prisma-generator-checker

Very tiny/simple generator to check whether you have the latest generated prisma schema or not.

TODO automatically generate prisma schema when it is out of sync

How to use

make sure you have .env file in your project root folder.

Add this:

generator prisma_checker {
  provider = "npx prisma-generator-checker"
}

to your schema.prisma

then at runtime, you can do

import { checkPrismaSchemaHash } from '../node_modules/prisma-generator-checker/dist/checkPrismaSchemaHash'

if (process.env.NODE_ENV !== 'production') {
  // prisma generator checker should not be needed for prod as long as you trust your CI to generate the prisma client correctly
  checkPrismaSchemaHash()
}

this will check sha hash of the schema.prisma file to make sure it matches to the one stored in .env when your prisma generation was last executed. If it does not match, it throws an error like this:

Error: Prisma schema hash does not match the one in .env, please run prisma generate and commit the changes.
    at Object.<anonymous> (/home/capaj/oss/prisma-generator-checker/packages/generator/src/runtimeChecker.ts:7:11)
    at Module._compile (node:internal/modules/cjs/loader:1155:14)
    at Module.m._compile (/home/capaj/.local/share/pnpm/global/5/.pnpm/ts-node@10.9.1_typescript@4.8.2/node_modules/ts-node/src/index.ts:1618:23)
    at Module._extensions..js (node:internal/modules/cjs/loader:1209:10)
    at Object.require.extensions.<computed> [as .ts] (/home/capaj/.local/share/pnpm/global/5/.pnpm/ts-node@10.9.1_typescript@4.8.2/node_modules/ts-node/src/index.ts:1621:12)
    at Module.load (node:internal/modules/cjs/loader:1033:32)
    at Function.Module._load (node:internal/modules/cjs/loader:868:12)
    at Module.require (node:internal/modules/cjs/loader:1057:19)
    at require (node:internal/modules/cjs/helpers:103:18)
    at Object.<anonymous> (/home/capaj/oss/prisma-generator-checker/packages/usage/