Ana Sayfa Keşfet Yardım
Giriş Yap
ver2ex
/
hw-react-1
İzle 1
Yıldızla 0
Çatalla 0
Dosyalar Sorunlar 1 Değişiklik İstekleri 0 Wiki
Dal: master
Dallar Biçim İmleri
hw-react-1
/
node_modules
/
which-boxed-primitive
Irina Glushko 2389e7160b HW1 done 3 yıl önce
..
.github 2389e7160b HW1 done 3 yıl önce
test 2389e7160b HW1 done 3 yıl önce
.editorconfig 2389e7160b HW1 done 3 yıl önce
.eslintignore 2389e7160b HW1 done 3 yıl önce
.eslintrc 2389e7160b HW1 done 3 yıl önce
.nycrc 2389e7160b HW1 done 3 yıl önce
CHANGELOG.md 2389e7160b HW1 done 3 yıl önce
LICENSE 2389e7160b HW1 done 3 yıl önce
README.md 2389e7160b HW1 done 3 yıl önce
index.js 2389e7160b HW1 done 3 yıl önce
package.json 2389e7160b HW1 done 3 yıl önce

README.md

which-boxed-primitive Version Badge

dependency status dev dependency status License Downloads

npm badge

Which kind of boxed JS primitive is this? This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and works despite ES6 Symbol.toStringTag.

Example

var whichBoxedPrimitive = require('which-boxed-primitive');
var assert = require('assert');

// unboxed primitives return `null`
// boxed primitives return the builtin constructor name

assert.equal(whichBoxedPrimitive(undefined), null);
assert.equal(whichBoxedPrimitive(null), null);

assert.equal(whichBoxedPrimitive(false), null);
assert.equal(whichBoxedPrimitive(true), null);
assert.equal(whichBoxedPrimitive(new Boolean(false)), 'Boolean');
assert.equal(whichBoxedPrimitive(new Boolean(true)), 'Boolean');

assert.equal(whichBoxedPrimitive(42), null);
assert.equal(whichBoxedPrimitive(NaN), null);
assert.equal(whichBoxedPrimitive(Infinity), null);
assert.equal(whichBoxedPrimitive(new Number(42)), 'Number');
assert.equal(whichBoxedPrimitive(new Number(NaN)), 'Number');
assert.equal(whichBoxedPrimitive(new Number(Infinity)), 'Number');

assert.equal(whichBoxedPrimitive(''), null);
assert.equal(whichBoxedPrimitive('foo'), null);
assert.equal(whichBoxedPrimitive(new String('')), 'String');
assert.equal(whichBoxedPrimitive(new String('foo')), 'String');

assert.equal(whichBoxedPrimitive(Symbol()), null);
assert.equal(whichBoxedPrimitive(Object(Symbol()), 'Symbol');

assert.equal(whichBoxedPrimitive(42n), null);
assert.equal(whichBoxedPrimitive(Object(42n), 'BigInt');

// non-boxed-primitive objects return `undefined`
assert.equal(whichBoxedPrimitive([]), undefined);
assert.equal(whichBoxedPrimitive({}), undefined);
assert.equal(whichBoxedPrimitive(/a/g), undefined);
assert.equal(whichBoxedPrimitive(new RegExp('a', 'g')), undefined);
assert.equal(whichBoxedPrimitive(new Date()), undefined);
assert.equal(whichBoxedPrimitive(function () {}), undefined);
assert.equal(whichBoxedPrimitive(function* () {}), undefined);
assert.equal(whichBoxedPrimitive(x => x * x), undefined);
assert.equal(whichBoxedPrimitive([]), undefined);

Tests

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