first Firebase commit .. emulator works with functions & realtime DB

.firebaserc

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+{
+  "projects": {
+    "default": "kilvish-aa125"
+  }
+}

database.rules.json

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+{
+  /* Visit https://firebase.google.com/docs/database/security to learn more about security rules. */
+  "rules": {
+    ".read": false,
+    ".write": false
+  }
+}

firebase.json

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+{
+  "database": {
+    "rules": "database.rules.json"
+  },
+  "emulators": {
+    "auth": {
+      "port": 9099
+    },
+    "database": {
+      "port": 9000
+    },
+    "ui": {
+      "enabled": true
+    },
+    "singleProjectMode": true,
+    "functions": {
+      "port": 5001
+    }
+  },
+  "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"
+      ]
+    }
+  ]
+}

functions/.eslintrc.js

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+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: {
+    "object-curly-spacing": [2, "always"],
+    "quote-props": ["error", "as-needed"],
+    semi: ["error", "never"],
+    quotes: ["error", "double"],
+    "import/no-unresolved": 0,
+  },
+}

functions/.gitignore

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+# Compiled JavaScript files
+lib/**/*.js
+lib/**/*.js.map
+
+# TypeScript v1 declaration files
+typings/
+
+# Node.js dependency directory
+node_modules/