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One way to confirm that the value type is identical on both sides of the assignment is by using the "typeof" operator in JavaScript.

For example:

let a = 5;
let b = "5";

if (typeof a === typeof b) {
  console.log("The value types are identical");
} else {
  console.log("The value types are different");
}

In this example, the "typeof" operator is used to check if the value of "a" is of the same type as "b". If they are of the same type, the console will log "The value types are identical". If they are of different types, the console will log "The value types are different".