@diotoborg/veritatis-nihil-vero NPM | npm.io

4.11.126 • Published 10 months ago

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Weekly downloads

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License

MIT

Repository

Last release

10 months ago

@diotoborg/veritatis-nihil-vero

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without instanceof, and despite Symbol.toStringTag.

Example

var whichCollection = require('@diotoborg/veritatis-nihil-vero');
var assert = require('assert');

assert.equal(false, whichCollection(undefined));
assert.equal(false, whichCollection(null));
assert.equal(false, whichCollection(false));
assert.equal(false, whichCollection(true));
assert.equal(false, whichCollection([]));
assert.equal(false, whichCollection({}));
assert.equal(false, whichCollection(/a/g));
assert.equal(false, whichCollection(new RegExp('a', 'g')));
assert.equal(false, whichCollection(new Date()));
assert.equal(false, whichCollection(42));
assert.equal(false, whichCollection(NaN));
assert.equal(false, whichCollection(Infinity));
assert.equal(false, whichCollection(new Number(42)));
assert.equal(false, whichCollection(42n));
assert.equal(false, whichCollection(Object(42n)));
assert.equal(false, whichCollection('foo'));
assert.equal(false, whichCollection(Object('foo')));
assert.equal(false, whichCollection(function () {}));
assert.equal(false, whichCollection(function* () {}));
assert.equal(false, whichCollection(x => x * x));
assert.equal(false, whichCollection([]));

assert.equal('Map', whichCollection(new Map()));
assert.equal('Set', whichCollection(new Set()));
assert.equal('WeakMap', whichCollection(new WeakMap()));
assert.equal('WeakSet', whichCollection(new WeakSet()));

Tests

Simply clone the repo, npm install, and run npm test

rangeerror getopt ECMAScript 2023 i18n serialize set keys ES2017 eslintconfig WeakMap ES5 findLastIndex CSS ES2019 deepclone wait argument picomatch protobuf deep-copy jasmine helpers setPrototypeOf buffer form import extra ES2023 regexp es7 warning prune isConcatSpreadable rds sequence arraybuffer debug jshint tdd testing format async link trimStart compare fastclone byte typescript diff getOwnPropertyDescriptor BigInt64Array Reflect.getPrototypeOf call-bound input listeners compiler pipe process regex logging weakmap internal art mocha installer regular expressions ECMAScript 5 slot utility internal slot circular parent xterm make configurable descriptor workspace:*cloudfront symbol computed-types argv ie execute lazy regular-expression spinners banner guid readablestream args promise byteOffset glob array RegExp.prototype.flags drag Array.prototype.findLastIndex toArray whatwg entries express valid break functions properties remove postcss shebang traverse HyBi curl es6 look-up ponyfill transform prop wordbreak validate beanstalk ignore shrinkwrap ses japanese fork tslib scheme estree Int8Array utilities censor stdlib Push stringify setImmediate tape 0 resolve logger bin findup manager Uint8Array path swf east-asian-width optimist ReactiveX loadbalancing Object arrays hasOwn sameValueZero browser URL cloudformation ES3 RxJS redux spawn Array.prototype.filter exec getPrototypeOf toobject phone style Array.prototype.flat efficient characters transpiler regular expression language environments jest css-in-js ArrayBuffer#slice clone task route53 jsdiff -0 schema superstruct callbound function emoji prototype redux-toolkit JSON .env package generics limit which mime-db config Map stringifier enumerable events ansi fast-deep-copy expression ES2018 Uint8ClampedArray serialization symbols hooks minimal Stream columns ES2016 readable side concurrency has identifiers Array.prototype.includes elasticache hookform terminal walking ES

@diotoborg/adipisci-placeat-iure @diotoborg/amet-architecto-est @diotoborg/at-totam-perspiciatis @diotoborg/commodi-voluptatum-libero @diotoborg/delectus-necessitatibus-voluptatum @diotoborg/deserunt-illo-tempora @diotoborg/dicta-recusandae-veniam @diotoborg/dolor-earum-quia @diotoborg/dolor-tempora-fuga @diotoborg/dolores-praesentium-assumenda @diotoborg/eligendi-est-unde @diotoborg/esse-accusantium-ratione @diotoborg/illo-amet-architecto @diotoborg/laudantium-itaque-esse @diotoborg/libero-asperiores-at @diotoborg/neque-inventore-corporis @diotoborg/nostrum-eveniet-officiis @diotoborg/odio-dolores-officia @diotoborg/porro-modi-accusamus @diotoborg/psychic-bassoon @diotoborg/quasi-repellat-odit @diotoborg/qui-ullam-ipsum @diotoborg/quo-dolorem-ducimus @diotoborg/ratione-error-odio @diotoborg/repellat-blanditiis-quis @diotoborg/tempora-voluptas-distinctio @diotoborg/ullam-dignissimos-repudiandae @diotoborg/velit-reiciendis-velit @diotoborg/verbose-robot

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