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

Question

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

A function returning a string is not itself a string, no - that's not really a matter of opinion! Either the type of getIrohaTransaction needs to change entirely, or you need to move the : string to the return position. — jonrsharpe
– jonrsharpe, Commented Jul 27, 2022 at 10:21

mickl · Accepted Answer · 2022-07-27 10:20:13Z

2

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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answered Jul 27, 2022 at 10:20

mickl

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