部署至Vercel遭遇PrismaClientInitializationError问题求助

核心解决方案：修改构建脚本强制生成Prisma Client #

问题根源是Vercel的依赖缓存机制跳过了Prisma Client的自动生成步骤，导致使用过期客户端版本。只需修改package.json中的build命令，在构建前执行prisma generate：

"scripts": {
  "dev": "next dev",
  "build": "prisma generate && next build",
  "start": "next start",
  "lint": "next lint"
}

补充说明 #

• 你写的全局Prisma Client实例代码是正确的，问题不在实例创建逻辑，而是构建阶段缺少生成步骤。
• prisma generate会根据当前schema.prisma文件重新生成适配的客户端代码，覆盖Vercel缓存中的旧版本。
• 可先在本地运行npm run build测试，确认构建流程能正常生成客户端并完成项目构建，排除本地配置问题。

问题背景 #

部署到Vercel时触发PrismaClientInitializationError，错误提示Vercel缓存导致Prisma Client未自动生成。已创建全局PrismaClient实例：

import { PrismaClient } from "@prisma/client";

declare global {
  var prisma: PrismaClient | undefined;
}

const client = globalThis.prisma || new PrismaClient();
if (process.env.NODE_ENV !== "production") globalThis.prisma = client;

export default client;

完整错误日志：

PrismaClientInitializationError: Prisma has detected that this project was built on Vercel, which caches dependencies. This leads to an outdated Prisma Client because Prisma's auto-generation isn't triggered. To fix this, make sure to run the `prisma generate` command during the build process.
    at eu (/vercel/path0/node_modules/@prisma/client/runtime/library.js:164:69)
    at new t (/vercel/path0/node_modules/@prisma/client/runtime/library.js:177:3203)
    at 40754 (/vercel/path0/.next/server/chunks/578.js:138:37)
    at __webpack_require__ (/vercel/path0/.next/server/webpack-runtime.js:25:43)
    at 76578 (/vercel/path0/.next/server/chunks/578.js:23:16)
    at __webpack_require__ (/vercel/path0/.next/server/webpack-runtime.js:25:43)
    at 32631 (/vercel/path0/.next/server/app/(site)/home/page.js:4370:22)
    at Function.__webpack_require__ (/vercel/path0/.next/server/webpack-runtime.js:25:43)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async collectGenerateParams (/vercel/path0/node_modules/next/dist/build/utils.js:822:17) {
  clientVersion: '4.15.0',
  errorCode: undefined
}
> Build error occurred
Error: Failed to collect page data for /home
    at /vercel/path0/node_modules/next/dist/build/utils.js:1155:15
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  type: 'Error'
}
Error: Command "npm run build" exited with 1
BUILD_UTILS_SPAWN_1: Command "npm run build" exited with 1

内容的提问来源于stack exchange，提问作者Mathew