I'm currently working on an application in React-Native implementing Redux and Thunk and I stumbled across an error I can't figure out:

My view container ( The one that connect the component view with a mapStateTopProps and a mapDispatchToProps ) set a method named 'getAllEvents()' in my component props. Even if the method is defined as shown on the screenshot below, I get an undefined whenever I call it...

this.props.getAllEvents => [Function getAllEvents]
this.props.getAllEvents() => undefined


How can a defined function could return undefined when it is called?

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1 Answer
1

It is perfectly valid for a JavaScript function to return undefined. For example these two functions below are defined and they will return undefined when called:

undefined

undefined

function empty() {
}

function retUndefined() {
return undefined;
}

console.log(empty());
console.log(retUndefined());