This project, `es-iterator-helpers`, provides a polyfill for ESnext iterator helpers, making them compatible with older JavaScript environments as far back as ES3. It's designed for developers who need to use modern iterator methods in legacy browsers or Node.js versions that don't natively support them. The library shims various iterator methods, such as `map`, `filter`, and `reduce`, allowing for seamless iteration and data processing in a wide range of environments.
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Support the dependencies of es-shims/iterator-helpers
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.
A simple cache for a few of the JS Error constructors.
A helper to optimistically set Symbol.toStringTag, when possible.
Implementation of Function.prototype.bind
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.
Does this environment have the ability to get the [[Prototype]] of an object on creation with `__proto__`?
Determine if the JS environment has Symbol support. Supports spec, or shams.
ES spec-like internal slots
`Iterator.prototype`, or a shared object to use.
ES Math-related intrinsics and helpers, robustly cached.
Loosely test a package's compliance with the es-shim API
My shareable eslint config
Command line tool for generating a changelog from git tags and commit history
Convert encodings, uses iconv-lite
Fixtures of ES values, for testing purposes
Import with sanity.
Evaluates javascript code blocks from markdown files.
A better forEach
Does this JS environment support the `name` property on functions?
Does the current JS environment have strict mode? ES5+ should; but let's not assume.
Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.
Detect if we were run as a result of `npm publish`
Iterate any JS iterator. Works robustly in all environments, all versions.
Returns an arbitrary generator function, or undefined if generator syntax is unsupported.
Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.
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
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
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