revert to 2 step build

.github/workflows/deploy.yml

@@ -19,6 +19,12 @@ jobs:
             gpx/package-lock.json
             website/package-lock.json
       
+      - name: Install dependencies for gpx
+        run: npm install --prefix gpx
+
+      - name: Build gpx
+        run: npm run build --prefix gpx
+
       - name: Install dependencies for website
         run: npm install --prefix website
 

README.md

@@ -29,9 +29,17 @@ The code is split into two parts:
 - `gpx`: a Typescript library for parsing and manipulating GPX files,
 - `website`: the website itself, which is a [SvelteKit](https://kit.svelte.dev/) application.
 
-You will need [Node.js](https://nodejs.org/) to build and run the website.
+You will need [Node.js](https://nodejs.org/) to build and run these two parts.
 
-### Running the website in development mode
+### Building the `gpx` library
+
+```bash
+cd gpx
+npm install
+npm run build
+```
+
+### Running the website
 
 To be able to load the map, you will need to create your own <a href="https://account.mapbox.com/auth/signup" target="_blank">Mapbox access token</a> and store it in a `.env` file in the `website` directory.
 

gpx/package.json

@@ -22,6 +22,6 @@
     },
     "scripts": {
         "build": "tsc",
-        "postinstall": "npm install && npm run build"
+        "postinstall": "npm run build"
     }
 }