Christian-health / StudyNote2017

2017年学习笔记
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吴浩麟老师的webpack书籍学习 : http://webpack.wuhaolin.cn/ #55

Open Christian-health opened 6 years ago

Christian-health commented 6 years ago

1-1 前端的发展

1-1-

Christian-health commented 6 years ago

4-13 使用 Prepack

4-13- prepack

Christian-health commented 6 years ago

4-14 开启 Scope Hoisting

4-14- scope hoisting

Christian-health commented 6 years ago

4-15 输出分析

4-15-

Christian-health commented 6 years ago

4-16 优化总结

Christian-health commented 6 years ago

5-1 工作原理概括

5-1-

Christian-health commented 6 years ago

5-2 输出文件分析

bundle.js

/******/ (function(modules) { // webpackBootstrap
/******/    // install a JSONP callback for chunk loading
/******/    var parentJsonpFunction = window["webpackJsonp"];
/******/    window["webpackJsonp"] = function webpackJsonpCallback(chunkIds, moreModules, executeModules) {
/******/        // add "moreModules" to the modules object,
/******/        // then flag all "chunkIds" as loaded and fire callback
/******/        var moduleId, chunkId, i = 0, resolves = [], result;
/******/        for(;i < chunkIds.length; i++) {
/******/            chunkId = chunkIds[i];
/******/            if(installedChunks[chunkId]) {
/******/                resolves.push(installedChunks[chunkId][0]);
/******/            }
/******/            installedChunks[chunkId] = 0;
/******/        }
/******/        for(moduleId in moreModules) {
/******/            if(Object.prototype.hasOwnProperty.call(moreModules, moduleId)) {
/******/                modules[moduleId] = moreModules[moduleId];
/******/            }
/******/        }
/******/        if(parentJsonpFunction) parentJsonpFunction(chunkIds, moreModules, executeModules);
/******/        while(resolves.length) {
/******/            resolves.shift()();
/******/        }
/******/
/******/    };
/******/
/******/    // The module cache
/******/    var installedModules = {};
/******/
/******/    // objects to store loaded and loading chunks
/******/    var installedChunks = {
/******/        1: 0
/******/    };
/******/
/******/    // The require function
/******/    function __webpack_require__(moduleId) {
/******/
/******/        // Check if module is in cache
/******/        if(installedModules[moduleId]) {
/******/            return installedModules[moduleId].exports;
/******/        }
/******/        // Create a new module (and put it into the cache)
/******/        var module = installedModules[moduleId] = {
/******/            i: moduleId,
/******/            l: false,
/******/            exports: {}
/******/        };
/******/
/******/        // Execute the module function
/******/        modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/        // Flag the module as loaded
/******/        module.l = true;
/******/
/******/        // Return the exports of the module
/******/        return module.exports;
/******/    }
/******/
/******/    // This file contains only the entry chunk.
/******/    // The chunk loading function for additional chunks
/******/    __webpack_require__.e = function requireEnsure(chunkId) {
/******/        var installedChunkData = installedChunks[chunkId];
/******/        if(installedChunkData === 0) {
/******/            return new Promise(function(resolve) { resolve(); });
/******/        }
/******/
/******/        // a Promise means "currently loading".
/******/        if(installedChunkData) {
/******/            return installedChunkData[2];
/******/        }
/******/
/******/        // setup Promise in chunk cache
/******/        var promise = new Promise(function(resolve, reject) {
/******/            installedChunkData = installedChunks[chunkId] = [resolve, reject];
/******/        });
/******/        installedChunkData[2] = promise;
/******/
/******/        // start chunk loading
/******/        var head = document.getElementsByTagName('head')[0];
/******/        var script = document.createElement('script');
/******/        script.type = "text/javascript";
/******/        script.charset = 'utf-8';
/******/        script.async = true;
/******/        script.timeout = 120000;
/******/
/******/        if (__webpack_require__.nc) {
/******/            script.setAttribute("nonce", __webpack_require__.nc);
/******/        }
/******/        script.src = __webpack_require__.p + "" + chunkId + ".bundle.js";
/******/        var timeout = setTimeout(onScriptComplete, 120000);
/******/        script.onerror = script.onload = onScriptComplete;
/******/        function onScriptComplete() {
/******/            // avoid mem leaks in IE.
/******/            script.onerror = script.onload = null;
/******/            clearTimeout(timeout);
/******/            var chunk = installedChunks[chunkId];
/******/            if(chunk !== 0) {
/******/                if(chunk) {
/******/                    chunk[1](new Error('Loading chunk ' + chunkId + ' failed.'));
/******/                }
/******/                installedChunks[chunkId] = undefined;
/******/            }
/******/        };
/******/        head.appendChild(script);
/******/
/******/        return promise;
/******/    };
/******/
/******/    // expose the modules object (__webpack_modules__)
/******/    __webpack_require__.m = modules;
/******/
/******/    // expose the module cache
/******/    __webpack_require__.c = installedModules;
/******/
/******/    // define getter function for harmony exports
/******/    __webpack_require__.d = function(exports, name, getter) {
/******/        if(!__webpack_require__.o(exports, name)) {
/******/            Object.defineProperty(exports, name, {
/******/                configurable: false,
/******/                enumerable: true,
/******/                get: getter
/******/            });
/******/        }
/******/    };
/******/
/******/    // getDefaultExport function for compatibility with non-harmony modules
/******/    __webpack_require__.n = function(module) {
/******/        var getter = module && module.__esModule ?
/******/            function getDefault() { return module['default']; } :
/******/            function getModuleExports() { return module; };
/******/        __webpack_require__.d(getter, 'a', getter);
/******/        return getter;
/******/    };
/******/
/******/    // Object.prototype.hasOwnProperty.call
/******/    __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/    // __webpack_public_path__
/******/    __webpack_require__.p = "";
/******/
/******/    // on error function for async loading
/******/    __webpack_require__.oe = function(err) { console.error(err); throw err; };
/******/
/******/    // Load entry module and return exports
/******/    return __webpack_require__(__webpack_require__.s = 0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

// 异步加载 show.js
__webpack_require__.e/* import() */(0).then(__webpack_require__.bind(null, 1)).then((show) => {
  // 执行 show 函数
  show('Webpack');
});

/***/ })
/******/ ]);

0.bundle.js

webpackJsonp([0],[
/* 0 */,
/* 1 */
/***/ (function(module, exports) {

function show(content) {
  window.document.getElementById('app').innerText = 'Hello,' + content;
}

// 通过 CommonJS 规范导出 show 函数
module.exports = show;

/***/ })
]);

补充关于bind、call、apply函数的知识: https://www.cnblogs.com/Shd-Study/archive/2017/03/16/6560808.html lllllll 关于打包后的webpack程序好的解释: https://www.jianshu.com/p/0e5247f9975f

Christian-health commented 6 years ago

5-3 编写 Loader

5-3- loader

Christian-health commented 6 years ago

5-4 编写 Plugin

Christian-health commented 6 years ago

5-5 调试 Webpack

5-5- webpack

Christian-health commented 6 years ago

5-6 原理总结

Christian-health commented 6 years ago

常用 Loaders

Christian-health commented 6 years ago

常用 Plugins

Christian-health commented 6 years ago

其它 Webpack 学习资源

Christian-health commented 6 years ago

https://www.tslang.cn/docs/handbook/error.html