it

@use/it

Simple use() function for easy plugin ability.

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MIT

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@use/it

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Simple use() function for easy plugin ability.

Allows default options and plugin specific options.

Accepts module name or path to use() and will require() it for you.

Can assign it to any name.

Table of Contents

  1. Install
  2. Applying use
  3. Example Plugin
  4. Example
  5. Specify Default Options
  6. Specify Plugin Options

Install

npm install --save @use/it

Usage: Applying 'use'

The simplest way to use this module is to require() it and assign it to the use property on your object.

You may use any property name, like, 'load', 'add', 'plugin', or 'enhance'.

Use it by supplying something which can be given to require() to get a function, or, supply a function.

// your thing can be anything we can set `use` on
var thing = getThing()

// get this module which and set it as use().
// or, you can name it anything you want.
thing.use = require('@use/it')

var somePluginName = 'some-name'
var pluginRequired = require('another-plugin')
var pluginFunction = function() { }
var someOptions = {}

// add those plugins to your `thing`:
//  Note: options are optional

// 1. provide a module name or file path for `require()`
thing.use(somePluginName, someOptions)

// 2. provide the module directly when you've already loaded it
thing.use(pluginRequired, { /* with some other options */ })

// 3. provide a function directly as a plugin
thing.use(pluginFunction /* without options */)


// also, you can specify multiple plugins in an array.
// new copy of provided options for each one.
thing.use([
  'some-package',
  './some-module',
  function direct(options) {},
  [
    // an inner array which could have been provided
    // from another package...
  ]
], { shared: 'options' }, __dirname)

Usage: Example Plugin

function plugin(options, thing) {
  // `this` is the `thing`, same as param #2.
  // so, these two lines do the same thing:
  this.blah  = 'example'
  thing.blah = 'example'

  // `options` is the combined options provided to:
  //   1. `thing.use = use.withOptions(defaultOptions)`
  //   2. `thing.use(fn, pluginOptions)`
  // #2 overrides #1.
  // options may be null.
}

Usage: Example

// example `thing` is a behaviorless object
var thing = {}

// add this module so plugins can be applied
thing.use = require('@use/it')

// add a function directly as a plugin.
// it adds a function to the `thing`
thing.use(function addProcess() {
  // `this` is the `thing`
  this.process = function process(string) {
    console.log('I am processing string:', string)
  }
})

// now the `thing` has some added ability.
// the below call will output to the console:
//   I am processing string: blah
thing.process('blah')

// add another function which will alter process()
thing.use(function wrapInput(options) {
  var realProcess = this.process
  var prefix = '['
  var suffix = ']'

  if (options) {
    if (options.prefix) prefix = options.prefix
    if (options.suffix) suffix = options.suffix
  }

  this.process = function wrappedProcess(string) {
    string = prefix + string + suffix
    return realProcess.call(this, string)
  }
})

// now `process()` wraps the string with brackets instead
// the below call will output to the console:
//   I am processing string: [bleh]
thing.process('bleh')

Usage: Specify Default Options

// as above, let's use a behaviorless object
var use = require('@use/it')
var thing = {}

// instead of adding the default `use()` function, let's supply options.
thing.use = use.withOptions({
  // these will be used by `wrapInput`
  prefix: '(',
  suffix: ')'
})

// same as the functions made above
thing.use(addProcess)
thing.use(wrapInput)

thing.process('blarg')
// The `wrapInput` will receive the options we made
// and then use parenthesis instead of brackets.
// the above outputs this to the console:
//    I am processing string: (blarg)

Usage: Specify Plugin Options

// as above, let's use a behaviorless object
var use = require('@use/it')
var thing = {}

// instead of adding the default `use()` function, let's supply options.
thing.use = use.withOptions({
  // these will be overridden by plugin specific options
  prefix: '(',
  suffix: ')'
})

// same as the functions made above
thing.use(addProcess)
// these plugin specific options will override default options
thing.use(wrapInput, {
  prefix: '\'',
  suffix: '\''
})

thing.process('bling')
// The `wrapInput` will receive options combined from the default
// options provided for the `use()` function
// and the plugin specific options provided to the `use()` call,
// So, it will use single quotes instead of brackets or parenthesis.
// the above outputs this to the console:
//    I am processing string: 'bling'

MIT License

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