How to use the @ephox/boulder.ValueSchema.string function in @ephox/boulder

tooltip: Option;
  icon: Option;
  items: DialogToggleMenuItem[];
  onSetup: (api: DialogMenuButtonInstanceApi) => (api: DialogMenuButtonInstanceApi) => void;
}

export type DialogButton = DialogNormalButton | DialogMenuButton;

const baseButtonFields = [
  FieldSchema.field(
    'name',
    'name',
    FieldPresence.defaultedThunk(() => {
      return Id.generate('button-name');
    }),
    ValueSchema.string
  ),
  FieldSchema.optionString('icon'),
  FieldSchema.defaultedStringEnum('align', 'end', ['start', 'end']),
  FieldSchema.defaultedBoolean('primary', false),
  FieldSchema.defaultedBoolean('disabled', false)
];

export const dialogButtonFields = [
  ...baseButtonFields,
  FieldSchema.strictString('text')
];

const normalButtonFields = [
  FieldSchema.strictStringEnum('type', ['submit', 'cancel', 'custom']),
  ...dialogButtonFields
];

inputMode: Option;
  placeholder: Option;
  maximized: boolean;
  disabled: boolean;
}

const inputFields = formComponentWithLabelFields.concat([
  FieldSchema.optionString('inputMode'),
  FieldSchema.optionString('placeholder'),
  FieldSchema.defaultedBoolean('maximized', false),
  FieldSchema.defaultedBoolean('disabled', false)
]);

export const inputSchema = ValueSchema.objOf(inputFields);

export const inputDataProcessor = ValueSchema.string;

export const createInput = (spec: InputApi): Result> => {
  return ValueSchema.asRaw<input>('input', inputSchema, spec);
};