immutable-array-methods

immutable-array-methods

Immutable versions of normally mutable array methods, such as pop(), push(), splice()

Installation

Download node at nodejs.org and install it, if you haven't already.

npm install immutable-array-methods --save

Usage

var methods = require("immutable-array-methods");

var input = [1, 2, 3];
var result = methods.pop(input, 4);
console.log('pop()');
console.log('input is unchanged', input);
console.log('result', result);

result = methods.splice(input, 1, 1, 'foo');
console.log('splice()');
console.log('input is unchanged', input);
console.log('result', result);

// num() doesnt' return a new array if the values are unchanged
result = methods.map(input, function (num) {
  return num % 2;
});

result = methods.move([1, 2, 3], 0, 1);
console.log('move()');
console.log('input is unchanged', input);
console.log('result', result);

// also available is .push(), .shift(), .unshift(), .set()

Tests

npm install
npm test

Dependencies

None

Dev Dependencies

• ava: Futuristic test runner 🚀
• babel-cli: Babel command line.
• babel-core: Babel compiler core.
• babel-preset-es2015: Babel preset for all es2015 plugins.
• package-json-to-readme: Generate a README.md from package.json contents

License

MIT

Generated by package-json-to-readme