feat: support prisma-client generator provider

omar-dulaimi · omar-dulaimi · commit 7b0071fd2734 · 2025-11-07T14:43:44.000+03:00
diff --git a/README.md b/README.md
@@ -64,7 +64,14 @@ pnpm add prisma-class-validator-generator
 
 1. Add the generator to your Prisma schema:
 
+> **Heads up:** Keep a Prisma Client generator in the same schema. Both `provider = "prisma-client"` (recommended) and `provider = "prisma-client-js"` are supported.
+
 ```prisma
+generator client {
+  provider = "prisma-client" // or "prisma-client-js"
+  output   = "../generated/prisma-client" // required when using prisma-client
+}
+
 generator class_validator {
   provider = "prisma-class-validator-generator"
   output   = "./generated"  // optional, defaults to ./generated
@@ -472,4 +479,4 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
     <a href="https://github.com/omar-dulaimi/prisma-class-validator-generator/issues">🐛 Report Issues</a> •
     <a href="https://github.com/omar-dulaimi/prisma-class-validator-generator/discussions">💬 Discussions</a>
   </p>
-</div>
+</div>
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
@@ -1,5 +1,6 @@
 generator client {
-  provider = "prisma-client-js"
+  provider = "prisma-client"
+  output   = "../generated/prisma-client"
 }
 
 generator class_validator {
diff --git a/src/index.ts b/src/index.ts
@@ -5,7 +5,6 @@ generatorHandler({
   onManifest: () => ({
     defaultOutput: './generated',
     prettyName: 'Prisma Class Validator Generator',
-    requiresGenerators: ['prisma-client-js'],
   }),
   onGenerate: generate,
 });
diff --git a/src/prisma-generator.ts b/src/prisma-generator.ts
@@ -15,6 +15,11 @@ export interface GeneratorConfig {
   separateRelationFields: boolean;
 }
 
+const SUPPORTED_PRISMA_CLIENT_PROVIDERS = new Set([
+  'prisma-client',
+  'prisma-client-js',
+]);
+
 export async function generate(options: GeneratorOptions) {
   const outputDir = parseEnvValue(options.generator.output as EnvValue);
 
@@ -27,10 +32,16 @@ export async function generate(options: GeneratorOptions) {
   await fs.mkdir(outputDir, { recursive: true });
   await removeDir(outputDir, true);
 
-  const prismaClientProvider = options.otherGenerators.find(
-    (it) => parseEnvValue(it.provider) === 'prisma-client-js',
+  const prismaClientProvider = options.otherGenerators.find((it) =>
+    SUPPORTED_PRISMA_CLIENT_PROVIDERS.has(parseEnvValue(it.provider)),
   );
 
+  if (!prismaClientProvider) {
+    throw new Error(
+      'Prisma Class Validator Generator requires a Prisma Client generator with provider "prisma-client" or "prisma-client-js".',
+    );
+  }
+
   const prismaClientDmmf = await getDMMF({
     datamodel: options.datamodel,
     previewFeatures: prismaClientProvider?.previewFeatures || [],
diff --git a/tests/basic-generation.test.ts b/tests/basic-generation.test.ts
@@ -1,23 +1,21 @@
-import { exec } from 'child_process';
-import { promisify } from 'util';
 import { existsSync, readFileSync } from 'fs';
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
-
-const execAsync = promisify(exec);
+import {
+  ensureGeneratorBuilt,
+  runPrismaGenerate,
+} from './utils/prisma-test-helpers';
 
 describe('Basic Class Validator Generation', () => {
   beforeAll(async () => {
-    // Build the generator first
-    await execAsync('npm run build');
+    await ensureGeneratorBuilt();
   }, 60000);
 
   it('should generate basic models with class validators', async () => {
     const schemaPath = path.resolve(__dirname, 'schemas/basic.prisma');
     const outputPath = path.resolve(__dirname, 'generated/basic');
 
-    // Generate using the basic schema
-    await execAsync(`npx prisma generate --schema="${schemaPath}"`);
+    await runPrismaGenerate({ schemaPath });
 
     // Check if generated files exist
     expect(existsSync(path.join(outputPath, 'models', 'User.model.ts'))).toBe(
diff --git a/tests/comprehensive-schema.test.ts b/tests/comprehensive-schema.test.ts
@@ -1,23 +1,21 @@
-import { exec } from 'child_process';
-import { promisify } from 'util';
 import { existsSync, readFileSync } from 'fs';
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
-
-const execAsync = promisify(exec);
+import {
+  ensureGeneratorBuilt,
+  runPrismaGenerate,
+} from './utils/prisma-test-helpers';
 
 describe('Comprehensive Schema Generation', () => {
   beforeAll(async () => {
-    // Build the generator first
-    await execAsync('npm run build');
+    await ensureGeneratorBuilt();
   }, 60000);
 
   it('should generate comprehensive models with enums and relations', async () => {
     const schemaPath = path.resolve(__dirname, 'schemas/comprehensive.prisma');
     const outputPath = path.resolve(__dirname, 'generated/comprehensive');
 
-    // Generate using the comprehensive schema
-    await execAsync(`npx prisma generate --schema="${schemaPath}"`);
+    await runPrismaGenerate({ schemaPath });
 
     // Check if generated files exist
     expect(existsSync(path.join(outputPath, 'models', 'User.model.ts'))).toBe(
diff --git a/tests/prisma-client-js-provider.test.ts b/tests/prisma-client-js-provider.test.ts
@@ -0,0 +1,34 @@
+import { existsSync } from 'fs';
+import { describe, it, expect, beforeAll } from 'vitest';
+import path from 'path';
+import {
+  ensureGeneratorBuilt,
+  runPrismaGenerate,
+} from './utils/prisma-test-helpers';
+
+const schemaPath = path.resolve(
+  __dirname,
+  'schemas/prisma-client-js-provider.prisma',
+);
+const classValidatorOutput = path.resolve(
+  __dirname,
+  'generated/providers/prisma-client-js-class-validator',
+);
+
+
+describe('Prisma Client JS generator provider', () => {
+  beforeAll(async () => {
+    await ensureGeneratorBuilt();
+  }, 60000);
+
+  it('generates artifacts when using provider = "prisma-client-js"', async () => {
+    await runPrismaGenerate({ schemaPath });
+
+    expect(
+      existsSync(path.join(classValidatorOutput, 'models', 'User.model.ts')),
+    ).toBe(true);
+    expect(
+      existsSync(path.join(classValidatorOutput, 'helpers', 'index.ts')),
+    ).toBe(true);
+  });
+});
diff --git a/tests/prisma-client-provider.test.ts b/tests/prisma-client-provider.test.ts
@@ -0,0 +1,38 @@
+import { existsSync } from 'fs';
+import { describe, it, expect, beforeAll } from 'vitest';
+import path from 'path';
+import {
+  ensureGeneratorBuilt,
+  runPrismaGenerate,
+} from './utils/prisma-test-helpers';
+
+const schemaPath = path.resolve(
+  __dirname,
+  'schemas/prisma-client-provider.prisma',
+);
+const classValidatorOutput = path.resolve(
+  __dirname,
+  'generated/providers/prisma-client-class-validator',
+);
+const prismaClientOutput = path.resolve(
+  __dirname,
+  'generated/providers/prisma-client',
+);
+
+describe('Prisma Client generator provider', () => {
+  beforeAll(async () => {
+    await ensureGeneratorBuilt();
+  }, 60000);
+
+  it('generates artifacts when using provider = "prisma-client"', async () => {
+    await runPrismaGenerate({ schemaPath });
+
+    expect(
+      existsSync(path.join(classValidatorOutput, 'models', 'User.model.ts')),
+    ).toBe(true);
+    expect(
+      existsSync(path.join(classValidatorOutput, 'helpers', 'index.ts')),
+    ).toBe(true);
+    expect(existsSync(prismaClientOutput)).toBe(true);
+  });
+});
diff --git a/tests/relation-splitting.test.ts b/tests/relation-splitting.test.ts
@@ -1,19 +1,16 @@
-import { exec } from 'child_process';
-import { promisify } from 'util';
 import { existsSync, readFileSync } from 'fs';
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
-
-const execAsync = promisify(exec);
+import {
+  ensureGeneratorBuilt,
+  runPrismaGenerate,
+} from './utils/prisma-test-helpers';
 
 describe('Relation Splitting Generation', () => {
   beforeAll(async () => {
-    // Build the generator first
-    await execAsync('npm run build');
-
-    // Generate models for full-features schema
+    await ensureGeneratorBuilt();
     const schemaPath = path.resolve(__dirname, 'schemas/full-features.prisma');
-    await execAsync(`npx prisma generate --schema="${schemaPath}"`);
+    await runPrismaGenerate({ schemaPath });
   }, 60000);
 
   it('should generate separate base and relation classes', () => {
diff --git a/tests/schemas/basic.prisma b/tests/schemas/basic.prisma
@@ -1,5 +1,6 @@
 generator client {
-  provider = "prisma-client-js"
+  provider = "prisma-client"
+  output   = "../generated/basic-client"
 }
 
 generator class_validator {
@@ -30,4 +31,4 @@ model Post {
   author    User?    @relation(fields: [authorId], references: [id])
   authorId  Int?
   rating    Float
-}
+}
diff --git a/tests/schemas/prisma-client-js-provider.prisma b/tests/schemas/prisma-client-js-provider.prisma
@@ -0,0 +1,18 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+generator class_validator {
+  provider = "node ./lib/generator.js"
+  output   = "../generated/providers/prisma-client-js-class-validator"
+}
+
+datasource db {
+  provider = "sqlite"
+  url      = "file:./provider-client-js.db"
+}
+
+model User {
+  id    Int    @id @default(autoincrement())
+  email String @unique
+}
diff --git a/tests/schemas/prisma-client-provider.prisma b/tests/schemas/prisma-client-provider.prisma
@@ -0,0 +1,19 @@
+generator client {
+  provider = "prisma-client"
+  output   = "../generated/providers/prisma-client"
+}
+
+generator class_validator {
+  provider = "node ./lib/generator.js"
+  output   = "../generated/providers/prisma-client-class-validator"
+}
+
+datasource db {
+  provider = "sqlite"
+  url      = "file:./provider-client.db"
+}
+
+model User {
+  id    Int    @id @default(autoincrement())
+  email String @unique
+}
diff --git a/tests/self-relation.test.ts b/tests/self-relation.test.ts
@@ -1,19 +1,16 @@
-import { exec } from 'child_process';
-import { promisify } from 'util';
 import { existsSync, readFileSync } from 'fs';
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
-
-const execAsync = promisify(exec);
+import {
+  ensureGeneratorBuilt,
+  runPrismaGenerate,
+} from './utils/prisma-test-helpers';
 
 describe('Self-Relation Generation', () => {
   beforeAll(async () => {
-    // Build the generator first
-    await execAsync('npm run build');
-
-    // Generate models for self-relation schema
+    await ensureGeneratorBuilt();
     const schemaPath = path.resolve(__dirname, 'schemas/self-relation.prisma');
-    await execAsync(`npx prisma generate --schema="${schemaPath}"`);
+    await runPrismaGenerate({ schemaPath });
   }, 60000);
 
   it('should generate UserBase class without self-relations', () => {
diff --git a/tests/setup.ts b/tests/setup.ts
@@ -0,0 +1,11 @@
+import { beforeEach, afterEach } from 'vitest';
+
+const baseEnv = { ...process.env };
+
+beforeEach(() => {
+  process.env = { ...baseEnv } as NodeJS.ProcessEnv;
+});
+
+afterEach(() => {
+  process.env = { ...baseEnv } as NodeJS.ProcessEnv;
+});
diff --git a/tests/swagger-generation.test.ts b/tests/swagger-generation.test.ts
@@ -1,19 +1,16 @@
-import { exec } from 'child_process';
-import { promisify } from 'util';
 import { existsSync, readFileSync } from 'fs';
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
-
-const execAsync = promisify(exec);
+import {
+  ensureGeneratorBuilt,
+  runPrismaGenerate,
+} from './utils/prisma-test-helpers';
 
 describe('Swagger Generation', () => {
   beforeAll(async () => {
-    // Build the generator first
-    await execAsync('npm run build');
-
-    // Generate models for swagger schema
+    await ensureGeneratorBuilt();
     const schemaPath = path.resolve(__dirname, 'schemas/swagger.prisma');
-    await execAsync(`npx prisma generate --schema="${schemaPath}"`);
+    await runPrismaGenerate({ schemaPath });
   }, 60000);
 
   it('should generate models with Swagger decorators when enabled', () => {
@@ -73,12 +70,9 @@ describe('Swagger Generation', () => {
 
 describe('Combined Class with separateRelationFields', () => {
   beforeAll(async () => {
-    // Build the generator first
-    await execAsync('npm run build');
-
-    // Generate models for full-features schema (has both swagger and separateRelationFields)
+    await ensureGeneratorBuilt();
     const schemaPath = path.resolve(__dirname, 'schemas/full-features.prisma');
-    await execAsync(`npx prisma generate --schema="${schemaPath}"`);
+    await runPrismaGenerate({ schemaPath });
   }, 60000);
 
   it('should generate combined class with class-validator and Swagger decorators for relations', () => {
diff --git a/tests/utils/prisma-test-helpers.ts b/tests/utils/prisma-test-helpers.ts
@@ -0,0 +1,25 @@
+import { exec } from 'child_process';
+import { promisify } from 'util';
+
+const execAsync = promisify(exec);
+
+let buildPromise: Promise<void> | null = null;
+
+export async function ensureGeneratorBuilt() {
+  if (!buildPromise) {
+    buildPromise = execAsync('npm run build');
+  }
+  return buildPromise;
+}
+
+interface GenerateOptions {
+  schemaPath: string;
+  env?: NodeJS.ProcessEnv;
+}
+
+export async function runPrismaGenerate(options: GenerateOptions) {
+  const { schemaPath, env } = options;
+  await execAsync(`npx prisma generate --schema="${schemaPath}"`, {
+    env: { ...process.env, ...env },
+  });
+}
diff --git a/vitest.config.js b/vitest.config.js

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,6 @@`
`1`	`1`	`generator client {`
`2`		`- provider = "prisma-client-js"`
	`2`	`+ provider = "prisma-client"`
	`3`	`+ output = "../generated/prisma-client"`
`3`	`4`	`}`
`4`	`5`
`5`	`6`	`generator class_validator {`