4.11.126 • Published 11 months ago

@diotoborg/veritatis-nihil-vero v4.11.126

Weekly downloads
-
License
MIT
Repository
github
Last release
11 months ago

@diotoborg/veritatis-nihil-vero Version Badge

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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

rangeerrorgetoptECMAScript 2023i18nserializesetkeysES2017eslintconfigWeakMapES5findLastIndexCSSES2019deepclonewaitargumentpicomatchprotobufdeep-copyjasminehelperssetPrototypeOfbufferformimportextraES2023regexpes7warningpruneisConcatSpreadablerdssequencearraybufferdebugjshinttddtestingformatasynclinktrimStartcomparefastclonebytetypescriptdiffgetOwnPropertyDescriptorBigInt64ArrayReflect.getPrototypeOfcall-boundinputlistenerscompilerpipeprocessregexloggingweakmapinternalartmochainstallerregular expressionsECMAScript 5slotutilityinternal slotcircularparentxtermmakeconfigurabledescriptorworkspace:*cloudfrontsymbolcomputed-typesargvieexecutelazyregular-expressionspinnersbannerguidreadablestreamargspromisebyteOffsetglobarrayRegExp.prototype.flagsdragArray.prototype.findLastIndextoArraywhatwgentriesexpressvalidbreakfunctionspropertiesremovepostcssshebangtraverseHyBicurles6look-upponyfilltransformpropwordbreakvalidatebeanstalkignoreshrinkwrapsesjapaneseforktslibschemeestreeInt8ArrayutilitiescensorstdlibPushstringifysetImmediatetape0resolveloggerbinfindupmanagerUint8Arraypathswfeast-asian-widthoptimistReactiveXloadbalancingObjectarrayshasOwnsameValueZerobrowserURLcloudformationES3RxJSreduxspawnArray.prototype.filterexecgetPrototypeOftoobjectphonestyleArray.prototype.flatefficientcharacterstranspilerregular expressionlanguageenvironmentsjestcss-in-jsArrayBuffer#sliceclonetaskroute53jsdiff-0schemasuperstructcallboundfunctionemojiprototyperedux-toolkitJSON.envpackagegenericslimitwhichmime-dbconfigMapstringifierenumerableeventsansifast-deep-copyexpressionES2018Uint8ClampedArrayserializationsymbolshooksminimalStreamcolumnsES2016readablesideconcurrencyhasidentifiersArray.prototype.includeselasticachehookformterminalwalkingES
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