PrismaClientInitializationError: Unable to require prisma/client

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npx prisma generate

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rm -rf node_modules
rm package-lock.json  # または yarn.lock
npm install
npx prisma generate

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// package.json
{
  "scripts": {
    "postinstall": "prisma generate"
  }
}

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// package.json
{
  "scripts": {
    "build": "prisma generate && tsc",
    "vercel-build": "prisma generate && next build"
  }
}

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# Dockerfile
FROM node:20-alpine

WORKDIR /app

COPY package*.json ./
COPY prisma ./prisma/

RUN npm install
RUN npx prisma generate

COPY . .

RUN npm run build

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// package.json
{
  "scripts": {
    "postinstall": "prisma generate"
  }
}

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{
  "buildCommand": "prisma generate && npm run build"
}

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// apps/web/package.json
{
  "scripts": {
    "postinstall": "cd ../../packages/database && prisma generate"
  }
}

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// ESM環境での正しいインポート
import { PrismaClient } from '@prisma/client'

// シングルトンパターン（推奨）
const globalForPrisma = globalThis as unknown as {
  prisma: PrismaClient | undefined
}

export const prisma = globalForPrisma.prisma ?? new PrismaClient()

if (process.env.NODE_ENV !== 'production') {
  globalForPrisma.prisma = prisma
}

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# binaryTargetsを明示的に指定
# schema.prisma
generator client {
  provider      = "prisma-client-js"
  binaryTargets = ["native", "linux-musl-openssl-3.0.x"]
}

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# Alpine用のOpenSSLをインストール
RUN apk add --no-cache openssl

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# Prismaの情報を表示
npx prisma --version
npx prisma validate

# 生成されたクライアントを確認
ls -la node_modules/.prisma/client/