is-map

Determine if a value is Map

install

npm i @silen/is-map

api

• declare function isMap(val: any): boolean;

usage

const { isMap } = require('@silen/is-map');
// or
import { isMap } from '@silen/is-map';

console.log(isMap(new Buffer(4)));
console.log(isMap(Buffer.alloc(4)));
console.log(isMap(undefined));
console.log(isMap(null));
console.log(isMap(''));
console.log(isMap(true));
console.log(isMap(0));
console.log(isMap(1));
console.log(isMap(1.0));
console.log(isMap('string'));
console.log(isMap({}));
console.log(isMap(function foo() {}));
console.log(isMap(Symbol()));
console.log(isMap(new Set));
console.log(isMap(new Map));
console.log(isMap(new WeakMap));
console.log(isMap(new WeakSet));

// or
console.log(window.Type.isMap(new WeakSet));

This is a demo for testing the usage of isMap from @silen/is-map module. You can try the others and do likewise.

others

• type
• isArray
• isUndefined
• isNull
• isBoolean
• isBuffer
• isArrayBuffer
• isFormData
• isArrayBufferView
• isString
• isNumber
• isObject
• isPlainObject
• isDate
• isArguments
• isFile
• isBlob
• isFunction
• isSymbol
• isRegExp
• isInt8Array
• isUint8Array
• isUint8ClampedArray
• isInt16Array
• isUint16Array
• isInt32Array
• isUint32Array
• isFloat32Array
• isFloat64Array
• isError
• isPromise
• isSet
• isWeakSet
• isWeakMap
• isStream
• isURLSearchParams