History

bansh_dml 540cc4e467 Initial Commit		2025-01-07 10:44:59 +05:30
..
.github	Initial Commit	2025-01-07 10:44:59 +05:30
test	Initial Commit	2025-01-07 10:44:59 +05:30
.eslintrc	Initial Commit	2025-01-07 10:44:59 +05:30
.nycrc	Initial Commit	2025-01-07 10:44:59 +05:30
CHANGELOG.md	Initial Commit	2025-01-07 10:44:59 +05:30
index.d.ts	Initial Commit	2025-01-07 10:44:59 +05:30
index.js	Initial Commit	2025-01-07 10:44:59 +05:30
LICENSE	Initial Commit	2025-01-07 10:44:59 +05:30
package.json	Initial Commit	2025-01-07 10:44:59 +05:30
README.md	Initial Commit	2025-01-07 10:44:59 +05:30
tsconfig.json	Initial Commit	2025-01-07 10:44:59 +05:30

README.md

safe-array-concat

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

Getting started

npm install --save safe-array-concat

Usage/Examples

var safeConcat = require('safe-array-concat');
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