IndexedDB Data Storage Module

Promise based client-side wrapper for HTML5 IndexedDB in the browser, built with Browserify.

API

IndexedDBStore is built according to CommonJS principles. Thus the module is able to be imported in the browser using Browserify and the common require() function. Else, window.IndexedDBStore is available.

var IndexedDBStore = require('indexeddbstore')

var Store = new IndexedDBStore({
	dbName: "DEFAULT",	// String
	stores: ['store']	 // Array with store names to create
})

Store.save(Object|Array).then(function(guid) {
	console.log("GUID: ", guid)
	// => String|Array
})

Store.save(Object, "existing-guid").then(function(guid) {
	console.log("GUID: ", guid)
	// => String "existing-guid"
})

Store.create(Object).then(function(record) {
	console.log("Record: ", record)
	// => Object {data: Object, guid: String}
})

// ... Store#create supports the same method signatures as Store#save

Store.get("guid").then(function(record) {
	console.log("Record: ", record)
	// => Object {data: Object, guid: String}
})

Store.get( ["guid1", "guid2"] ).then(function(records) {
	console.log("Records: ", records)
	// => Array [ {data: {foo: "bar"}, guid: String guid1}, {data: {foo: "bar"}, guid: String guid2} ]
})

Store.all().then(function(records) {
	console.log("Records: ", records)
	// => Array
})

Store.size().then(function(size) {
	console.log("Size: ", size)
	// => Number
})

Store.clear().then(function() {
	console.log("Cleared store")
	// Post-con: Store#size() === 0
})

Store.use('store-name').save( ... )
// Returns the same instance but will operate on the specified store name.
// Will remember the store for next operation.

All methods returns a Promise, except for Store#use.

Build tasks

Gulp is used for build tasks. Be sure to run npm install to install all dependencies.

# Default: builds bundle.js from lib/IndexedDBStore.js
gulp
gulp build

# Watches lib/IndexedDBStore.js for changes and generates a build
gulp watch

# Removes `build`
gulp clean

Develop

You have to have a watch task running in order to let Browserify build a concatenated file will all dependencies.

npm install
gulp watch

A task for building files ready for distribution is available:

gulp dist

This will create files dist/indexeddbstore.js and dist/indexeddbstore.min.js.

A concatenated bundle.js will be generated in the build directory.

Tests

Tests reside in the test/tests.js file, and uses Mocha and Chai.js.

gulp test

Visit http://localhost:3000/test/runner.html in your browser to view the Mocha test runner. The gulp test task will start a static Connect file server and re-build the main and test files when any of their sources are edited (e.g. the build/bundle.js and test/bundle-test.js files will be re-built on save).

Thanks to Browserify, the tests are using require() to import the library files, including utils.js. The following task will build the test bundle used in the test runner HTML file:

gulp build-test

This is automatically called in gulp test.

Tests run in a browser window for now, since headless browsers like PhantomJS don't support the IndexedDB API yet (as of PhantomJS 1.9).

License

MIT.