Boa 0.9.0

Boa is a Javascript lexer, parser and Just-in-Time compiler written in Rust. Currently, it has support for some of the language.
Documentation 
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use super::{Executable, Interpreter};
use crate::{builtins::value::ResultValue, syntax::ast::node::identifier::Identifier};

impl Executable for Identifier {
    fn run(&self, interpreter: &mut Interpreter) -> ResultValue {
        interpreter
            .realm()
            .environment
            .get_binding_value(self.as_ref())
            .ok_or_else(|| interpreter.construct_reference_error(self.as_ref()))
    }
}