cb-buffer

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> A minimalist NodeJS module for callback buffering.

:cloud: Installation

``sh


Using npm

npm install --save cb-buffer

Using yarn

yarn add cb-buffer
`

:clipboard: Example

`js
// Dependencies
const CallbackBuffering = require("cb-buffer");

// Create a new callback buffer
var cb = new CallbackBuffering();

// Callbacks a random unique number after 1 sec
function getUniqueRandomNumberAsync(callback) {
if (cb.check(callback)) { return; }
setTimeout(() => {
debugger
cb.done(Math.random());
}, 1000);
}

// Request the unique number few times.
// It should be unique, and generated once
getUniqueRandomNumberAsync(console.log);
getUniqueRandomNumberAsync(console.log);
getUniqueRandomNumberAsync(console.log);
getUniqueRandomNumberAsync(console.log);
// ... after one second
// => 0.3639475910458714
// => 0.3639475910458714
// => 0.3639475910458714
// => 0.3639475910458714

// After one second (after the random number is found)
// we request it again
setTimeout(() => {
getUniqueRandomNumberAsync(console.log);
// => 0.3639475910458714
}, 1000);
`




:question: Get Help

There are few ways to get help:

1. Please post questions on Stack Overflow. You can open issues with questions, as long you add a link to your Stack Overflow question.
2. For bug reports and feature requests, open issues. :bug:
3. For direct and quick help, you can use Codementor. :rocket:

:memo: Documentation




$3


Creates a new instance of CbBuffer.

The instance will contain methods documented below and the following fields:

- buffer (Array): An array of functions to be called.
- waiting (Boolean): A flag representing the state of the buffer.
- is_done (Boolean): A flag representing the done state (is done or not).
- args (Array): The callback function arguments.

#### Return
- CbBuffer The CbBuffer instance.

$3


Use this function to append the new function and return if needed:

`js
if (cb.check(callback)) { return; }
`

#### Params

- Function fn: The callback function.

#### Return
- Boolean true if thw async function was called already.

$3

Calls the provided function with the callback arguments.

#### Params

- Function fn: The function to call.

$3

CLears the callback array.

$3

Resets the internal data.

$3

Calls all the functions from the buffer.

:yum: How to contribute

Have an idea? Found a bug? See [how to contribute][contributing].

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:dizzy: Where is this library used?

If you are using this library in one of your projects, add it in this list. :sparkles:

- bible.js
- cb-bufferify
- image-parser`

:scroll: License

[MIT][license] © [Ionică Bizău][website]

[license]: /LICENSE
[website]: https://ionicabizau.net
[contributing]: /CONTRIBUTING.md
[docs]: /DOCUMENTATION.md
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