@silen/is-number

is-number

Determine if a value is Number

install

npm i @silen/is-number

api

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

usage

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

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

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

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

others

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