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I am following along a tutorial from Udemy, and we've just downloaded babel. Everything was working fine until I downloaded babel-polyfill and tried to integrate it.
Currently this is my webpack and babelrc files: Webpack & Babel and this is what the error looks like on the command line: Command Line Error.
Does anyone know what I'm doing wrong? Thanks in advance for all your help!
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The key error there is Cannot resolve babel-polyfill in... This means webpack isn't able to find that module in your node_modules folder. Check to make sure it's there in node_modules/babel-polyfill and if not install it with npm install --save babel-polyfill .
core-js is currently replacing bable-polyfill. You do not have to set it anywhere except for the . babelrc file I have a question, why do you duplicate libraries you have @babel/polyfill and babel-pollyfill the same applies to @babel/preset-env and babel-preset-en .
Babel includes a polyfill that includes a custom regenerator runtime and core-js. This will emulate a full ES2015+ environment (no < Stage 4 proposals) and is intended to be used in an application rather than a library/tool. (this polyfill is automatically loaded when using babel-node ).
To include the polyfill you need to require it at the top of the entry point to your application. Make sure it is called before all other code/require statements!
The key error there is Cannot resolve babel-polyfill in...
This means webpack isn't able to find that module in your node_modules folder. Check to make sure it's there in node_modules/babel-polyfill and if not install it with npm install --save babel-polyfill.
If it's there and you still get this error, there are a few possible reasons.
Make sure the permissions on the files/folders are ok.
Check that you don't have any NODE_PATH env var set or there's no modulesDirectory setting in your webpack.config.js set that would cause webpack to look in the wrong directory.
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