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Simple API for managing options in JavaScript applications.

Install

Install with npm:

$ npm install --save option-cache

Example app

Use options-cache in your javascript application:

var util = require('util');
var Options = require('options-cache');

function App(options) {
  Options.call(this, options);
  this.init();
}

util.inherits(App, Options);

App.prototype.init = function() {
  this.option('cwd', process.cwd());
  this.option('foo', 'bar');
};

App.prototype.a = function(value) {
  this.enable(value);
};

App.prototype.b = function(value) {
  if (this.enabled(value)) {
    // do something
  } else {
    // do something else
  }
};

API

Options

Create a new instance of Options.

Params

Example

var app = new Options();

.option

Set or get a default value. Defaults are cached on the .defaults object.

Params

Example

app.default('admin', false);
app.default('admin');
//=> false

app.option('admin');
//=> false

app.option('admin', true);
app.option('admin');
//=> true

.option

Set or get an option.

Params

Example

app.option('a', true);
app.option('a');
//=> true

Params

Example

app.option('admin', true);
console.log(app.either('admin', false));
//=> true

console.log(app.either('collaborator', false));
//=> false

Params

Example

app.option('a', 'b');

app.fillin('a', 'z');
app.fillin('x', 'y');

app.option('a');
//=> 'b'
app.option('x');
//=> 'y'

.hasOption

Return true if options.hasOwnProperty(key)

Params

Example

app.hasOption('a');
//=> false
app.option('a', 'b');
app.hasOption('a');
//=> true

.enable

Enable key.

Params

Example

app.enable('a');

.disable

Disable key.

Params

Example

app.disable('a');

.enabled

Check if prop is enabled (truthy).

Params

Example

app.enabled('a');
//=> false

app.enable('a');
app.enabled('a');
//=> true

.disabled

Check if prop is disabled (falsey).

Params

Example

app.disabled('a');
//=> true

app.enable('a');
app.disabled('a');
//=> false

.isTrue

Returns true if the value of prop is strictly true.

Params

Example

app.option('a', 'b');
app.isTrue('a');
//=> false

app.option('c', true);
app.isTrue('c');
//=> true

app.option({a: {b: {c: true}}});
app.isTrue('a.b.c');
//=> true

.isFalse

Returns true if the value of key is strictly false.

Params

Example

app.option('a', null);
app.isFalse('a');
//=> false

app.option('c', false);
app.isFalse('c');
//=> true

app.option({a: {b: {c: false}}});
app.isFalse('a.b.c');
//=> true

.isBoolean

Return true if the value of key is either true or false.

Params

Example

app.option('a', 'b');
app.isBoolean('a');
//=> false

app.option('c', true);
app.isBoolean('c');
//=> true

Release history

v4.0.0

Breaking changes

About

Related projects

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Contributors

CommitsContributor
95jonschlinkert
2tunnckoCore

Building docs

(This project's readme.md is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the .verb.md readme template.)

To generate the readme, run the following command:

$ npm install -g verbose/verb#dev verb-generate-readme && verb

Running tests

Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:

$ npm install && npm test

Author

Jon Schlinkert

License

Copyright © 2017, Jon Schlinkert. Released under the MIT License.


This file was generated by verb-generate-readme, v0.6.0, on May 19, 2017.