Merge pull request #18077 from fwouts/regex-bug

Fix #18071: Printer failure when encountering RegularExpressionLiteral

src/compiler/utilities.ts

@@ -359,6 +359,7 @@ namespace ts {
             case SyntaxKind.TemplateTail:
                 return "}" + escapeText(node.text, CharacterCodes.backtick) + "`";
             case SyntaxKind.NumericLiteral:
+            case SyntaxKind.RegularExpressionLiteral:
                 return node.text;
         }
 

src/harness/unittests/printer.ts

@@ -56,6 +56,9 @@ namespace ts {
 
             // github #14948
             printsCorrectly("templateLiteral", {}, printer => printer.printFile(createSourceFile("source.ts", "let greeting = `Hi ${name}, how are you?`;", ScriptTarget.ES2017)));
+
+            // github #18071
+            printsCorrectly("regularExpressionLiteral", {}, printer => printer.printFile(createSourceFile("source.ts", "let regex = /abc/;", ScriptTarget.ES2017)));
         });
 
         describe("printBundle", () => {

tests/baselines/reference/printerApi/printsFileCorrectly.regularExpressionLiteral.js

@@ -0,0 +1 @@
+let regex = /abc/;