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diffupdate-webpack-plugin

v1.0.6

Published

a tool for fe resource diff update

Downloads

1

Readme

diffupdate-webpack-plugin

中文文档

A Webpack Plugin that diff update javascript via differencing file change & creating a diff.json, when front end request a javascript, if there has already had a cache, it will patch update, or it will download the javascript file & cache it;

Why I should use it?

In most cases, when we change a javascript file, even it is just few change, the chunk hash will change, and the client side needs to download the new file, What a waste!

But if we update the file by patching diff, what we need is get a diff infomation and merge it with the local cache

see below:

If client side has no cache or the cache is out of limited count, it will load the full javascript file & cache it.

if there has a cache, it wil load the __fileDiff__ value (which was injected into document by this plugin) to diff file, then patch change & merge it;

Installation

npm install --save-dev diffupdate-webpack-plugin

in you webpack config (use it in production mode)

const DiffUpdate = require('diffupdate-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin'); // need to work with html-webpack-plugin
module.exports = {
  mode: 'production',
  entry: [
    './src/index.js',
    './src/main.js'
  ],
  output: {
    filename:'[name].js',
  },
  plugins: [
    new HtmlWebpackPlugin(),
    new DiffUpdate({
      limit: 4, // default 3
      exclude: ['main', 'index'],
      // include: 'main',
    })
  ]
}

options

exclude String/Array/RegExp - Allow you to skip some files, default false, which means not exclude any files. (do not use it with include option);

include String/Array/RegExp - Allow you to include only some files, default false, which means include all files. (do not use it with exclude option);

limit Number - version cache limit, default 3;

known issue

  • Error when require inline css