The **@stdlib/symbol‑has‑instance** package exports the built‑in `Symbol.hasInstance` (or `null` in environments without Symbol support). It provides a reliable way for libraries and developers to access the symbol that the `instanceof` operator uses to custom‑define instance checks, enabling consistent behavior across Node.js, browsers, Deno, and other JavaScript runtimes. This utility is aimed at developers building or extending JavaScript classes, especially within the stdlib ecosystem, who need to implement or query custom `instanceof` logic.
Total donated
Undistributed
Share with your subscribers:
Recipients
How the donated funds are distributed
Support the dependencies of stdlib-js/symbol-has-instance
Detect native Symbol.hasInstance support.
Test whether a value has in its prototype chain a specified constructor as a prototype property.
Test if a value is an array.
Test if a value is a symbol.
Define (or modify) an object property.
tap-producing test harness for node and browsers
Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use ca
Minimal TAP output formatter.
Support the repos that depend on this repository
Top contributors
stdlib-bot
7 contributions
Recent events
Kivach works on the Obyte network, and therefore you can track all donations.
No events yet