refactor: create a local feature for deno (#24)

this changeset is to refactor and clean up deno related configurations
and settings to a local feature.

- move deno to a local feature
- move editor format settings to local feature
- avoid clean up before restore

.devcontainer/devcontainer.json

@@ -18,10 +18,8 @@
     "ghcr.io/devcontainers/features/docker-outside-of-docker:1": {
       "moby": false,
       "dockerDashComposeVersion": "v2"
-    }
-  },
-  "containerEnv": {
-    "DENO_INSTALL": "/usr/local"
+    },
+    "./local-features/deno": {}
   },
   "remoteEnv": {},
   // Configure tool-specific properties.
@@ -33,7 +31,6 @@
         // JavaScript
         "oven.bun-vscode",
         // TypeScript
-        "denoland.vscode-deno",
         "bierner.lit-html",
         "better-ts-errors.better-ts-errors",
         // Makefile
@@ -52,17 +49,8 @@
       "settings": {
         // Editor
         "editor.guides.bracketPairs": "active",
+        // Debug
         "debug.internalConsoleOptions": "neverOpen",
-        // Better linting & formatting
-        "deno.enable": true,
-        "editor.defaultFormatter": "denoland.vscode-deno",
-        "editor.formatOnPaste": true,
-        "editor.formatOnSave": true,
-        "editor.formatOnSaveMode": "file",
-        "editor.codeActionsOnSave": [
-          "source.organizeImports",
-          "source.fixAll"
-        ],
         // Terminal
         "terminal.integrated.defaultProfile.linux": "zsh",
         // Prettifies the response with emojis and such.
@@ -72,11 +60,10 @@
   },
   // Use 'updateContentCommand' to run commands after the container is successfully created.
   "updateContentCommand": {
-    "install_docsify": "bun install --global docsify-cli",
-    "install_deno": "curl -fsSL https://deno.land/install.sh | sh"
+    "install": "bun install --global docsify-cli"
   },
   // Use 'postCreateCommand' to run commands after the container is created.
   "postCreateCommand": {
-    "restore": "bun run clean && bun install"
+    "restore": "bun install"
   }
 }

.devcontainer/local-features/deno/devcontainer-feature.json

@@ -0,0 +1,46 @@
+{
+  "id": "deno",
+  "name": "Deno",
+  "version": "1.0.0",
+  "description": "Installs Deno and needed dependencies instead of Node.js.",
+  "options": {
+    "version": {
+      "type": "string",
+      "proposals": [
+        "latest"
+      ],
+      "default": "latest",
+      "description": "Select or enter a Deno version to install"
+    },
+    "denoInstall": {
+      "type": "string",
+      "description": "The path where Deno will be installed.",
+      "default": "/usr/local"
+    },
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "denoland.vscode-deno"
+      ],
+      "settings": {
+        // Better linting & formatting
+        "deno.enable": true,
+        "editor.defaultFormatter": "denoland.vscode-deno",
+        "editor.formatOnPaste": true,
+        "editor.formatOnSave": true,
+        "editor.formatOnSaveMode": "file",
+        "editor.codeActionsOnSave": [
+          "source.organizeImports",
+          "source.fixAll"
+        ]
+      }
+    }
+  },
+  "containerEnv": {
+    "DENO_INSTALL": "/usr/local"
+  },
+  "installsAfter": [
+    "ghcr.io/devcontainers/features/common-utils"
+  ]
+}

.devcontainer/local-features/deno/install.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -e
+
+DENO_VERSION=${VERSION:-"latest"}
+DENO_INSTALL=${DENO_INSTALL:-"/usr/local"}
+
+echo "Activating feature 'deno@${DENO_VERSION}'"
+
+# The 'install.sh' entrypoint script is always executed as the root user.
+
+# If we don't already have Deno installed, install it now.
+if ! deno --version > /dev/null ; then
+  echo "Installing Deno..."
+  if [ "${DENO_VERSION}" = "latest" ]; then
+      curl -fsSL https://deno.land/install.sh | sh
+  else
+      curl -fsSL https://deno.land/install.sh | sh -s v${DENO_VERSION}
+  fi
+fi