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mongodb.js
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mongodb.js
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import { MongoClient } from "mongodb";
const uri = process.env.MONGODB_URI;
const options = {};
let client;
let clientPromise;
if (!process.env.MONGODB_URI) {
throw new Error("Please add your Mongo URI to .env.local");
}
if (process.env.NODE_ENV === "development") {
// In development mode, use a global variable so that the value
// is preserved across module reloads caused by HMR (Hot Module Replacement).
if (!global._mongoClientPromise) {
client = new MongoClient(uri, options);
global._mongoClientPromise = client.connect();
}
clientPromise = global._mongoClientPromise;
} else {
// In production mode, it's best to not use a global variable.
client = new MongoClient(uri, options);
clientPromise = client.connect();
}
// Export a module-scoped MongoClient promise. By doing this in a
// separate module, the client can be shared across functions.
export default clientPromise;