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ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

Colored symbols for various log levels. Example: `✔︎ Success`

Determine if a value is an ES6 Symbol or not.

Unicode symbols with fallbacks for older terminals

Gets the description of a Symbol. Handles `Symbol()` vs `Symbol('')` properly when possible.

Get the real length of a string - by correctly counting astral symbols and ignoring ansi escape codes

Turn any collection of objects into its own efficient tree or linked list using Symbol

Symbol.observable ponyfill

Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives.

Robustly get an object's own property keys (strings and symbols), including non-enumerables when possible

Assign the enumerable es6 Symbol properties from one or more objects to the first object passed on the arguments. Can be used as a supplement to other extend, assign or merge methods as a polyfill for the Symbols part of the es6 Object.assign method.

ECMAScript 6 Symbol polyfill

micromark utility with symbols

Returns an array of all enumerable symbol properties found directly upon a given object

Returns `true` if the value is a primitive.

Iterate any JS iterator. Works robustly in all environments, all versions.

Iterate any iterable JS value. Works robustly in all environments, all versions.

Spec-compliant shim for Symbol.prototype.description proposal.

An ESnext spec-compliant shim/polyfill/replacement for all Well-Known Symbols that works in any environment with Symbols.