rspec/rules/S3353/javascript/rule.adoc

Marking a variable that is unchanged after initialization ``++const++`` is an indication to future maintainers that "no this isn't updated, and it's not supposed to be". ``++const++`` should be used in these situations in the interests of code clarity.

== Noncompliant Code Example

----
function seek(input) {
  let target = 32;  // Noncompliant
  for (let i of input) {  // Noncompliant
    if (i == target) {
      return true;
    }
  }
  return false;
}

function getUrl(query) {    
  let url; // Noncompliant
  url = "http://example.com";
  return url; 
}
----

== Compliant Solution

----
function seek(input) {
  const target = 32;
  for (const i of input) {
    if (i == target) {
      return true;
    }
  }
  return false;
}

function getUrl(query) {  
  const url = "http://example.com";  
  return url; 
}
----