A Node.js and browserify leveldown API implementation that maps to chrome.storage.local in the browser
npm install chromestorage-downchrome.local.storage implementation of leveldown for mobile and desktop browsers. The idea is to be able to use the level stack on any browser that supports Chrome Storage.
The scenarios envisaged are:
1. Occasionally connected clients
2. Ad-hoc networks where clients need to sync directly with each other
This project is intended for use with the level eco-system.
``
npm install chromestorage-down
Basically we support any browser that has LocalStorage, but since we also rely on an ES5 environment due to dependencies from abstract-leveldown, in practice you will need the following shims in order to work correctly on all browsers (e.g. IE 8-9, Android 2.3):
* typedarray for binary storage
* es5-shim for just about everything
We run automated tests in the following browsers:
* Firefox: 40-latest
* Chrome: 44-beta
* IE: 9-11
* Edge: latest
* Safari: 7.0-latest
* iPhone: 8.0-latest
* Android: 4.1-latest
In environments without LocalStorage, such as Node or Safari private browsing, this module
will fall back to a temporary in-memory implementation, thanks to humble-localstorage.
At the command prompt in your chosen directory :
npm install localstorage-down
npm install levelup
npm install browserify -g
npm install beefy -g
Create a file called index.js and enter the following:
`js
var localstorage = require('localstorage-down');
var levelup = require('levelup');
var db = levelup('dbname', { db: localstorage });
db.put('name', 'James Dean');
db.put('dob', 'February 8, 1931');
db.put('occupation', 'Rebel');
db.put('cause', 'none');
db.readStream()
.on('data', function (data) {
if (typeof data.value !== 'undefined') {
console.log(data.key, '=', data.value);
}
})
.on('error', function (err) {
console.log('Oh my!', err);
})
.on('close', function () {
console.log('Stream closed');
})
.on('end', function () {
console.log('Stream ended');
});
`
Publish the site :
beefy index.js
See the output :
Listen to John Cage:
https://www.youtube.com/watch?v=9hVFCmK6GgM
npm run test
This will run tests in Node against localstorage-memory`.
To test in Saucelabs, you can run e.g.:
npm run test-browser
Or to test in Zuul locally:
npm run test-zuul-local
To test and check code coverage, run:
npm run coverage
To test and report code coverage to Coveralls, run:
npm run report-coverage