Skip to main content

ExpressJS for Deno

Excited to say that I've been working on a fast, minimalist web framework for Deno ported from ExpressJS called Opine!

import opine from "https://deno.land/x/opine@master/mod.ts";

const app = opine();

app.use((req, res) => {
  res.send("Hello World");
});

app.listen(3000);

There are quite a few web frameworks out there already for Deno, such as Oak which is based on koa, but none that attempt to mirror the internals and API of ExpressJS that we know and love.

Opine attempts to solve this by completely porting ExpressJS over to TypeScript in Deno, making changes only where the Deno APIs dramatically differ from Node.

Installation

Opine is a Deno module available to import direct from this repo and via the Deno Registry.

Before importing, download and install Deno.

You can then import Opine straight into your project:

import opine from "https://deno.land/x/opine@master/mod.ts";

Note: Opine currently does not support Deno v1.0.1 due to typescript bugs introduced to the Deno core (#5704). It is recommended you upgrade to v1.0.2 using the upgrade command:

deno upgrade --version 1.0.2

Features

  • Robust routing
  • Focus on high performance
  • HTTP helpers

And more to come as we achieve feature parity with ExpressJS.

Philosophy

The Express philosophy is to provide small, robust tooling for HTTP servers, making it a great solution for single page applications, web sites, hybrids, or public HTTP APIs.

Opine will aim to achieve these same great goals, focusing first on developing robust tooling and features before moving onto accelerating performance and becoming super lightweight.

Examples

Opine comes with a few useful examples to get you started. To view the examples, clone the Opine repo:

git clone git://github.com/asos-craigmorten/opine.git --depth 1
cd opine

Then just run whichever example you want:

deno --allow-net --allow-read ./example/hello-world/index.ts

More!

Want to know more? Head over to the Opine GitHub page for full details, or check out one of the available doc resources:

Just a quick read today - stay tuned for further updates and some more posts on how you can use Opine and guides on how to convert your existing ExpressJS apps from Node to Opine apps on Deno!

Want to help, found a bug, or have a suggestion? Please reach out by commenting below or raising issues / PR on the repo!

Comments

Post a Comment

Popular posts from this blog

How to use Ngx-Charts in Angular ?

Charts helps us to visualize large amount of data in an easy to understand and interactive way. This helps businesses to grow more by taking important decisions from the data. For example, e-commerce can have charts or reports for product sales, with various categories like product type, year, etc. In angular, we have various charting libraries to create charts.  Ngx-charts  is one of them. Check out the list of  best angular chart libraries .  In this article, we will see data visualization with ngx-charts and how to use ngx-charts in angular application ? We will see, How to install ngx-charts in angular ? Create a vertical bar chart Create a pie chart, advanced pie chart and pie chart grid Introduction ngx-charts  is an open-source and declarative charting framework for angular2+. It is maintained by  Swimlane . It is using Angular to render and animate the SVG elements with all of its binding and speed goodness and uses d3 for the excellent math functio...
Post a Comment
Read more

Understand Angular’s forRoot and forChild

  forRoot   /   forChild   is a pattern for singleton services that most of us know from routing. Routing is actually the main use case for it and as it is not commonly used outside of it, I wouldn’t be surprised if most Angular developers haven’t given it a second thought. However, as the official Angular documentation puts it: “Understanding how  forRoot()  works to make sure a service is a singleton will inform your development at a deeper level.” So let’s go. Providers & Injectors Angular comes with a dependency injection (DI) mechanism. When a component depends on a service, you don’t manually create an instance of the service. You  inject  the service and the dependency injection system takes care of providing an instance. import { Component, OnInit } from '@angular/core'; import { TestService } from 'src/app/services/test.service'; @Component({ selector: 'app-test', templateUrl: './test.component.html', styleUrls: ['./test.compon...
Post a Comment
Read more

How to solve Puppeteer TimeoutError: Navigation timeout of 30000 ms exceeded

During the automation of multiple tasks on my job and personal projects, i decided to move on  Puppeteer  instead of the old school PhantomJS. One of the most usual problems with pages that contain a lot of content, because of the ads, images etc. is the load time, an exception is thrown (specifically the TimeoutError) after a page takes more than 30000ms (30 seconds) to load totally. To solve this problem, you will have 2 options, either to increase this timeout in the configuration or remove it at all. Personally, i prefer to remove the limit as i know that the pages that i work with will end up loading someday. In this article, i'll explain you briefly 2 ways to bypass this limitation. A. Globally on the tab The option that i prefer, as i browse multiple pages in the same tab, is to remove the timeout limit on the tab that i use to browse. For example, to remove the limit you should add: await page . setDefaultNavigationTimeout ( 0 ) ;  COPY SNIPPET The setDefaultNav...
Post a Comment
Read more