@silen/is-promise
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1.0.3 • Public • Published

is-promise

Determine if a value is Promise

install

npm i @silen/is-promise

api

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

usage

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

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

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

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

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Install

npm i @silen/is-promise

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0

Version

1.0.3

License

MIT

Unpacked Size

8.24 kB

Total Files

9

Last publish

Collaborators

  • silentsun