payload-is/lib/esm/collection.js

A comprehensive TypeScript/JavaScript type checking library providing functions to check data types, collections, primitives, and built-in objects

import { getTag } from './type.js';

function isSet(payload) {
  return getTag(payload) === "Set";
}
function isWeakSet(payload) {
  return getTag(payload) === "WeakSet";
}
function isMap(payload) {
  return getTag(payload) === "Map";
}
function isWeakMap(payload) {
  return getTag(payload) === "WeakMap";
}
function isWeakRef(payload) {
  return getTag(payload) === "WeakRef";
}
function isMapEntries(payload) {
  return Array.isArray(payload) && payload.every((item) => Array.isArray(item) && item.length === 2);
}

export { isMap, isMapEntries, isSet, isWeakMap, isWeakRef, isWeakSet };
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