prisma-json-types-generator/src/on-manifest.ts

Changes JsonValues to your custom typescript type

import type { GeneratorManifest } from '@prisma/generator-helper';

const { version } = require('../package.json');

/** Generates simple metadata for this generator. */
export function onManifest(): GeneratorManifest {
  return {
    version,
    // TODO: We should change this to the real output of the generator in some way. But we cannot get its real output here
    // because we need to await the prisma client to be generated first.
    defaultOutput: './',
    prettyName: 'Prisma Json Types Generator',
    requiresGenerators: ['prisma-client-js']
  };
}