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jsowell-charger-web/jsowell-ui/node_modules/which-collection/README.md
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#	jsowell-ui/.env.development
#	jsowell-ui/.env.staging
#	jsowell-ui/bin/build-sit.bat
#	jsowell-ui/bin/build.bat
#	jsowell-ui/src/api/adapayMember/adapayMember.js
#	jsowell-ui/src/api/pile/merchant.js
#	jsowell-ui/src/router/index.js
#	jsowell-ui/src/views/financial/financeDetail.vue
#	jsowell-ui/src/views/financial/merchant.vue
#	jsowell-ui/src/views/homeIndex/homeIndex.vue
#	jsowell-ui/src/views/login.vue
#	jsowell-ui/src/views/pile/basic/detail.vue
#	jsowell-ui/src/views/pile/station/components/SiteInfo.vue
#	jsowell-ui/src/views/pile/station/detail.vue
#	jsowell-ui/src/views/pile/station/orderReport.vue
2025-06-03 14:26:37 +08:00

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which-collection 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('which-collection');
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