test cache plugin for Netlify

.eslintignore

@@ -0,0 +1 @@
+plugins/

.prettierignore

@@ -9,6 +9,9 @@ builds/
 resources/
 _vendor/
 
+# Netlify plugins
+plugins/
+
 # dotfiles/config
 .*
 postcss.config.js

netlify.toml

@@ -37,6 +37,17 @@
   publish = "public"
   autoLaunch = false
 
+# Cache resoures between builds, see plugins/netlify-plugin-cache/index.js
+[[plugins]]
+  package = "/plugins/netlify-plugin-cache"
+  [plugins.inputs]
+    # TODO: make this better.
+    paths = "[\"resources\", \"_vendor\"]"
+[[plugins]]
+  package = "netlify-plugin-debug-cache"
+[[plugins]]
+  package = "@netlify/plugin-local-install-core"
+
 # The most important headers and redirects are specified in the _headers and
 # _redirects files generated by Hugo. These are additional custom rules.
 

package.json

@@ -14,7 +14,7 @@
     "url": "git+https://github.com/jakejarvis/jarv.is.git"
   },
   "scripts": {
-    "clean": "rimraf public/ resources/ builds/ && hugo mod clean",
+    "clean": "rimraf public/ builds/",
     "build": "run-s clean hugo minify",
     "build:preview": "run-s clean hugo:dev",
     "hugo": "hugo --gc --cleanDestinationDir --verbose",

plugins/netlify-plugin-cache/index.js

@@ -0,0 +1,27 @@
+// Based on https://github.com/cdeleeuwe/netlify-plugin-hugo-cache-resources/blob/master/index.js
+
+module.exports = {
+  async onPreBuild({ utils, inputs }) {
+    const paths = JSON.parse(inputs.paths);
+    const success = await utils.cache.restore(paths);
+
+    if (success) {
+      const cachedFiles = await utils.cache.list(paths);
+      console.log(`Restored cache of '${paths}', totaling ${cachedFiles.length} files.`);
+    } else {
+      console.log(`A cache of '${paths}' doesn't exist (yet).`);
+    }
+  },
+
+  async onPostBuild({ utils, inputs }) {
+    const paths = JSON.parse(inputs.paths);
+    const success = await utils.cache.save(paths);
+
+    if (success) {
+      const cachedFiles = await utils.cache.list(paths);
+      console.log(`Successfully cached '${paths}', totaling ${cachedFiles.length} files.`);
+    } else {
+      console.log(`Couldn't cache '${paths}'.`);
+    }
+  }
+};

plugins/netlify-plugin-cache/manifest.yml

@@ -0,0 +1,4 @@
+name: netlify-plugin-cache
+inputs:
+- name: paths
+  description: Array of directories to cache between builds.