https://github.com/floatdrop/snap-context

Snapshot and restore context variables
https://github.com/floatdrop/snap-context

Last synced: about 1 month ago
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Snapshot and restore context variables

• Host: GitHub
• URL: https://github.com/floatdrop/snap-context
• Owner: floatdrop
• Created: 2014-07-22T16:15:30.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-07-31T04:03:18.000Z (over 10 years ago)
• Last Synced: 2024-10-16T09:32:03.747Z (3 months ago)
• Language: JavaScript
• Homepage:
• Size: 172 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

        
# snap-context [![NPM version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency Status][depstat-image]][depstat-url]

> Manage context with ease

## Usage

```js

var Context = require('proto-context');

var ctx = new Context();

ctx.set('value', 'first version');  // console.log(ctx.get('value')) -> 'first version'

ctx.snapshot();

ctx.set('value', 'second version'); // console.log(ctx.get('value')) -> 'second version'

ctx.restore();

console.log(ctx.get('value')); // -> 'first version' 

```

## API

## new Context

Creates context object with methods:

### Context.set(key, value)

Sets key for value in current context.

### Context.get(key)

Gets value for key in current (or previous) context.

### Context.snapshot(ctx)

Creates new Object and add it to `ctx` prototype.

### Context.restore(ctx)

Removes created Object from prototype chain of ctx.

## Benchmark results

Benchmarking set -> snapshot -> get -> restore pattern:

```js

                      Short stack

         978,292 op/s » Stack on array

         596,183 op/s » Stack on list

                      Long stack

         250,730 op/s » Stack on array

         253,066 op/s » Stack on list

                      Very long stack

          33,710 op/s » Stack on array

          37,891 op/s » Stack on list

```

[npm-url]: https://npmjs.org/package/snap-context

[npm-image]: http://img.shields.io/npm/v/snap-context.svg

[travis-url]: https://travis-ci.org/floatdrop/snap-context

[travis-image]: http://img.shields.io/travis/floatdrop/snap-context.svg

[depstat-url]: https://david-dm.org/floatdrop/snap-context

[depstat-image]: https://david-dm.org/floatdrop/snap-context.svg?theme=shields.io