type

typescript type check

install

npm i @silen/type

usage

const { isBuffer } = require('@silen/type');
// or
import { isBuffer } from '@silen/type';

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

// or
console.log(window.Type.isBuffer(''));

This is a demo for testing the usage of isBuffer from type module. You can try the others and do likewise.

others

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

api

• declare function isArray(val: any): boolean;
• declare function isUndefined(val: any): boolean;
• declare function isNull(val: any): boolean;
• declare function isBoolean(val: any): boolean;
• declare function isBuffer(val: any): boolean;
• declare function isArrayBuffer(val: any): boolean;
• declare function isFormData(val: any): boolean;
• declare function isArrayBufferView(val: any): boolean;
• declare function isString(val: any): boolean;
• declare function isNumber(val: any): boolean;
• declare function isObject(val: any): boolean;
• declare function isPlainObject(val: any): boolean;
• declare function isDate(val: any): boolean;
• declare function isArguments(val: any): boolean;
• declare function isFile(val: any): boolean;
• declare function isBlob(val: any): boolean;
• declare function isFunction(val: any): boolean;
• declare function isSymbol(val: any): boolean;
• declare function isRegExp(val: any): boolean;
• declare function isInt8Array(val: any): boolean;
• declare function isUint8Array(val: any): boolean;
• declare function isUint8ClampedArray(val: any): boolean;
• declare function isInt16Array(val: any): boolean;
• declare function isUint16Array(val: any): boolean;
• declare function isInt32Array(val: any): boolean;
• declare function isUint32Array(val: any): boolean;
• declare function isFloat32Array(val: any): boolean;
• declare function isFloat64Array(val: any): boolean;
• declare function isError(val: any): boolean;
• declare function isPromise(val: any): boolean;
• declare function isSet(val: any): boolean;
• declare function isWeakSet(val: any): boolean;
• declare function isMap(val: any): boolean;
• declare function isWeakMap(val: any): boolean;
• declare function isStream(val: any): boolean;
• declare function isURLSearchParams(val: any): boolean;