The babel plugin requires a peer dependency, for the polyfills used in the transpiled code. In Vue CLI v3, the required core-js version is 2.x, it is now upgraded to 3.x. This migration is automated if you upgrade it through vue upgrade babel.
I'm not sure what's gained by the peer dependency. Keeping my babel-loader dependency in sync with whatever is being shipped with Storybook seems like unnecessary and time-consuming maintenance. Isn't it better to avoid the potential of version mismatches in the tree of dependencies?
How to fix: npm WARN [email protected] requires a peer of ? Recently, when attempting to install the gulp-babel package using the npm CLI (“Node package manager”, “Command line interface”) in the Terminal app, I saw a warning saying email@example.com requires a peer of @babel/[email protected]^7.0.0.
What is @babel/preset-env and why do I need it? Every preset is its own NPM dependency that you need to install and configure. Ok, now you are finally ready to learn about babel-preset-env.
yarn install is used to install all dependencies for a project. This is most commonly used when you have just checked out code for a project, or when another developer on the project has added a new dependency that you need to pick up. If you are used to using npm you might be expecting to use --save or --save-dev .
How to set up Jest & Enzyme like a boss? Babel is a major dependency that helps tell webpack how to compile the code. This is a peer dependency for using Jest as well. @babel/polyfil Jest requires a thing called regenerator-runtime, @babel/polyfill comes built-in with it and some other cool features.
Is babel-loader still required with webpack 4.7.x ? I wanted to understand if I need to add babel-loader, babel-core if my project has webpack version 4.7.0?. Initially I did not add babel-loader, and my code which contained ES6 compiled just fine and browsers got ES5.. If I do add babel-loader, I see the following warning in my npm or yarn tool install commands:. warning " > [email protected]" has unmet peer dependency "[email protected]".
There's no one rule. It depends on what the library is and how that peer dependency is used. Sometimes it's 100% necessary, sometimes it's only necessary if you want to use certain features of the library, sometimes it just enhances the library if present.
What is Dev dependency? Dev dependencies are those things that are only used to build your application, but not to run it. Stuff like babel and webpack are only used to build, so they're not included at runtime, whereas you'd need lodash for the app to run.
How to share React Components between Applications via NPM ? Appendix 1: How to use Peer Dependencies#. TODO double check how we are handling externals. As a Component Author you need to manage Peer Dependencies correctly to allow Component Consumers make the best possible final bundle avoiding duplication of dependencies but also some libraries such as React and Emotion don’t work correctly if there are multiple versions of …
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