How to change BigInt type after Prisma Extension?

ORM

To work with bigint fields in Prisma Client, I followed this guide https://www.prisma.io/docs/orm/prisma-client/special-fields-and-types#serializing-bigint, and created an extension:

const convertBigIntExt = Prisma.defineExtension({
  name: 'convertBigIntExt',
  query: {
    $allOperations: async ({ args, query }) => {
      const result = await query(args);
      return JSON.parse(
        JSON.stringify(result, (_key, value) =>
          typeof value === 'bigint' ? value.toString() : value,
        ),
      );
    },
  },
});

const convertBigIntExt = Prisma.defineExtension({
  name: 'convertBigIntExt',
  query: {
    $allOperations: async ({ args, query }) => {
      const result = await query(args);
      return JSON.parse(
        JSON.stringify(result, (_key, value) =>
          typeof value === 'bigint' ? value.toString() : value,
        ),
      );
    },
  },
});

Now all bigint fields are returned as strings, great, but TypeScript still says they are

BigInt

BigInt

. Anytime I want to do some transformation, I have to write

field as unknown as string

field as unknown as string

which is inconvenient. How do I get the types generated by Prisma to take the extension into account?

Fields & types

Learn how to use about special fields and types with Prisma Client.

Prisma•2w ago•

2 replies

Việt An

How to change BigInt type after Prisma Extension?

ORM

To work with bigint fields in Prisma Client, I followed this guide https://www.prisma.io/docs/orm/prisma-client/special-fields-and-types#serializing-bigint, and created an extension:

const convertBigIntExt = Prisma.defineExtension({
  name: 'convertBigIntExt',
  query: {
    $allOperations: async ({ args, query }) => {
      const result = await query(args);
      return JSON.parse(
        JSON.stringify(result, (_key, value) =>
          typeof value === 'bigint' ? value.toString() : value,
        ),
      );
    },
  },
});

const convertBigIntExt = Prisma.defineExtension({
  name: 'convertBigIntExt',
  query: {
    $allOperations: async ({ args, query }) => {
      const result = await query(args);
      return JSON.parse(
        JSON.stringify(result, (_key, value) =>
          typeof value === 'bigint' ? value.toString() : value,
        ),
      );
    },
  },
});

Now all bigint fields are returned as strings, great, but TypeScript still says they are

BigInt

BigInt

. Anytime I want to do some transformation, I have to write

field as unknown as string

field as unknown as string

which is inconvenient. How do I get the types generated by Prisma to take the extension into account?

Fields & types

Learn how to use about special fields and types with Prisma Client.

How to change BigInt type after Prisma Extension?

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