Alexander Harding
43 lines
1.3 KiB
TypeScript
43 lines
1.3 KiB
TypeScript
import { MongoClient } from "mongodb";
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/**
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* Lazy MongoClient promise. We don't touch `process.env.MONGODB_URI` at module
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* import time so `next build` / page-data collection doesn't crash when the env
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* isn't populated (e.g. inside a Docker build with no runtime env).
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*/
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declare global {
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var _mongoClientPromise: Promise<MongoClient> | undefined;
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}
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function createClientPromise(): Promise<MongoClient> {
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const uri = process.env.MONGODB_URI;
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if (!uri) {
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throw new Error("MONGODB_URI is not set");
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}
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const client = new MongoClient(uri, {});
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return client.connect();
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}
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function getClientPromise(): Promise<MongoClient> {
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if (process.env.NODE_ENV === "development") {
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if (!globalThis._mongoClientPromise) {
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globalThis._mongoClientPromise = createClientPromise();
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}
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return globalThis._mongoClientPromise;
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}
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if (!globalThis._mongoClientPromise) {
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globalThis._mongoClientPromise = createClientPromise();
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}
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return globalThis._mongoClientPromise;
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}
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const clientPromise: Promise<MongoClient> = {
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then: (onFulfilled, onRejected) => getClientPromise().then(onFulfilled, onRejected),
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catch: (onRejected) => getClientPromise().catch(onRejected),
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finally: (onFinally) => getClientPromise().finally(onFinally),
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[Symbol.toStringTag]: "Promise",
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} as Promise<MongoClient>;
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export default clientPromise;
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