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concat-maps's Introduction

concat-maps Build Status NPM MIT

Efficiently concatenate ES6 Maps

Installation

npm install concat-maps --save

Usage

import { concat } from 'concat-maps'

const a = new Map
a.set('a', 1)

const b = new Map
b.set('b', 2)

const c = concat(a, b)
// Map {
//   "a" => 1,
//   "b" => 2
// }

Tests

npm test

License

MIT

concat-maps's People

Contributors

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Stargazers

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Watchers

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concat-maps's Issues

Unnecessary array allocation

Array.from call in concat2 function creates a new temporary array which is used only to call forEach, it doesn't seem efficient. Why not to iterate map2 itself with for..of syntax?

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