Security News
Oracle Drags Its Feet in the JavaScript Trademark Dispute
Oracle seeks to dismiss fraud claims in the JavaScript trademark dispute, delaying the case and avoiding questions about its right to the name.
By Sarah Gooding - Feb 07, 2025
New Case Study:See how Anthropic automated 95% of dependency reviews with Socket.Learn More →
@fictiv/falcor
Advanced tools
Falcor 
Developer Preview
1.x does not mean we are out of developer preview mode. Simply means we
are breaking the contract and we would like to respect ^ within peoples NPM
dependencies. 1.x does contain breaking changes that can be reviewed here
This release is a developer preview. We are looking for community help to track down and fix bugs. We are also looking for help integrating with existing MVC frameworks, as well as ports to other platforms.
- master currently reflects work in progress, and contains backward incompatible changes which will become the next major version bump.
- 0.x reflects the currently published npm version. Bug fixes specific to 0.x can be submitted against this branch.
Important Note for Webpack Users
If you're including falcor in your app, via npm and require('falcor'), and you're building a browser bundle for your app with Webpack, you'll need to add an alias entry for the 'rx' module in your webpack config, to avoid this RxJS bug: 'https://github.com/Reactive-Extensions/RxJS/issues/832'. You may already have such an entry, if you're using RxJS already. An example is below:
In webpack.config.js:
module.exports = {
resolve: {
alias: {
// Workaround https://github.com/Reactive-Extensions/RxJS/issues/832, until it's fixed
'rx$': <path to rx/dist/rx.js file >
}
}
};
Getting Started
You can check out a working example server for a Netflix-like application here right now. Alternately you can go through this barebones tutorial in which we use the Falcor Router to create a Virtual JSON resource. In this tutorial we will use Falcor's express middleware to serve the Virtual JSON resource on an application server at the URL /model.json. We will also host a static web page on the same server which retrieves data from the Virtual JSON resource.
Creating a Virtual JSON Resource
In this example we will use the falcor Router to build a Virtual JSON resource on an app server and host it at /model.json. The JSON resource will contain the following contents:
{
"greeting": "Hello World"
}
Normally Routers retrieve the data for their Virtual JSON resource from backend datastores or other web services on-demand. However in this simple tutorial the Router will simply return static data for a single key.
First we create a folder for our application server.
mkdir falcor-app-server
cd falcor-app-server
npm init
Now we install the falcor Router.
npm install falcor-router --save
Then install express and falcor-express. Support for restify is also available, as is support for hapi via a third-party implementation.
npm install express --save
npm install falcor-express --save
Now we create an index.js file with the following contents:
// index.js
var falcorExpress = require('falcor-express');
var Router = require('falcor-router');
var express = require('express');
var app = express();
app.use('/model.json', falcorExpress.dataSourceRoute(function (req, res) {
// create a Virtual JSON resource with single key ("greeting")
return new Router([
{
// match a request for the key "greeting"
route: "greeting",
// respond with a PathValue with the value of "Hello World."
get: function() {
return {path:["greeting"], value: "Hello World"};
}
}
]);
}));
// serve static files from current directory
app.use(express.static(__dirname + '/'));
var server = app.listen(3000);
Now we run the server, which will listen on port 3000 for requests for /model.json.
node index.js
Retrieving Data from the Virtual JSON resource
Now that we've built a simple virtual JSON document with a single read-only key "greeting", we will create a test web page and retrieve this key from the server.
Now create an index.html file with the following contents:
<!-- index.html -->
<html>
<head>
<!-- Do _not_ rely on this URL in production. Use only during development. -->
<script src="https://netflix.github.io/falcor/build/falcor.browser.js"></script>
<!-- For production use. -->
<!-- <script src="https://cdn.jsdelivr.net/falcor/{VERSION}/falcor.browser.min.js"></script> -->
<script>
var model = new falcor.Model({source: new falcor.HttpDataSource('/model.json') });
// retrieve the "greeting" key from the root of the Virtual JSON resource
model.
get("greeting").
then(function(response) {
document.write(response.json.greeting);
});
</script>
</head>
<body>
</body>
</html>
Now visit http://localhost:3000/index.html and you should see the message retrieved from the server:
Hello World
Additional Resources
For detailed high-level documentation explaining the Model, the Router, and JSON Graph check out the Falcor website.
For API documentation, go here
For a working example of a Router, check out the falcor-router-demo.
For questions and discussion, use Stack Overflow.
Keywords
FAQs
A JavaScript library for efficient data fetching.
The npm package @fictiv/falcor receives a total of 3 weekly downloads. As such, @fictiv/falcor popularity was classified as not popular.
We found that @fictiv/falcor demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Package last updated on 25 Jan 2017
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Related posts
Security News
Linux Foundation Warns Open Source Developers: Compliance with Sanctions Is Not Optional
The Linux Foundation is warning open source developers that compliance with global sanctions is mandatory, highlighting legal risks and restrictions on contributions.
By Sarah Gooding - Feb 06, 2025
Security News
Maven Central Adds Sigstore Signature Validation
Maven Central now validates Sigstore signatures, making it easier for developers to verify the provenance of Java packages.
By Sarah Gooding - Feb 06, 2025