Add support for bigint

[mkermani144]

What happens?

When we generate code using an open api spec which contains int64 numbers, they are converted to numbers in the generated code.

What were you expecting to happen?

The int64 values should be converted to bigint, as js Number.MAX_SAFE_INTEGER cannot contain very large numbers (larger than 2^53).

Anyway, I think this should be an option, not a default.

[mkermani144]

I wonder if the main part of the fix is as simple as changing this:

https://github.com/anymaniax/orval/blob/94e2c8e4d8d07c76d249e90b6cc07c225e177ee0/packages/core/src/getters/scalar.ts#L31

to this:

let value = item.format === 'int64' ? 'bigint' : 'number'; 

[anymaniax]

Hello @mkermani144, indeed should be only that

[mkermani144]

@anymaniax
Hi,
I can open a PR if you want.

But I still don't know if this should be the default behavior, or a configuration option.

[anymaniax]

@mkermani144 with pleasure!

[mkermani144]

Opened #829.

[anymaniax]

Merged @mkermani144. thanks

[RichardLindhout]

This results in a lot of frontend error can we please make this optional?

[RichardLindhout]

Stuff like this

[anymaniax]

sure @RichardLindhout can you do a pull request with that?

[GBDev13]

@anymaniax would that work well? #841

[lukaw3d]

Can you add a test where #829 works?

When targeting react-query neither bigint parameters nor bigint responses work correctly.

paths:
  /big-param:
    get:
      parameters:
        - in: query
          name: aaa
          schema:
            type: integer
            format: int64

useGetBigParam({ aaa: 5n }) throws Uncaught TypeError: Do not know how to serialize a BigInt

paths:
  /big-response:
    get:
      responses:
        '200':
          description: a
          content:
            application/json:
              schema:
                type: object
                properties:
                  aaa:
                    type: integer
                    format: int64

useGetBigResponse().data?.data.aaa is typed as bigint | undefined but is still number | undefined in runtime