Fix flattening zod schema - chained calls, enum value, tsConfigFilePath

[tinglei8]

There are 3 fixes in this PR:

Fix 1: Flatten chained function calls.

An example:

import { z } from 'zod';

const TypeEnum = z
  .enum(['Normal', 'Unknown'])
  .describe('Type of the item');

const FindManyInput = z.object({
  options: z
    .object({
      userId: z.string().describe('ID of the current user'),
      type1: TypeEnum.optional().describe('Type 1 of the item')
    })
    .merge({
      z.object({
        type2: TypeEnum.optional().describe('Type 2 of the item')
      })
    })
    .describe('Options to find many items'),
});

Before the fix, references to TypeEnum are not flattened in FindManyInput because it's referenced as parameters of the object() and merge() calls instead of the last describe() call.

After the fix, The TypeEnum schema is properly flattened in all places that reference it.

Fix 2: add tsConfigFilePath to module config.

See issue: #18

Fix 3: Flatten enum name to literal values.

An example:

// types.ts
export enum TypeEnum { Normal = 'Normal', Unknown = 'Unknown' };

// test.ts
import { z } from 'zod';
import { TypeEnum } from './types';

const FindManyInput = z.object({
  options: z
    .object({
      userId: z.string().describe('ID of the current user'),
      type: z.literal(TypeEnum.Normal).describe('Type of the item')
    })
    .describe('Options to find many items'),
});

Before the fix, it generates: type: z.literal(export enum TypeEnum { Normal = 'Normal', Unknown = 'Unknown' }).describe('Type of the item')

After the fix, it generates: type: z.literal('Normal').describe('Type of the item')

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[ewrogers]

I assume this would fix #18 with tsConfig paths not generating schemas? Definitely would like to see this merged if so!

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[josefmic]

Hello, I know there hasn't been any releases in a while and that @KevinEdry said that he's busy but planning on working on this repo - but it has been 6 months and still nothing - does anyone have info about this? Is there a fork of this library, if it has been abandoned? The zod schemas not being flattened is a big issue because it won't allow build without type errors...

[KevinEdry]

I've added some maintainers to this library recently so we should see those getting merged pretty soon.

[josefmic]

Wow, thank you for the info. This library is amazing and I appreciate your work very much!

[ewrogers]

Hello, I know there hasn't been any releases in a while and that @KevinEdry said that he's busy but planning on working on this repo - but it has been 6 months and still nothing - does anyone have info about this? Is there a fork of this library, if it has been abandoned? The zod schemas not being flattened is a big issue because it won't allow build without type errors...

This is also a big thing for me that I would like to see, so it will be one of the first PRs that I look into getting merged in.