JavaScript: Fix bug in extraction of `next_token`.

javascript/extractor/src/com/semmle/js/extractor/LexicalExtractor.java

@@ -133,7 +133,7 @@ public class LexicalExtractor {
 			locationManager.emitNodeLocation(token, key);
 
 			// fill in next_token relation
-			while (j < comments.size() && comments.get(j).getLoc().getEnd().compareTo(token.getLoc().getStart()) < 0)
+			while (j < comments.size() && comments.get(j).getLoc().getEnd().compareTo(token.getLoc().getStart()) <= 0)
 				trapwriter.addTuple("next_token", this.trapwriter.localID(comments.get(j++)), key);
 
 			// the parser sometimes duplicates tokens; skip the second one by nulling it out

javascript/extractor/src/com/semmle/js/extractor/Main.java

@@ -41,7 +41,7 @@ public class Main {
 	 * such a way that it may produce different tuples for the same file under the same
 	 * {@link ExtractorConfig}.
 	 */
-	public static final String EXTRACTOR_VERSION = "2019-01-17";
+	public static final String EXTRACTOR_VERSION = "2019-01-29";
 
 	public static final Pattern NEWLINE = Pattern.compile("\n");
 

javascript/ql/test/library-tests/Comments/next_token.expected

@@ -3,5 +3,5 @@
 | comments.js:3:7:3:29 | <!-- HT ... t start | comments.js:7:10:7:17 | function |
 | comments.js:4:1:4:18 | /** doc comment */ | comments.js:7:10:7:17 | function |
 | comments.js:5:1:5:20 | --> HTML comment end | comments.js:7:10:7:17 | function |
-| comments.js:7:1:7:9 | /*start*/ | comments.js:7:19:7:19 | f |
-| comments.js:7:24:7:30 | /*end*/ | comments.js:8:1:8:0 |  |
+| comments.js:7:1:7:9 | /*start*/ | comments.js:7:10:7:17 | function |
+| comments.js:7:24:7:30 | /*end*/ | comments.js:7:31:7:31 | } |