1{ 
2"database": {
3    "rules": "database.rules.json"
4  },
5  "hosting": {
6    "public": "public", <------ This points to directory
7    "ignore": [
8      "firebase.json",
9      "**/.*",
10      "**/node_modules/**"
11    ],
12    "rewrites": [
13      {
14        "source": "**",
15        "destination": "/index.html"
16      }
17    ]
18  }
19}