@kollorg/saepe-rem NPM | npm.io

8.8.94 • Published 10 months ago

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License

MIT

Repository

Last release

10 months ago

@kollorg/saepe-rem

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

Getting started

npm install --save @kollorg/saepe-rem

Usage/Examples

var safeConcat = require('@kollorg/saepe-rem');
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

ender browser protobuf callbind ECMAScript 7 array lint ie date web sns eslintconfig buffer restful html autoprefixer sort spec colors modules user-streams description wget Array.prototype.flatten entries ECMAScript 6 debugger AsyncIterator Int8Array form side safe ECMAScript 5 dynamodb directory preprocessor apollo YAML pipe fs lru airbnb copy local once random shell make dir prototype compare regular http rmdir formatting RxJS optimist negative zero traverse Underscore ES2019 coercible exec xml uninstall System.global Rx workspace:*call assign mkdir idle keys from Object.defineProperty hooks some function.length scheme framework protocol-buffers utility pure properties moment source map RFC-6455 Uint16Array sharedarraybuffer shebang east-asian-width es2017 classname graphql rangeerror loading es scheme-validation ReactiveExtensions WebSockets match check atom workflow asserts has glacier eslint-plugin inference window fast-copy ES2020 classes elb transport full-width transpile typed waapi ECMAScript 2021 validation events dataView forEach rds JSON javascript typanion spawn Int16Array regular expression readablestream whatwg fps performance TypeBox Uint32Array three npm react animation ponyfill read stringify property Object.is jsonschema defineProperty immutable file system plugin type toSorted structuredClone ECMAScript 2022 format serialize setter jsdom prop es5 robust global style Array glob Object.values ECMAScript 2017 extra accessibility ECMAScript 2016 Object.getPrototypeOf Uint8Array output jsdiff text redux-toolkit ES2022 $.extend private data deepclone push trimStart positive Object.assign sham merge wait react-testing-library clone request equality karma shared autoscaling offset iterate ES2016 byteLength last WeakSet asterisks hookform character starter speed flags characters mobile cloudtrail quote emoji client tslib TypedArray assertion binaries values string Map walk shim react-hooks slice _.extend fastclone multi-package byteOffset module assert superstruct helper import walking transform let up parents isConcatSpreadable ava computed-types gestures deepcopy ECMAScript 2023 deterministic Object.keys term getopt data amazon which zero typesafe transpiler ES7 core Symbol globalThis resolve iterator map argument Symbol.toStringTag remove RegExp#flags css-in-js dom testing -0 stream warning error includes visual es-shim API omit ES2021 spinners column callbound ArrayBuffer option parent number variables terminal utilities CSSStyleDeclaration globals argv bound global object redux serializer simpledb location superagent aws key [[Prototype]]compiler util.inspect utils typed array execute native sameValueZero generics escape ArrayBuffer.prototype.slice readable flag Object.entries es-abstract yaml WebSocket spring cloudformation proxy vars streams parser libphonenumber manager installer WeakMap jasmine storagegateway dir take rework find-up time pretty

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