@zerodep/is-symbol

A simple, performant utility to determine if a value is a Symbol.

Full documentation is available at the zerodep.app page.

Examples

All @zerodep packages support both ESM and CJS.

import { isSymbol } from '@zerodep/is-symbol';
// or
const { isSymbol } = require('@zerodep/is-symbol');

Positive Response

import { isSymbol } from '@zerodep/app';

isSymbol(Symbol()); // true

Negative Response

isSymbol(['a', 'b', 'c']); // false
isSymbol(1000n); // false
isSymbol(true); // false
isSymbol(new Date()); // false
isSymbol(''); // false
isSymbol(new Error('message')); // false
isSymbol(3.14); // false
isSymbol(() => 'function'); // false
isSymbol(42); // false
isSymbol(
  new Map([
    ['a', 1],
    ['b', 2],
  ])
); // false
isSymbol(null); // false
isSymbol({ an: 'object' }); // false
isSymbol(new Promise(() => {})); // false
isSymbol(/[regex]+/gi); // false
isSymbol(new Set([1, 2, 3])); // false
isSymbol('a string'); // false
isSymbol(new Int32Array(2)); // false
isSymbol(undefined); // false