@pothos/plugin-add-graphql/src/types.ts

A Pothos plugin for adding existing GraphQL types to a Pothos schema

import type {
  EnumValues,
  FieldMap,
  FieldRef,
  InputFieldRef,
  InputFieldsFromShape,
  NullableToOptional,
  ObjectParam,
  SchemaTypes,
} from '@pothos/core';

export type AddGraphQLObjectFieldsShape<Types extends SchemaTypes, Shape> = (
  t: PothosSchemaTypes.ObjectFieldBuilder<Types, Shape>,
) => Record<string, FieldRef<Types> | null>;

export type AddGraphQLInterfaceFieldsShape<Types extends SchemaTypes, Shape> = (
  t: PothosSchemaTypes.InterfaceFieldBuilder<Types, Shape>,
) => Record<string, FieldRef<Types> | null>;

export type AddGraphQLInputFieldsShape<Types extends SchemaTypes, Shape> = (
  t: PothosSchemaTypes.InputFieldBuilder<Types, 'InputObject'>,
) => Record<
  string,
  | (InputFieldRef<Types, unknown> & {
      [K in keyof Shape]?: InputFieldRef<Types, Shape[K]>;
    })
  | null
>;

export type OutputShapeFromFields<Fields extends FieldMap> = NullableToOptional<{
  [K in keyof Fields]: Fields[K] extends FieldRef<infer T> ? T : never;
}>;

export type AddGraphQLObjectTypeOptions<Types extends SchemaTypes, Shape> = Omit<
  PothosSchemaTypes.ObjectTypeOptions<Types, Shape>,
  'fields'
> & {
  name?: string;
  fields?: AddGraphQLObjectFieldsShape<Types, Shape>;
};

export interface AddGraphQLInterfaceTypeOptions<Types extends SchemaTypes, Shape>
  extends Omit<PothosSchemaTypes.InterfaceTypeOptions<Types, Shape>, 'fields'> {
  name?: string;
  fields?: AddGraphQLInterfaceFieldsShape<Types, Shape>;
}

export interface AddGraphQLUnionTypeOptions<
  Types extends SchemaTypes,
  Member extends ObjectParam<Types> = ObjectParam<Types>,
> extends Omit<PothosSchemaTypes.UnionTypeOptions<Types, Member>, 'types'> {
  name?: string;
  types?: Member[];
}

export interface AddGraphQLEnumTypeOptions<
  Types extends SchemaTypes,
  Values extends EnumValues<Types> = EnumValues<Types>,
> extends Omit<PothosSchemaTypes.EnumTypeOptions<Types, Values>, 'values'> {
  name?: string;
  values?: Values;
}

export interface AddGraphQLInputTypeOptions<Types extends SchemaTypes, Shape extends {}>
  extends Omit<
    PothosSchemaTypes.InputObjectTypeOptions<
      Types,
      InputFieldsFromShape<Types, Shape, 'InputObject'>
    >,
    'fields'
  > {
  name?: string;
  fields?: AddGraphQLInputFieldsShape<Types, Shape>;
}

export type EnumValuesWithShape<Types extends SchemaTypes, Shape> = EnumValues<Types> &
  (Record<string, { value: Shape }> | Shape[]);