@juigorg/iure-exercitationem-sit

v2.0.20

Published

19 hours ago

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es7 es8 Array.prototype.findLastIndex airbnb readable stylesheet colour Symbol authentication eslintconfig syntaxerror bcrypt irq tslib cli regular endpoint bound crypto parents deepcopy function Array.prototype.findLast contains styled-components ECMAScript 2023 tap queue color findLast ES2022 full Rx status package route own glacier byteLength scheme error names watching classname utilities style beanstalk autoprefixer rfc4122 symbol weakset config gradients css qs console intrinsic tty es5 configurable Object.values args 0 settings streams Underscore deep-clone WeakSet process terminal Observables ECMAScript 3 ECMAScript 2021 fps ECMAScript 2022 getintrinsic format description define rate value computed-types fast-clone flatMap monorepo equal datastructure colors _.extend toStringTag TypeBox ReactiveX read robust efficient proto postcss-plugin loading eslintplugin optimist ECMAScript 6 getOwnPropertyDescriptor variables command stdlib toArray Reflect.getPrototypeOf asserts eslint matches has-own compile less tools banner linewrap patch Microsoft object group make dir ses ender dynamodb CSS ES2019 AsyncIterator es-abstract mkdir Array RegExp.prototype.flags es2016 utility arrays prop ajax fastclone emit libphonenumber StyleSheet sorted jsx immer graphql fastify filter events escape byteOffset env ArrayBuffer mru karma findup negative zero Object.defineProperty io-ts warning chai symlink output find tostringtag merge east-asian-width WeakMap fastcopy slot wordbreak rapid toolkit concat require rmdir signals proxy interrupts argparse look-up wordwrap unicode parsing core-js test valid variables in css https link rgb moment -0 swf yup Set less mixins cloudformation predictable array language ast stable setPrototypeOf side Uint8Array weakmap eventDispatcher once code points yaml getopt forEach callbind Array.prototype.includes worker speed inference less URLSearchParams ES5 tape some protobuf nested css guid findLastIndex ES7 fast-copy ES2021 preserve-symlinks phone lazy Push Int8Array es-shim API javascript pyyaml Uint32Array command-line css cjk task concurrency stringify flat starter fast-deep-clone random ES2020 descriptors classes hot replay validate ES2016 Streams real-time dom date Promise wait css-in-js await zero glob Iterator l10n syntax walk deep-copy cloudfront bundler omit BigUint64Array push logger file system fsevents elb properties mapreduce iteration Object.assign es2018 idle bundling waf typedarrays hash getter type resolve ie iam JSON codes serialization reducer limit recursive higher-order is create package.json Symbol.toStringTag apollo ECMAScript 2015 typed postcss internal telephone immutable hasOwnProperty simpledb less compiler styleguide a11y agent fs redux-toolkit korean hardlinks plugin schema listeners nope ascii up route53 call-bind Uint8ClampedArray runtime ajv dataview npm accessor open ReactiveExtensions amazon chromium number Observable performance mimetypes parser touch exec trimLeft prototype macos jsdiff http bdd call-bound has regular expressions helpers query queueMicrotask minimal ArrayBuffer.prototype.slice bind traverse writable expression visual hooks password native name censor option formatting id RFC-6455 limited from commander module client elm callbound react-testing-library defineProperty busy isConcatSpreadable emoji spinners node symlinks dependencies 256 Array.prototype.contains path setter property multi-package text tc39 es6 shell sham typeof styles jsonpath jest collection.es6 polyfill Object less.js web CSSStyleDeclaration uuid less css lint data YAML full-width serialize mobile elasticache windows rangeerror hookform private data joi aws deep write linux enumerable prefix encryption remove types preprocessor URL ECMAScript 2017 equality ecmascript slice batch deterministic String.prototype.trim flag parse mkdirs figlet columns promise diff error-handling browserslist dom-testing-library awesomesauce tdd readablestream trim handlers ponyfill width loadbalancing whatwg bootstrap less tester xterm ES2018 cloudwatch argv curl .env assertion functions jQuery validation rm -rf drop TypedArray cloudsearch HyBi directory set styling character private which live keys debugger RxJS ECMAScript 2016 react-hook-form generics wget descriptor art ECMAScript 2019 reduce iterator ES2015 toSorted rm -fr redact middleware regexp

@juigorg/iure-exercitationem-sit

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('@juigorg/iure-exercitationem-sit');
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

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@juigorg/iure-exercitationem-sit

v2.0.20

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@juigorg/iure-exercitationem-sit

Example

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