50 lines
1.4 KiB
TypeScript
50 lines
1.4 KiB
TypeScript
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import { PrismaClient } from '@prisma/client'
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import invariant from 'tiny-invariant'
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invariant(process.env.DATABASE_URL, 'DATABASE_URL must be set')
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const DATABASE_URL = process.env.DATABASE_URL
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let prisma: PrismaClient
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declare global {
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var __db__: PrismaClient
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}
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// this is needed because in development we don't want to restart
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// the server with every change, but we want to make sure we don't
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// create a new connection to the DB with every change either.
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// in production we'll have a single connection to the DB.
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if (process.env.NODE_ENV === 'production') {
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prisma = getClient()
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} else {
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if (!global.__db__) {
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global.__db__ = getClient()
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}
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prisma = global.__db__
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}
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function getClient() {
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invariant(typeof DATABASE_URL === 'string', 'DATABASE_URL env var not set')
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const databaseUrl = new URL(DATABASE_URL)
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console.log(`🔌 setting up prisma client to ${databaseUrl.host}`)
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// NOTE: during development if you change anything in this function, remember
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// that this only runs once per server restart and won't automatically be
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// re-run per request like everything else is. So if you need to change
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// something in this file, you'll need to manually restart the server.
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const client = new PrismaClient({
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datasources: {
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db: {
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url: databaseUrl.toString()
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}
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}
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})
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// connect eagerly
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client.$connect()
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return client
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}
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export { prisma }
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