Detect broken links

Installation

1. Install BrainDB

2. Configure BrainDB

   src/lib/braindb.mjs

   import { getBrainDb } from "@braindb/astro";
   
   let unresolvedLinksCount = 0;
   getBrainDb().on("*", (action, opts) => {
     if (opts) {
       opts.document.unresolvedLinks().forEach((link) => {
         unresolvedLinksCount++;
         console.log(
           `Unresolved link: ${link
             .from()
             .path()}:${link.line()}:${link.column()}`
         );
       });
     }
     // fail build if there are broken links
     if (
       import.meta.env.PROD &&
       action === "ready" &&
       unresolvedLinksCount > 0
     ) {
       process.exit(1);
     }
   });