try_files()

A Deno server for efficiently serving static files and passing unknown URLs to your app, inspired by nginx's try_files directive.

Quick Start

If you use a "public" dir for your project, try running this from your project directory:

deno run --allow-net --allow-read https://deno.land/x/try_files/server.ts

Features

• Zero script dependencies
• Dynamic CORS headers with OPTIONS handling
• Efficient cache headers
• 304 not modified based on mtime or etag
• Byte ranges, 206 partial content
• Optional memory caching of static files
• Proper server shutdown with SIGINT

By Example

This simple script uses try_files to serve static assets from the "public" directory before serving our custom page, which should also provide the 404 response when an app route is not found.

import { try_files } from "https://deno.land/x/try_files/mod.ts";

try_files(async function(request){
    let { pathname } = new URL(request.url);
    
    if(pathname === '/')
        return new Response('Welcome to my homepage!');
    
    return new Response('This is my 404 page!',{status:404});
});

This example builds on the previous one and demonstrates the options available to modify how try_files works:

import { try_files } from "https://deno.land/x/try_files/mod.ts";

const options = {
    port:8080,
    filesDir:'public',
    index:'index.html',
    corsMatch:'*', //undefined|'*'|RegExp
    memoryCache:false,
    byteRangeChunk: 1024 * 256,
    async beforeClose(){
        //this will fire after SIGINT but before the server.close()
        // ideal for passing along to child processes
        console.log('not without me!')
    },
}

try_files(async function(request){
    let { pathname } = new URL(request.url);
    if(pathname === '/') return new Response('Welcome to my homepage!');
    return new Response('This is my 404 page!',{status:404});
}, options);