Custom build ⬆įor some cases could be useful to exclude some core-js features or generate a polyfill for target engines. Also, if you change the default behaviour, even core-js internals may not work correctly.

from methods on collection constructors ⬆ compositeKey and compositeSymbol ⬆ Array filtering ⬆ Array deduplication ⬆ Getting last item from Array ⬆ omString ⬆ Math extensions ⬆ Math.signbit ⬆ oked ⬆ ⬆ Symbol.matcher for pattern matching ⬆ Stage 0 proposals ⬆ ⬆ Function. String#replaceAll ⬆ / ⬆ RegExps (dotAll) flag ⬆ RegExp named capture groups ⬆ Promise.allSettled ⬆ Promise.any ⬆ ⬆ Symbol.asyncIterator for asynchronous iteration ⬆ ⬆ Well-formed JSON.stringify ⬆ Stage 3 proposals ⬆ Iterator helpers ⬆ Caveats: ⬆ omAsync ⬆ Array grouping ⬆ New Set methods ⬆ JSON.parse source text access ⬆ and friends ⬆ Explicit Resource Management ⬆ Well-formed unicode strings ⬆ Stage 2 proposals ⬆ AsyncIterator helpers ⬆ Caveats: ⬆ Iterator.range ⬆ ⬆ Array.isTemplateObject ⬆ dent ⬆ Async Explicit Resource Management ⬆ Symbol predicates ⬆ tadata for decorators metadata proposal ⬆ Stage 1 proposals ⬆ Observable ⬆ New collections methods ⬆.

I highly recommend reading this: So, what's next? babel and a look into the future Raising funds Index Usage ⬆ Installation: ⬆ postinstall message ⬆ CommonJS API ⬆ Caveats when using CommonJS API: ⬆ CommonJS and prototype methods without global namespace pollution ⬆ Babel ⬆ ⬆ ⬆ ⬆ swc ⬆ Configurable level of aggressiveness ⬆ Custom build ⬆ Supported engines and compatibility data ⬆ Features: ⬆ ECMAScript ⬆ ECMAScript: Object ⬆ ECMAScript: Function ⬆ ECMAScript: Error ⬆ ECMAScript: Array ⬆ ECMAScript: String and RegExp ⬆ ECMAScript: Number ⬆ ECMAScript: Math ⬆ ECMAScript: Date ⬆ ECMAScript: Promise ⬆ Unhandled rejection tracking ⬆ ECMAScript: Symbol ⬆ Caveats when using Symbol polyfill: ⬆ ECMAScript: Collections ⬆ Map ⬆ Set ⬆ WeakMap ⬆ WeakSet ⬆ Caveats when using collections polyfill: ⬆ ECMAScript: Typed Arrays ⬆ Caveats when using typed arrays polyfills: ⬆ ECMAScript: Reflect ⬆ ECMAScript: JSON ⬆ ECMAScript: globalThis ⬆ ECMAScript proposals ⬆ Finished proposals ⬆ globalThis ⬆ Relative indexing method ⬆ ⬆ / ⬆ Array find from last ⬆ Change Array by copy ⬆ Object.values / Object.entries ⬆ omEntries ⬆ Object.getOwnPropertyDescriptors ⬆ Accessible ⬆ String padding ⬆ String#matchAll ⬆.

Javascript array includes