Unions are generate incorrect with arrays

[jonaslagoni]

Describe the bug

Given the following JSON schema input:

const jsonSchemaDraft7 = {
  $schema: 'http://json-schema.org/draft-07/schema#',
  type: 'object',
  additionalProperties: false,
  properties: {
    email: {
      anyOf: [
        {
          type: 'string'
        },
        {
          type: 'array',
          items: {
            type: 'number'
          }
        }
      ]
    }
  }
};

Generate the following TypeScript model:

class Root {
  private _email?: string | number | any[];

  constructor(input: {
    email?: string | number | any[],
  }) {
    this._email = input.email;
  }

  get email(): string | number | any[] | undefined { return this._email; }
  set email(email: string | number | any[] | undefined) { this._email = email; }
}

Looks like the schema for the array and the array items schema are somehow interpreted as two separate things.

Expected behavior

Expected the class to be:

class Root {
  private _email?: string | number[];

  constructor(input: {
    email?: string | number[],
  }) {
    this._email = input.email;
  }

  get email(): string | number[] | undefined { return this._email; }
  set email(email: string | number[] | undefined) { this._email = email; }
}