Initial implementation of a browser extension to add puzzles.

.eslintignore

@@ -1,3 +1,4 @@
 eslint/dist
+extension/dist
 node_modules
 tests/node_modules

.gitignore

@@ -2,3 +2,5 @@ node_modules
 npm-debug.log
 jsconfig.json
 .vscode/launch.json
+extension/dist
+extension/tmp

.prettierignore

@@ -1,2 +1,2 @@
 .meteor
-eslint/dist
+eslint/dist

extension/.eslintrc.json

@@ -0,0 +1,26 @@
+{
+  "overrides": [
+    {
+      "files": ["**"],
+      "parserOptions": {
+        "tsconfigRootDir": "extension",
+        "project": "./tsconfig.json"
+      },
+      "rules": {
+        "import/no-extraneous-dependencies": [
+          "error",
+          {
+            "devDependencies": [
+              // All webpack config dependencies are dev dependencies, even when imported.
+              "**/webpack.*.mjs"
+            ]
+          }
+        ],
+        // Disable rules which require "npm install" to be run.
+        // TODO: Enable these if possible once we align on project organization.
+        "@typescript-eslint/restrict-plus-operands": ["off", {}],
+        "import/no-unresolved": ["off"]
+      }
+    }
+  ]
+}

extension/README.md

@@ -0,0 +1,31 @@
+# Jolly Roger Browser Extension
+
+## Project Structure
+
+- src: TypeScript source files
+- public: static files
+- dist/chrome: output Chrome Extension directory
+- dist/firefox: output Firefox Extension directory
+- dist/{browser}/js: Generated JavaScript files
+
+## Setup
+
+```
+npm install
+```
+
+## Build for production
+
+```
+npm run build
+```
+
+## Build for development (in watch mode)x
+
+```
+npm run watch
+```
+
+## Load extension to browser
+
+Load manifest.json from the appropriate `dist` subdirectory (`chrome` or `firefox`)