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Add is.urlInstance

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This commit is contained in:
Artur 2018-07-09 01:35:26 +03:00
parent 2dbf247fc0
commit 7e71742a0f
2 changed files with 13 additions and 0 deletions
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2
source/index.ts
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@ -1,5 +1,6 @@
import util from 'util';
import symbolObservable from 'symbol-observable';
import {URL} from 'url';
type TypedArray = Int8Array | Uint8Array | Uint8ClampedArray | Int16Array | Uint16Array | Int32Array | Uint32Array | Float32Array | Float64Array;
type Primitive = null | undefined | string | number | boolean | Symbol;
@ -177,6 +178,7 @@ namespace is { // tslint:disable-line:no-namespace
export const dataView = isObjectOfType<DataView>(TypeName.DataView);
export const directInstanceOf = <T>(instance: any, klass: Class<T>): instance is T => Object.getPrototypeOf(instance) === klass.prototype;
export const urlInstance = (value: any): value is URL => !nullOrUndefined(value) && directInstanceOf<URL>(value, URL);
export const truthy = (value: any) => Boolean(value);
export const falsy = (value: any) => !value;

11
source/tests/test.ts
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@ -3,6 +3,7 @@ import net from 'net';
import Stream from 'stream';
import util from 'util';
import tempy from 'tempy';
import {URL} from 'url';
import test, {TestContext, Context} from 'ava';
import {JSDOM} from 'jsdom';
import {Subject, Observable} from 'rxjs';
@ -534,6 +535,16 @@ test('is.directInstanceOf', t => {
t.false(m.directInstanceOf(errorSubclass, Error));
});
test('is.urlInstance', t => {
const url = new URL('https://google.com');
t.true(m.urlInstance(url));
t.false(m.urlInstance({}));
t.false(m.urlInstance(undefined));
t.false(m.urlInstance(null));
});
test('is.truthy', t => {
t.true(m.truthy('unicorn'));
t.true(m.truthy('🦄'));