├── lock.js
├── package.json
└── README.md


/lock.js:
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 1 | window.Rd = window.Rd || {}
 2 | 
 3 | window.Rd.lock = function (asyncFunction) {
 4 |   var ready = true
 5 | 
 6 |   return function (callback) {
 7 |     if (ready) {
 8 |       ready = false
 9 |       asyncFunction(function () {
10 |         callback()
11 |         ready = true
12 |       })
13 |     }
14 |   }
15 | }
16 | 


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/package.json:
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 1 | {
 2 |   "name": "@readable/lock",
 3 |   "version": "0.0.1",
 4 |   "description": "Create a function that can only be executed sequentially",
 5 |   "main": "lock.js",
 6 |   "scripts": {
 7 |     "lint": "standard lock.js README.md",
 8 |     "preversion": "npm run lint"
 9 |   },
10 |   "keywords": [
11 |     "binary",
12 |     "lock",
13 |     "mutex",
14 |     "semaphore",
15 |     "sync",
16 |     "synchronization"
17 |   ],
18 |   "author": "Oleg",
19 |   "license": "MIT",
20 |   "devDependencies": {
21 |     "eslint-plugin-markdown": "^1.0.0-beta.4",
22 |     "standard": "^9.0.2"
23 |   },
24 |   "standard": {
25 |     "envs": [
26 |       "browser"
27 |     ],
28 |     "globals": [
29 |       "Rd"
30 |     ],
31 |     "plugins": [
32 |       "markdown"
33 |     ]
34 |   }
35 | }
36 | 


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/README.md:
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 1 | [![Standard - JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
 2 | 
 3 | # Lock
 4 | 
 5 | Tool to create a trailing edge throttle out of any deferring function.
 6 | 
 7 | Places a lock on a function preventing its simultaneous execution.
 8 | While another execution is due, all other requests to run will be ignored.
 9 | 
10 | ``` js
11 | var throttle = Rd.lock(function (callback) {
12 |   setTimeout(callback, 16)
13 | })
14 | 
15 | window.addEventListener('resize', function () {
16 |   throttle(function () {
17 |     // Update DOM no more than every 16ms (~ 60fps)
18 |   })
19 | })
20 | 
21 | ```
22 | 
23 | ``` js
24 | var throttledRAF = Rd.lock(requestAnimationFrame)
25 | 
26 | window.addEventListener('resize', function () {
27 |   throttledRAF(function () {
28 |     // Update DOM before repaint
29 |   })
30 | })
31 | ```
32 | 


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