The es-set package provides an ESnext spec-compliant `Set` shim/polyfill that works in ES3-supported environments. It implements the es-shims API interface and complies with the ECMAScript specification for Set objects. This project is for developers who need Set functionality in older JavaScript environments that don't natively support ES6 Set objects.
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Support the dependencies of es-shims/set
Robustly `.call.bind()` a function
Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.
Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.
ECMAScript spec abstract operations.
An ES-spec-compliant Map shim/polyfill/replacement that works as far down as ES3
A helper to optimistically set Symbol.toStringTag, when possible.
A better forEach
Does this JS environment support the `name` property on functions?
Get and robustly cache all JS language-level intrinsics at first require time
ECMAScript spec-compliant polyfill/shim for `globalThis`
`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.
Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.
Determine if the JS environment has Symbol support. Supports spec, or shams.
ES spec-like internal slots
Iterate any iterable JS value. Works robustly in all environments, all versions.
ES2017 spec-compliant Object.entries shim.
Firefox 17-26 iterators throw a StopIteration object to indicate "done". This normalizes it.
Loosely test a package's compliance with the es-shim API
My shareable eslint config
A robust & optimized `Array.from` polyfill, based on the ECMAScript 6 specification.
Command line tool for generating a changelog from git tags and commit history
Convert encodings, uses iconv-lite
Get an iterator for any JS language value. Works robustly across all environments, all versions.
Does the current JS environment have strict mode? ES5+ should; but let's not assume.
Detect if we were run as a result of `npm publish`
Command line tool for creating or updating a .npmignore file based on .gitignore.
the Istanbul command line interface
string representations of objects in node and the browser
An Object.keys replacement, in case Object.keys is not available. From https://github.com/es-shims/es5-shim
Ensure that when you `npm publish`, the "latest" tag is only set for the truly latest version.
tap-producing test harness for node and browsers
Support the repos that depend on this repository
Top contributors
ljharb
66 contributions
nicolo-ribaudo
4 contributions
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