connect mongo to express api

1npm i mongoose
2
3const mongoose = require("mongoose");
4
5mongoose
6  .connect(
7    "your mongodb URI",
8    {
9      useNewUrlParser: true,
10      useCreateIndex: true,
11      useFindAndModify: false,
12      useUnifiedTopology: true,
13    }
14  )
15  .then(() => console.log("mongodb connected"))
16  .catch((err) => {
17    console.log(err.message);
18    process.exit(1);
19  });

1//using mongoose
2npm i mongoose
3
4const mongoose = require("mongoose");
5
6mongoose
7  .connect(
8    "your mongodb URI",
9    {
10      useNewUrlParser: true,
11      useCreateIndex: true,
12      useFindAndModify: false,
13      useUnifiedTopology: true,
14    }
15  )
16  .then(() => console.log("mongodb connected"))
17  .catch((err) => {
18    console.err(err.message);
19    process.exit(1);
20  });