Cache Vite optimized deps across CI runs

Move Vite's deps cache from node_modules/.vite/ (wiped by npm ci)
to a repo-root .vite/ directory and persist it via actions/cache,
keyed on package-lock.json + astro.config.mjs.

Modest savings (~5-15s per job) since production builds rely more
on Rollup's in-process cache than the deps optimizer, but the
cache is free and survives lockfile-stable runs.

Author: eandreeva-twr

.github/workflows/s3-deploy-development.yml

@@ -24,6 +24,13 @@ jobs:
           key: astro-dev-en-${{ github.sha }}
           restore-keys: astro-dev-en-
 
+      - name: Cache Vite deps
+        uses: actions/cache@v4
+        with:
+          path: .vite
+          key: vite-${{ hashFiles('package-lock.json', 'astro.config.mjs') }}
+          restore-keys: vite-
+
       - run: npm ci
         env:
           PUPPETEER_SKIP_DOWNLOAD: '1'
@@ -67,6 +74,13 @@ jobs:
           key: astro-dev-${{ matrix.locale }}-${{ github.sha }}
           restore-keys: astro-dev-${{ matrix.locale }}-
 
+      - name: Cache Vite deps
+        uses: actions/cache@v4
+        with:
+          path: .vite
+          key: vite-${{ hashFiles('package-lock.json', 'astro.config.mjs') }}
+          restore-keys: vite-
+
       - run: npm ci
         env:
           PUPPETEER_SKIP_DOWNLOAD: '1'

.github/workflows/s3-deploy-production.yml

@@ -79,6 +79,13 @@ jobs:
           key: astro-en-${{ github.sha }}
           restore-keys: astro-en-
 
+      - name: Cache Vite deps
+        uses: actions/cache@v4
+        with:
+          path: .vite
+          key: vite-${{ hashFiles('package-lock.json', 'astro.config.mjs') }}
+          restore-keys: vite-
+
       - run: npm ci
         env:
           PUPPETEER_SKIP_DOWNLOAD: '1'
@@ -123,6 +130,13 @@ jobs:
           key: astro-${{ matrix.locale }}-${{ github.sha }}
           restore-keys: astro-${{ matrix.locale }}-
 
+      - name: Cache Vite deps
+        uses: actions/cache@v4
+        with:
+          path: .vite
+          key: vite-${{ hashFiles('package-lock.json', 'astro.config.mjs') }}
+          restore-keys: vite-
+
       - run: npm ci
         env:
           PUPPETEER_SKIP_DOWNLOAD: '1'
@@ -217,6 +231,13 @@ jobs:
           key: astro-${{ matrix.locale }}-${{ github.sha }}
           restore-keys: astro-${{ matrix.locale }}-
 
+      - name: Cache Vite deps
+        uses: actions/cache@v4
+        with:
+          path: .vite
+          key: vite-${{ hashFiles('package-lock.json', 'astro.config.mjs') }}
+          restore-keys: vite-
+
       - run: npm ci
         env:
           PUPPETEER_SKIP_DOWNLOAD: '1'

.gitignore

@@ -8,6 +8,7 @@
 # Generated files
 .docusaurus
 .cache-loader
+.vite
 
 # Misc
 .DS_Store

astro.config.mjs

@@ -27,6 +27,7 @@ export default defineConfig({
     inlineStylesheets: 'never',
   },
   vite: {
+    cacheDir: '.vite',
     plugins: [
       tailwindcss(),
     ],