chore: add support for cloud functions and firestore

firebase.json

@@ -12,5 +12,25 @@
         "destination": "/index.html"
       }
     ]
-  }
+  },
+  "firestore": {
+    "rules": "firestore.rules",
+    "indexes": "firestore.indexes.json"
+  },
+  "functions": [
+    {
+      "source": "functions",
+      "codebase": "default",
+      "ignore": [
+        "node_modules",
+        ".git",
+        "firebase-debug.log",
+        "firebase-debug.*.log"
+      ],
+      "predeploy": [
+        "npm --prefix \"$RESOURCE_DIR\" run lint",
+        "npm --prefix \"$RESOURCE_DIR\" run build"
+      ]
+    }
+  ]
 }

firestore.indexes.json

@@ -0,0 +1,4 @@
+{
+  "indexes": [],
+  "fieldOverrides": []
+}

firestore.rules

@@ -0,0 +1,10 @@
+rules_version = '2';
+
+service cloud.firestore {
+  match /databases/{database}/documents {
+    match /{document=**} {
+      allow read: if true;
+      allow write: if false;
+    }
+  }
+}

functions/.eslintrc.js

@@ -0,0 +1,32 @@
+module.exports = {
+  root: true,
+  env: {
+    es6: true,
+    node: true,
+  },
+  extends: [
+    "eslint:recommended",
+    "plugin:import/errors",
+    "plugin:import/warnings",
+    "plugin:import/typescript",
+    "google",
+    "plugin:@typescript-eslint/recommended",
+  ],
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    project: ["tsconfig.json", "tsconfig.dev.json"],
+    sourceType: "module",
+  },
+  ignorePatterns: [
+    "/lib/**/*", // Ignore built files.
+  ],
+  plugins: [
+    "@typescript-eslint",
+    "import",
+  ],
+  rules: {
+    "quotes": ["error", "double"],
+    "import/no-unresolved": 0,
+    "indent": ["error", 2],
+  },
+};

functions/.gitignore

@@ -0,0 +1,9 @@
+# Compiled JavaScript files
+lib/**/*.js
+lib/**/*.js.map
+
+# TypeScript v1 declaration files
+typings/
+
+# Node.js dependency directory
+node_modules/