所以我终于有时间将使用webpack 1（1.13.0）的grunt任务升级到最新的webpack 4（在这个答案的时候：4.30.1）。
在装载机上出现大量错误之后，让所有工作完成，除了引发错误的缩小:(
我注意到Webpack 1输出.js文件为
var MyLibrary =
/******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId])
/******/ return installedModules[moduleId].exports;
...
但是使用Webpack 4输出是“压缩的”
var MyLibrary=function(e){var n={};function t(a){if(n[a])return n[a].exports;var o=n[a]={i:a,l:!1,exports:{}};return e[a].call(o.exports,o,o.exports,t),o.l=!0,o.exports}return t.m=e,t.c=n,t.d=function(e,n,a){t.o(e,n)||Object.defineProperty(e,n,{enumerable:!0,get:a})},t.r=function(e)...
并使用与Webpack 1完全相同的源代码
> grunt run --client=mylibrary
Running "run" task
↬ Using production configuration
Running "webpack:default" (webpack) task
Version: webpack 1.13.0
Asset Size Chunks Chunk Names
mylibrary.js 450 kB 0 [emitted] main
mylibrary.js.map 545 kB 0 [emitted] main
Running "replace:default" (replace) task
>> 2 replacements in 1 file.
Running "uglify:default" (uglify) task
File dist/mylibrary/mylibrary.min.js created: 450.09 kB → 177.94 kB
>> 1 file created.
Running "compress:default" (compress) task
>> Compressed 1 file
Done.
使用Webpack 4我在尝试缩小文件时收到错误
> grunt run --client=mylibrary
Running "run" task
↬ Using production configuration
Running "webpack" task
56 modules
Running "replace:default" (replace) task
>> 2 replacements in 1 file.
Running "uglify:default" (uglify) task
{ SyntaxError: Unexpected token: name «a», expected: punc «;»
at JS_Parse_Error.get (<anonymous>:71:23)
at formatError (internal/util/inspect.js:817:16)
at formatRaw (internal/util/inspect.js:616:14)
at formatValue (internal/util/inspect.js:511:10)
at inspect (internal/util/inspect.js:191:10)
at Object.formatWithOptions (util.js:84:12)
at Console.(anonymous function) (console.js:191:15)
at Console.log (console.js:202:31)
at E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt-contrib-uglify\tasks\uglify.js:144:17
at Array.forEach (<anonymous>:null:null)
at Object.<anonymous> (E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt-contrib-uglify\tasks\uglify.js:78:16)
at Object.<anonymous> (E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt\lib\grunt\task.js:252:15)
at Object.thisTask.fn (E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt\lib\grunt\task.js:70:16)
at Object.<anonymous> (E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt\lib\util\task.js:294:30)
at Task.runTaskFn (E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt\lib\util\task.js:244:24)
at Task.<anonymous> (E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt\lib\util\task.js:293:12)
at E:\mylibrary\repositories\bitbucket\sc-mylibrary\node_modules\grunt\lib\util\task.js:220:11
at process._tickCallback (internal/process/next_tick.js:61:11)
message: 'Unexpected token: name «a», expected: punc «;»',
filename: 'mylibrary.js',
line: 9,
col: 14469,
pos: 60510 }
>> Uglifying source dist/mylibrary/mylibrary.js failed.
Warning: Uglification failed.
Unexpected token: name «a», expected: punc «;».
Line 9 in dist/mylibrary/mylibrary.js
Use --force to continue.
Aborted due to warnings.
在两个版本中，grunt-contrib-uglify插件的设置方式相同
grunt.initConfig({
uglify: {
options: {
sourceMap: false
},
default: {
files: {
'dist/mylibrary/mylibrary.min.js': ['dist/mylibrary/mylibrary.js']
}
}
},
...
});
插件中唯一的变化是现在它是“4.0.1”而之前我使用的是“1.0.2”......但即使改回来，它也会抛出完全相同的错误...所以我认为它是原始文件。 ..
有没有办法像以前一样输出.js文件？
所以在Webpack 4中
mode: "production"
实际上输出一个无空白版本，很快就会设置为
mode: "development"
它输出正确的美化文件，并从那里很容易跟进错误。