@wemnyelezxnpm/nobis-blanditiis-eum

1.0.0 • Public • Published

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Array.prototype.concat, but made safe by ignoring Symbol.isConcatSpreadable

Getting started

npm install --save @wemnyelezxnpm/nobis-blanditiis-eum

Usage/Examples

var safeConcat = require('@wemnyelezxnpm/nobis-blanditiis-eum');
var assert = require('assert');

assert.deepEqual([].concat([1, 2], 3, [[4]]), [1, 2, 3, [4]], 'arrays spread as expected with normal concat');
assert.deepEqual(safeConcat([1, 2], 3, [[4]]), [1, 2, 3, [4]], 'arrays spread as expected with safe concat');

String.prototype[Symbol.isConcatSpreadable] = true;
assert.deepEqual([].concat('foo', Object('bar')), ['foo', 'b', 'a', 'r'], 'spreadable String objects are spread with normal concat!!!');
assert.deepEqual(safeConcat('foo', Object('bar')), ['foo', Object('bar')], 'spreadable String objects are not spread with safe concat');

Array.prototype[Symbol.isConcatSpreadable] = false;
assert.deepEqual([].concat([1, 2], 3, [[4]]), [[], [1, 2], 3, [[4]]], 'non-concat-spreadable arrays do not spread with normal concat!!!');
assert.deepEqual(safeConcat([1, 2], 3, [[4]]), [1, 2, 3, [4]], 'non-concat-spreadable arrays still spread with safe concat');

Tests

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

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Install

npm i @wemnyelezxnpm/nobis-blanditiis-eum

Weekly Downloads

0

Version

1.0.0

License

MIT

Unpacked Size

16.8 kB

Total Files

10

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Collaborators

  • mol86237