不能通过Webpack要求Popper

时间:2019-10-18 15:10:47

标签: javascript ruby-on-rails webpack webpacker

我正在尝试将JavaScript文件移至Webpack。我对Webpack不太熟悉,因此不确定我是否正确编写了其中的任何代码。我正在尝试加载jquery-ui,popper和bootstrap4。但是,在需要public OptionalDouble computeMean(double[] grades) { Objects.requireNonNull(grades); if (grades.length == 0) { return OptionalDouble.empty(); } ... return OptionalDouble.of(result); } 时出现错误。请注意,我将Wepacker gem用于Ruby on Rails。

我在我的environment.js文件中包含了以下代码,以在每个文件中自动包含jQuery。

Popper

这部分有效。因此,我从那里开始了const { environment } = require('@rails/webpacker') const webpack = require('webpack') environment.plugins.append('Provide', new webpack.ProvidePlugin({ $: 'jquery', jQuery: 'jquery' })) module.exports = environment

然后在我的/pack/application.js文件中加入yarn add jquery-ui

从我的js文件中,以下代码将打印到我的控制台:

require('jquery-ui')

此后,我尝试安装$(document).ready(function(){ if (jQuery.ui) { console.log("loaded"); } }); 并要求使用popper

然后从我的yarn add popper函数内部调用popper时出现错误:

document.ready

错误:

$(document).ready(function(){

    console.log(window.Popper)

});

这是我的pack / application.js文件

Uncaught Error: Module build failed (from ./node_modules/babel-loader/lib/index.js):
SyntaxError: /home/ubuntu/environment/node_modules/path-platform/path.js: 'return' outside of function (32:2)

  30 | if (_path.posix) {
  31 |   module.exports = _path;
  32 |   return;
     |   ^
  33 | }
  34 | 
  35 | // resolves . and .. elements in a path array with directory names there
    at Parser.raise (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:6420)
    at Parser.parseReturnStatement 
(home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10370)
    at Parser.parseStatementContent 
(home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10057)
    at Parser.parseStatement (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10009)
    at Parser.parseBlockOrModuleBlockBody 
(home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10585)
    at Parser.parseBlockBody (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10572)
    at Parser.parseBlock (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10556)
    at Parser.parseStatementContent 
    (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10085)
    at Parser.parseStatement (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10009)
    at Parser.parseIfStatement 
    (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10363)
    at Parser.parseStatementContent 
    (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10054)
    at Parser.parseStatement (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10009)
    at Parser.parseBlockOrModuleBlockBody 
    (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10585)
at Parser.parseBlockBody (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:10572)
at Parser.parseTopLevel (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:9940)
at Parser.parse (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:11447)
at parse (home/ubuntu/environment/node_modules/@babel/parser/lib/index.js:11483)
at parser (home/ubuntu/environment/node_modules/@babel/core/lib/transformation/normalize-file.js:168)
at normalizeFile (home/ubuntu/environment/node_modules/@babel/core/lib/transformation/normalize-file.js:102)
at runSync (home/ubuntu/environment/node_modules/@babel/core/lib/transformation/index.js:44)
at runAsync (home/ubuntu/environment/node_modules/@babel/core/lib/transformation/index.js:35)
at process.nextTick (home/ubuntu/environment/node_modules/@babel/core/lib/transform.js:34)
at process._tickCallback (internal/process/next_tick.js:61)
at Object../node_modules/path-platform/path.js (index.js:82)
at __webpack_require__ (bootstrap:19)
at Object.<anonymous> (index.js:1)
at Object../node_modules/parents/index.js (index.js:39)
at __webpack_require__ (bootstrap:19)
at Object.<anonymous> (index.js:19)
at Object../node_modules/module-deps/index.js (index.js:623)
at __webpack_require__ (bootstrap:19)
at Object.<anonymous> (index.js:3)
at Object../node_modules/browserify/index.js (index.js:846)

1 个答案:

答案 0 :(得分:1)

我做了同样的事情,然后才意识到问题出在哪里。 popper是Node中的一种高级浏览器测试库。引导程序取决于popper.js,这是浏览器的工具提示弹出库。

要解决此问题,您需要:

yarn remove popper
yarn add popper.js