsconfig: path.resolve(__dirname, 'tsconfig.json'),
}),
resolve({ extensions: ['.js', '.ts'] }),
commonjs(),
],
},
];
};
- tsconfig.json
{
"compilerOptions": {
/* Basic Options */
"target": "es5", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
"module": "ESNext", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
"lib": ["es2015", "es2016", "es2017", "dom"], /* Specify library files to be included in the compilation. */
// "allowJs": true, /* Allow javascript files to be compiled. */
// "checkJs": true, /* Report errors in .js files. */
// "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
"declaration": true, /* Generates corresponding '.d.ts' file. */
// "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
"sourceMap": true, /* Generates corresponding '.map' file. */
// "outFile": "./", /* Concatenate and emit output to single file. */
// "outDir": "./", /* Redirect output structure to the directory. */
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true, /* Enable project compilation */
// "removeComments": true, /* Do not emit comments to output. */
// "noEmit": true, /* Do not emit outputs. */
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
// "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
/* Strict Type-Checking Options */
"strict": true, /* Enable all strict type-checking options. */
// "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
// "strictNullChecks": true, /* Enable strict null checks. */
// "strictFunctionTypes": true, /* Enable strict checking of function types. */
// "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
// "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
// "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
// "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
/* Additional Checks */
// "noUnusedLocals": true, /* Report errors on unused locals. */
// "noUnusedParameters": true, /* Report errors on unused parameters. */
// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
/* Module Resolution Options */
"moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
// "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
// "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
// "typeRoots": [], /* List of folders to include type definitions from. */
// "types": [], /* Type declaration files to be included in compilation. */
"allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
"esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
/* Source Map Options */
// "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
/* Experimental Options */
"experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
"emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
"declarationDir": "dist/types",
"typeRoots": [
"node_modules/@types"
]
},
"include": [
"lib",
"index.ts"
]
}
一、官方案例（./sandbox/client.html）
var options = {
"url": "/api",
"params": null,
"method": "GET",
"headers": null
};
axios(options)
.then(function (res) {
response.innerHTML = JSON.stringify(res.data, null, 2);
error.innerHTML = "None";
})
.catch(function (res) {
error.innerHTML = JSON.stringify(res.toJSON(), null, 2)
console.error('Axios caught an error from request', res.toJSON());
response.innerHTML = JSON.stringify(res.data, null, 2);
});
二、跑通该案列 (按源码思路修改代码)
- 主入口
// index.js
import axios from './lib/axios.js';
export default axios
- 实例化
// ./lib/axios.js
import Axios from "./core/Axios";
function createInstance() {
const context = new Axios();
const instance = async function () {
return await context.request(...arguments)
}
return instance
}
const axios = createInstance()
export default axios
// 实例化
const axios = createInstance()
export default axios
- Axios类（核心逻辑）
// ./lib/core/Axios.js
import dispatchRequest from './../request/xhr'
class Axios {
constructor() {
}
async request(configOrUrl) {
const config = Object.assign({}, configOrUrl)
const res = await dispatchRequest.call(this, config);
return res
}
}
export default Axios
- 请求
// ./lib/core/request/xhr.js
export default async function dispatchRequest(config) {
const fullPath = config.url
let request = new XMLHttpRequest();
request.open(config.method.toUpperCase(), fullPath, true);
// Send the request
request.send(config.params || null);
//监听请求变化
request.onreadystatechange = function handleLoad() {
// 请求错误
if (!request || request.readyState !== 4) {
return
}
return onloadend()
}
// 函数
function onloadend() {
console.log('响应：', request.response)
return request.response
}
}
github地址：https://github.com/power812/power-project-dev/tree/dev/1.0.0/packages/power-fetch-axios
