Type '() => string' is not assignable to type 'string' in typescript

When I set following function,

const getIrohaTransaction:string = () =>{
    return "test";

following errors are alerted.

Type '() => string' is not assignable to type 'string'.
I still couldn’t understand the root cause of this error. What is the wrong point of this?If someone has opinion,please let me know. thanks

>Solution :

Empty input param is missing in your type definition:

const getIrohaTransaction: () => string = () =>{
    return "test";

In your case the getIrohaTransaction variable is defined as string whereas it should be marked as () => string which means a function that takes no arguments and returns a string.

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