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core-js-builder
Advanced tools
Changelog
Set
methods proposal:
Set.prototype.intersection
Set.prototype.union
Set.prototype.difference
Set.prototype.symmetricDifference
Set.prototype.isSubsetOf
Set.prototype.isSupersetOf
Set.prototype.isDisjointFrom
es.
namespace modules, /es/
and /stable/
namespaces entriesMath.sumPrecise
stage 2.7 proposal:
Math.sumPrecise
Promise.try
proposal:
Promise.try
RegExp.escape
stage 2 proposal:
Symbol.customMatcher
Symbol.customMatcher
Symbol.customMatcher
well-known symbol from the pattern matching proposal is also used in the exactors proposal, added an entry also for this proposalURL.parse
, url/825URL.parse
added and marked as supported from FF 126URL.parse
added and marked as supported from Bun 1.1.4URL.canParse
fixed and marked as supported from Bun 1.1.0Set
methods fixed in JavaScriptCore and marked as supported from Bun 1.1.1Readme
For some cases could be useful to exclude some core-js
features or generate a polyfill for target engines. This API helps conditionally include or exclude certain parts of core-js
and build for targets. modules
, exclude
and targets
options are specified in the core-js-compat
format.
import builder from 'core-js-builder';
const bundle = await builder({
// entry / module / namespace / an array of them, by default - all `core-js` modules
modules: ['core-js/actual', /^esnext\.reflect\./],
// a blacklist of entries / modules / namespaces, by default - empty list
exclude: [/^es\.math\./, 'es.number.constructor'],
// optional browserslist or core-js-compat format query
targets: '> 0.5%, not dead, ie 9-11',
// shows summary for the bundle, disabled by default
summary: {
// in the console, you could specify required parts or set `true` for enable all of them
console: { size: true, modules: false },
// in the comment in the target file, similarly to `summary.console`
comment: { size: false, modules: true },
},
// output format, 'bundle' by default, can be 'cjs' or 'esm', and in this case
// the result will not be bundled and will contain imports of required modules
format: 'bundle',
// optional target filename, if it's missed a file will not be created
filename: PATH_TO_MY_COREJS_BUNDLE,
});
ℹ️ When using TypeScript, make sure to set esModuleInterop
to true
.
FAQs
core-js builder
The npm package core-js-builder receives a total of 24,441 weekly downloads. As such, core-js-builder popularity was classified as popular.
We found that core-js-builder demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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