JS: More qldoc

javascript/ql/src/semmle/javascript/Expr.qll

@@ -410,7 +410,12 @@ class BigIntLiteral extends @bigintliteral, Literal {
 class StringLiteral extends @stringliteral, Literal {
   override string getStringValue() { result = getValue() }
 
-  /** Gets the value of this string literal parsed as a regular expression. */
+  /**
+   * Gets the value of this string literal parsed as a regular expression, if possible.
+   *
+   * All string literals have an associated regular expression tree, provided it can
+   * be parsed without syntax errors.
+   */
   RegExpTerm asRegExp() { this = result.getParent() }
 }
 

javascript/ql/src/semmle/javascript/Regexp.qll

@@ -855,6 +855,9 @@ abstract class RegExpPatternSource extends DataFlow::Node {
    */
   abstract DataFlow::SourceNode getARegExpObject();
 
+  /**
+   * Gets the root term of the regular expression parsed from this pattern.
+   */
   abstract RegExpTerm getRegExpTerm();
 }