Function boa::builtins::string::to_uppercase

pub fn to_uppercase(
    this: &mut Value, 
    _: &[Value], 
    ctx: &mut Interpreter
) -> ResultValue

String.prototype.toUpperCase()

The toUpperCase() method returns the calling string value converted to uppercase.

The value will be converted to a string if it isn't one

More information:

• ECMAScript reference
• MDN documentation