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Use Prisma with Bun - Bun

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Use Prisma with Bun - BunSkip to main contentBun home pageSearch...⌘KInstall BunSearch...NavigationEcosystem & FrameworksUse Prisma with BunRuntimePackage ManagerBundlerTest RunnerGuidesReferenceBlogFeedbackdiv:first-child]:!hidden peer-[.is-custom]:[&>div:first-child]:sm:!hidden peer-[.is-custom]:[&>div:first-child]:md:!hidden peer-[.is-custom]:[&>div:first-child]:lg:!hidden peer-[.is-custom]:[&>div:first-child]:xl:!hidden">OverviewGuidesDeploymentDeploy on VercelDeploy on RailwayDeploy on RenderDeploy on AWS LambdaDeploy on DigitalOceanDeploy on Google Cloud RunRuntime & DebuggingTypeScript typesRe-map import pathsVS Code debuggerWeb debuggerHeap snapshotsBuild-time constantsDefine constantsGitHub ActionsCodesign on macOSUtilitiesUpgrade BunDetect BunGet Bun versionHash passwordGenerate UUIDBase64 encodingGzip compressionDEFLATE compressionEscape HTMLDeep equalitySleepFile URL to pathPath to file URLFind executable pathimport.meta.dirimport.meta.fileimport.meta.pathCheck 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on macOSModule SystemImport JSONImport TOMLImport YAMLImport JSON5Import HTMLimport.meta.dirimport.meta.fileimport.meta.pathCheck entrypointGet entrypoint pathFile SystemRead as stringRead to BufferRead to Uint8ArrayRead to ArrayBufferRead JSON fileGet MIME typeCheck file existsWatch directoryRead as streamWrite string to fileWrite BlobWrite ResponseAppend to fileIncremental writeWrite streamWrite to stdoutWrite file to stdoutCopy fileDelete fileDelete filesDelete directoriesUtilitiesHash passwordGenerate UUIDBase64 encodingGzip compressionDEFLATE compressionEscape HTMLDeep equalitySleepFile URL to pathPath to file URLFind executable pathHTML ProcessingExtract links using HTMLRewriterOpenGraph tagsBinary DataArrayBuffer to stringArrayBuffer to BufferArrayBuffer to BlobArrayBuffer to ArrayArrayBuffer to Uint8ArrayBuffer to stringBuffer to ArrayBufferBuffer to BlobBuffer to Uint8ArrayBuffer to ReadableStreamBlob to stringBlob to ArrayBufferBlob to Uint8ArrayBlob to DataViewBlob to ReadableStreamUint8Array to stringUint8Array to ArrayBufferUint8Array to BufferUint8Array to BlobUint8Array to DataViewUint8Array to ReadableStreamDataView to stringStreamsStream to stringStream to JSONStream to BlobStream to BufferStream to ArrayBufferStream to Uint8ArrayStream to arrayReadable to stringReadable to JSONReadable to BlobReadable to Uint8ArrayReadable to ArrayBufferEcosystem & FrameworksUse Prisma with BunCopy pagespan]:line-clamp-1 overflow-hidden group flex items-center py-0.5 gap-1 text-sm text-gray-950/50 dark:text-white/50 group-hover:text-gray-950/70 dark:group-hover:text-white/70 rounded-none rounded-r-xl border px-3 border-gray-200 aspect-square dark:border-white/[0.07] bg-background-light dark:bg-background-dark hover:bg-gray-600/5 dark:hover:bg-gray-200/5" aria-label="More actions" type="button" id="radix-_R_2shjinpfd9rqaabsnpfdb_" aria-haspopup="menu" aria-expanded="false" data-state="closed">Copy pagespan]:line-clamp-1 overflow-hidden group flex items-center py-0.5 gap-1 text-sm text-gray-950/50 dark:text-white/50 group-hover:text-gray-950/70 dark:group-hover:text-white/70 rounded-none rounded-r-xl border px-3 border-gray-200 aspect-square dark:border-white/[0.07] bg-background-light dark:bg-background-dark hover:bg-gray-600/5 dark:hover:bg-gray-200/5" aria-label="More actions" type="button" id="radix-_R_5hjinpfd9rqaabsnpfdb_" aria-haspopup="menu" aria-expanded="false" data-state="closed">Note — Prisma’s dynamic subcommand loading system currently requires npm to be installed alongside Bun. This affects certain CLI commands like prisma init, prisma migrate, etc. Generated code works perfectly with Bun using the new prisma-client generator. 1

Create a new project

Prisma works out of the box with Bun. First, create a directory and initialize it with bun init.terminalCopymkdir prisma-app cd prisma-app bun init 2

Install Prisma dependencies

Then install the Prisma CLI (prisma), Prisma Client (@prisma/client), and the LibSQL adapter as dependencies.terminalCopybun add -d prisma bun add @prisma/client @prisma/adapter-libsql 3

Initialize Prisma with SQLite

We’ll use the Prisma CLI with bunx to initialize our schema and migration directory. For simplicity we’ll be using an in-memory SQLite database.terminalCopybunx --bun prisma init --datasource-provider sqlite This creates a basic schema. We need to update it to use the new Rust-free client with Bun optimization. Open prisma/schema.prisma and modify the generator block, then add a simple User model.prisma/schema.prismaCopy generator client { provider = "prisma-client" output = "./generated" engineType = "client" runtime = "bun" } datasource db { provider = "sqlite" url = env("DATABASE_URL") } model User { id Int @id @default(autoincrement()) email String @unique name String? } 4

Create and run database migration

Then generate and run initial migration.This will generate a .sql migration file in prisma/migrations, create a new SQLite instance, and execute the migration against the new instance.terminalCopy bunx --bun prisma migrate dev --name init CopyEnvironment variables loaded from .env Prisma schema loaded from prisma/schema.prisma Datasource "db": SQLite database "dev.db" at "file:./dev.db" SQLite database dev.db created at file:./dev.db Applying migration `20251014141233_init` The following migration(s) have been created and applied from new schema changes: prisma/migrations/ └─ 20251014141233_init/ └─ migration.sql Your database is now in sync with your schema. ✔ Generated Prisma Client (6.17.1) to ./generated in 18ms 5

Generate Prisma Client

As indicated in the output, Prisma re-generates our Prisma client whenever we execute a new migration. The client provides a fully typed API for reading and writing from our database. You can manually re-generate the client with the Prisma CLI.terminalCopybunx --bun prisma generate 6

Initialize Prisma Client with LibSQL

Now we need to create a Prisma client instance. Create a new file prisma/db.ts to initialize the PrismaClient with the LibSQL adapter.prisma/db.tsCopyimport { PrismaClient } from "./generated/client"; import { PrismaLibSQL } from "@prisma/adapter-libsql"; const adapter = new PrismaLibSQL({ url: process.env.DATABASE_URL || "" }); export const prisma = new PrismaClient({ adapter }); 7

Create a test script

Let’s write a simple script to create a new user, then count the number of users in the database.index.tsCopyimport { prisma } from "./prisma/db"; // create a new user await prisma.user.create({ data: { name: "John Dough", email: `john-${Math.random()}@example.com`, }, }); // count the number of users const count = await prisma.user.count(); console.log(`There are ${count} users in the database.`); 8

Run and test the application

Let’s run this script with bun run. Each time we run it, a new user is created.terminalCopybun run index.ts CopyCreated john-0.12802932895402364@example.com There are 1 users in the database. terminalCopybun run index.ts CopyCreated john-0.8671308799782803@example.com There are 2 users in the database. terminalCopybun run index.ts CopyCreated john-0.4465968383115295@example.com There are 3 users in the database. That’s it! Now that you’ve set up Prisma using Bun, we recommend referring to the official Prisma docs as you continue to develop your application.

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