Argument of type boolean is not assignableto paramter of type ‘string’ in typescript

Argument of type boolean is not assignable to parameter of type ‘string’ in TypeScript

If you are working with TypeScript, you may have encountered the error message “Argument of type boolean is not assignable to parameter of type ‘string’”. This error occurs when you try to pass a boolean value to a function or method that expects a string parameter. In this blog post, we will explore the possible solutions to this problem.

Solution 1: Convert the boolean value to a string

One way to resolve this error is to convert the boolean value to a string before passing it as an argument. TypeScript provides a built-in method called toString() that can be used to convert a boolean value to its string representation.

// Example code
const myBoolean: boolean = true;
const myString: string = myBoolean.toString();

// Output
console.log(myString); // "true"

In the above example, we first declare a boolean variable myBoolean with a value of true. We then use the toString() method to convert the boolean value to a string and assign it to the myString variable. Finally, we log the value of myString to the console, which will output "true".

Solution 2: Use a conditional statement

Another solution is to use a conditional statement to check the boolean value and assign a string value based on its truthiness. This can be done using the ternary operator (?).

// Example code
const myBoolean: boolean = true;
const myString: string = myBoolean ? 'true' : 'false';

// Output
console.log(myString); // "true"

In the above example, we declare a boolean variable myBoolean with a value of true. We then use a conditional statement to check the value of myBoolean. If it is true, we assign the string "true" to the variable myString; otherwise, we assign the string "false". Finally, we log the value of myString to the console, which will output "true".

By using either of the above solutions, you can successfully resolve the error “Argument of type boolean is not assignable to parameter of type ‘string’” in TypeScript. Remember to choose the solution that best fits your specific use case.

Happy coding!