Add load() function to extension.

Author: mrstegeman

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
           12,
         ]
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node-version }}

.github/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
           node-version: 8

js/extension.js

@@ -4,8 +4,14 @@
       super('example-extension');
       this.addMenuEntry('Example Extension');
 
+      if (!window.Extension.prototype.hasOwnProperty('load')) {
+        this.load();
+      }
+    }
+
+    load() {
       this.content = '';
-      fetch(`/extensions/${this.id}/views/content.html`)
+      return fetch(`/extensions/${this.id}/views/content.html`)
         .then((res) => res.text())
         .then((text) => {
           this.content = text;

manifest.json

@@ -25,7 +25,7 @@
   "manifest_version": 1,
   "name": "Example Extension",
   "short_name": "Example",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "web_accessible_resources": [
     "css/*.css",
     "images/*.svg",

package.json

@@ -1,7 +1,7 @@
 {
   "name": "example-extension",
   "display_name": "Example Extension",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "Example extension add-on for Mozilla WebThings Gateway",
   "author": "Mozilla IoT",
   "main": "index.js",