addons-actions: option to return something

Is your feature request related to a problem? Please describe.

We have stories with callbacks that should return Promise.

storiesOf('Some Form', module).add('Default', () => (
  <Form initialValues={{}} onSubmit={action('Submit')} />
));

Form onSubmit prop: onSubmit: Promise<void>;

Describe the solution you’d like Option to specify a return value, either with a function or directly the value we want to return ?

storiesOf('Some Form', module).add('Default', () => (
  <Form initialValues={{}} onSubmit={action('Submit', { returnValue: Promise.resolve() )} />
));

storiesOf('Some Form', module).add('Default', () => (
  <Form initialValues={{}} onSubmit={action('Submit', { getReturnValue: (values) => Promise.resolve() )} />
));

I’m not sure about the naming

Describe alternatives you’ve considered

Allowing onSubmit return type to accept void.

Are you able to assist bring the feature to reality? yes, I can open a PR if it’s accepted

[jonfreedman]

I don’t think these workarounds work with the new actions approach (e.g. ‘action’ is not imported) - just hit this exact issue myself.

[iamxyzby]

You can try this:

const promiseAction = (msg) => (...args) => {
    action(msg)(...args)
    return Promise.resolve()
}

storiesOf('Some Form', module).add('Default', () => (
  <Form initialValues={{}} onSubmit={promiseAction('Submit1')} />
));

storiesOf('Some Form', module).add('Default', () => (
  <Form initialValues={{}} onSubmit={promiseAction('Other Submit')} />
));