@silen/type
v1.0.1
Published
Type check in TypeScript
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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;