array-proto-ext

A functional extension directly adds to Array.prototype

• WARNING: Importing this module would modify some properties of Array.prototype . Ensure that you know all side effects before import.

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features

• Strong type definition

  Fully written by TypeScript.

• Webpack support

  You can use it in any Webpack project like Vue CLI.

• High performance

  • Some functions use the the implementations of Lodash .
  • Use ES2015 generator function and for ... of ... expression(target to ES6) to decrease the useless for loop.

• Import just ONCE in the entry point

  Directly add functions to Array.prototype

• Conditional version of query functions, like countIf, sumBy, etc.

• Unit test support

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example

import "array-proto-ext";

let arr = Array.prototype.range(2, 10);
// arr = [2, 3, 4, 5, 6, 7, 8, 9, 10]
let evenCount = arr.countIf(x => x % 2 === 0);
// evenCount = 5
let items = [
    { id: "100001", itemId: 1, name: "item A" },
    { id: "100002", itemId: 2, name: "item B" },
    { id: "100003", itemId: 1, name: "another item A"},
];
let ownedIds = items.distinct(x => x.itemId)
                    .map(x => x.itemId);
// ownedIds = [1, 2]