personae/prisma/seed.js

import "dotenv/config"
import { includes, isArray, isPlainObject, map, mapValues } from "lodash-es"
import prisma from "../server/utils/prisma.js"
import characters from "./seeds/Character.json" with { type: "json" }

function parseTimestamps(value, key) {
  if (includes(["createdAt", "updatedAt"], key)) {
    return new Date(value)
  } else {
    return value
  }
}

function deepConvertValues(object, converter) {
  // converter called with (value, key, object)
  if (isArray(object)) {
    return map(object, (element) => deepConvertValues(element, converter))
  } else if (isPlainObject(object)) {
    return mapValues(
      object,
      (value, key, object) => {
        if (isArray(value) || isPlainObject(value)) {
          return deepConvertValues(value, converter)
        } else {
          return converter(value, key, object)
        }
      }
    )
  } else {
    return object
  }
}

function deepParseTimestamps(object) {
  return deepConvertValues(object, parseTimestamps)
}

async function seedCharacters() {
  const { count } = await prisma.character.createMany({
    data: deepParseTimestamps(characters)
  })

  console.log(`Created ${count} characters.`)
}

async function main() {
  await seedCharacters()
}

main()
  .catch((error) => {
    if (error.meta?.message !== "not an error") {
      console.error(error)
      process.exit(1)
    }
  })
  .finally(async () => await prisma.$disconnect())