JavaScript: Make extractor default to ECMA 2019.

Max Schaefer · Max Schaefer · commit 86a7fa3abba9 · 2019-05-10T08:09:46.000+01:00
Also introduces an enum constant for ECMA 2020 (not used anywhere yet).
diff --git a/change-notes/support/versions-compilers.csv b/change-notes/support/versions-compilers.csv
@@ -11,6 +11,6 @@ COBOL,ANSI 85 or newer [1]_.,Not applicable,"``.cbl``, ``.CBL``, ``.cpy``, ``.CP
 Java,"Java 6 to 11 [2]_.","javac (OpenJDK and Oracle JDK)
 
 Eclipse compiler for Java (ECJ) batch compiler",``.java``
-JavaScript,ECMAScript 2018 or lower,Not applicable,"``.js``, ``.jsx``, ``.mjs``, ``.es``, ``.es6``, ``.htm``, ``.html``, ``.xhm``, ``.xhtml``, ``.vue``, ``.json`` [3]_."
+JavaScript,ECMAScript 2019 or lower,Not applicable,"``.js``, ``.jsx``, ``.mjs``, ``.es``, ``.es6``, ``.htm``, ``.html``, ``.xhm``, ``.xhtml``, ``.vue``, ``.json`` [3]_."
 Python,"2.7, 3.5, 3.6, 3.7",Not applicable,``.py``
 TypeScript [4]_.,"2.6-3.4",Standard TypeScript compiler,"``.ts``, ``.tsx``"
diff --git a/javascript/extractor/src/com/semmle/jcorn/Options.java b/javascript/extractor/src/com/semmle/jcorn/Options.java
@@ -51,7 +51,7 @@ public void call(
   private Function<SyntaxError, ?> onRecoverableError;
 
   public Options() {
-    this.ecmaVersion = 7;
+    this.ecmaVersion = 10;
     this.sourceType = "script";
     this.onInsertedSemicolon = null;
     this.onTrailingComma = null;
diff --git a/javascript/extractor/src/com/semmle/js/extractor/ExtractorConfig.java b/javascript/extractor/src/com/semmle/js/extractor/ExtractorConfig.java
@@ -34,7 +34,8 @@ public static enum ECMAVersion {
     ECMA2016(2016, 7),
     ECMA2017(2017, 8),
     ECMA2018(2018, 9),
-    ECMA2019(2019, 10);
+    ECMA2019(2019, 10),
+    ECMA2020(2020, 11);
 
     private final int version;
     public final int legacyVersion;
@@ -236,7 +237,7 @@ public String toString() {
   private String defaultEncoding;
 
   public ExtractorConfig(boolean experimental) {
-    this.ecmaVersion = experimental ? ECMAVersion.ECMA2019 : ECMAVersion.ECMA2018;
+    this.ecmaVersion = experimental ? ECMAVersion.ECMA2020 : ECMAVersion.ECMA2019;
     this.platform = Platform.AUTO;
     this.jsx = true;
     this.sourceType = SourceType.AUTO;
