ESM: Tidied up recently ported ops

src/core/lib/Code.mjs

@@ -1,18 +1,16 @@
 /**
- * Code functions.
+ * Code resources.
  *
  * @author n1474335 [n1474335@gmail.com]
- *
  * @copyright Crown Copyright 2018
  * @license Apache-2.0
- *
  */
 
 /**
  * This tries to rename variable names in a code snippet according to a function.
  *
  * @param {string} input
- * @param {function} replacer - this function will be fed the token which should be renamed.
+ * @param {function} replacer - This function will be fed the token which should be renamed.
  * @returns {string}
  */
 export function replaceVariableNames(input, replacer) {