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When you have a dependency that does not export itself properly, you can use the exports-loader to force it to export the pieces of the file that you need.
Install:
npm i -D exports-loader
Add exports-loader to the module you want:
module: { loaders: [ ... { test: require.resolve(‘./src/js/non_node_modules/left-pad‘), loaders: [ ‘exports?leftPad‘, ], } ],
There is no problem, the module still exists on ‘window‘ object, we want it be es6 module which not exists on ‘window‘ object.
Install:
npm i -D imports-loader
Add imports-loader the the module:
module: { loaders: [ ... { test: require.resolve(‘./src/js/non_node_modules/left-pad‘), loaders: [ ‘imports?window=>{}‘, ‘exports?leftPad‘, ], } ], },
Here it sets ‘windows‘ object to empty object to clean the left-pad module.
[Webpack 2] Import a non-ES6 module with Webpack
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原文地址：http://www.cnblogs.com/Answer1215/p/5615671.html
