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3.20.0 - 2021.12.16
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@zloirock zloirock released this 15 Dec 19:12
· 2425 commits to master since this release
v3.20.0
29590d0
  • Added structuredClone method from the HTML spec, see MDN
    • Includes all cases of cloning and transferring of required ECMAScript and platform types that can be polyfilled, for the details see the caveats
    • Uses native structured cloning algorithm implementations where it's possible
    • Includes the new semantic of errors cloning from html/5749
  • Added DOMException polyfill, the Web IDL spec, see MDN
    • Includes DOMException and its attributes polyfills with fixes of many different engines bugs
    • Includes DOMException#stack property polyfill in engines that should have it
    • Reuses native DOMException implementations where it's possible (for example, in old NodeJS where it's not exposed as global)
  • Added support of cause on all Error types
  • Added Error.prototype.toString method polyfill with fixes of many different bugs of JS engines
  • Added Number.prototype.toExponential method polyfill with fixes of many different bugs of JS engines
  • Array grouping proposal:
    • Moved to stage 3
    • Added Array.prototype.groupByToMap method
    • Removed @@species support
  • Added change Array by copy stage 2 proposal:
    • Array.prototype.toReversed
    • Array.prototype.toSorted
    • Array.prototype.toSpliced
    • Array.prototype.with
    • %TypedArray%.prototype.toReversed
    • %TypedArray%.prototype.toSorted
    • %TypedArray%.prototype.toSpliced
    • %TypedArray%.prototype.with
  • Added Iterator.prototype.toAsync method from the iterator helpers stage 2 proposal
  • Array.fromAsync proposal moved to stage 2
  • Added String.cooked stage 1 proposal:
  • Added Function.prototype.unThis stage 0 proposal
  • Added Function.{ isCallable, isConstructor } stage 0 proposal:
    • Function.isCallable
    • Function.isConstructor
  • Added a workaround of most cases breakage modern String#at after loading obsolete String#at proposal module, #1019
  • Fixed Array.prototype.{ values, @@iterator }.name in V8 ~ Chrome 45-
  • Fixed validation of typed arrays in typed arrays iteration methods in V8 ~ Chrome 50-
  • Extension of the API, #1012
    • Added a new core-js/actual/** namespace
    • Added entry points for each finished post-ES6 proposal
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