Smaller bundles with babel 7 #9
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JakeSidSmith
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ghost
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AngryLawyer
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ghost
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Upgrading babel-loader and babel dependencies to new
@babelscoped dependencies allows us to use theuseBuiltIns: 'usage'feature of babel 7.This means that rather than including polyfills for all unsupported APIs (based on our
.browserslistrc), it will only include polyfills for APIs that are actually used.This makes our bundled code considerably smaller.
The raf polyfill (
requestAnimationFrame) is still required as a separate entry.Note: I have also installed
babel-core(the old one) as a dev dependency, as this is still required by jest.https://babeljs.io/docs/en/babel-preset-env#usebuiltins-usage-experimental