$ show prisma/orm
This is Prisma 8, a next-generation ORM framework written in TypeScript. It provides a contract-driven schema definition system where a 'contract' (JSON + TypeScript types) defines the data model, codecs, extensions, and capabilities. From this contract, the framework generates migrations, a type-safe query builder, and runtime execution for multiple database targets (PostgreSQL, SQLite, MongoDB). The architecture follows a multi-plane design with clear separation between the control plane (schema definition, migration planning, CLI) and the runtime plane (query execution, codec encoding/decoding). The monorepo is organized into layers: foundation (contract IR, canonicalization), core (config, framework components), authoring (PSL parser, contract builder), tooling (CLI, emitter, migration tools), family-specific packages (SQL family, Mongo family), target adapters (Postgres, SQLite, Mongo), and extensions (pgvector, postgis, supabase, etc.). Key entry points include the CLI (packages/1-framework/3-tooling/cli/src/bin.ts), contract definition via defineContract, migration base class, runtime creation (createPostgresRuntime, createMongoRuntime), and the ORM client (Collection). Data flows from contract source (PSL or TypeScript) to contract IR, emission (contract.json + contract.d.ts), migration planning, DDL execution, runtime query building, codec encoding/decoding, and database execution. External dependencies include PostgreSQL (via pg driver), SQLite (via better-sqlite3 or WASM), MongoDB (via mongodb driver), various extensions (pgvector, postgis, etc.), and Node.js/Bun runtimes.
The LLM identified 6 files worth highlighting for reuse:
Implements the codec descriptor and registry pattern, providing a well-designed abstraction for type mapping across database boundaries. The CodecDescriptor interface with factory, nativeTypeFor, projectJson, and paramsSchema allows extensible type serialization. This pattern is reusable for any project needing a pluggable type system with runtime codec resolution.
Provides deterministic JSON canonicalization for content-addressed storage. The canonicalizeJson function with hooks for storage sort and path matching ensures stable hashing of contract artifacts. This is a reusable utility for any system requiring consistent JSON serialization for caching or identity.
A set of composable argument type parsers (str, num, int, oneOf, record, json, fieldRef) used by PSL attribute specifications. This pattern demonstrates a clean, functional approach to building DSL parsers from small combinators, reusable for any project needing extensible syntax parsing.
The migration planning subsystem with graph-based invariant enforcement and operation composition. It plans migrations across contract spaces, handles destructive changes, and enforces invariants via a graph path resolution. This pattern is reusable for any system requiring schema evolution with safety guarantees.
A single-consumption async iterable with PromiseLike interface, providing toArray(), first(), firstOrThrow() methods. This pattern is reusable for any project needing streaming query results with both iteration and materialization APIs.
An in-process token bucket rate limiter with configurable capacity and refill rate. Cleanly implemented with a simple interface for checking and consuming tokens. Reusable for any service needing per-client rate limiting without external dependencies.