Don't add trailing comma after object rest spread in TypeScript (#3313)

src/printer.js

@@ -1016,6 +1016,7 @@ function genericPrintNoParens(path, options, print, args) {
         lastElem &&
         (lastElem.type === "RestProperty" ||
           lastElem.type === "RestElement" ||
+          lastElem.type === "ExperimentalRestProperty" ||
           hasNodeIgnoreComment(lastElem))
       );
 

tests/typescript_trailing_comma/__snapshots__/jsfmt.spec.js.snap

@@ -10,6 +10,13 @@ enum Enum {
 	x = 1,
 	y = 2,
 }
+
+const {
+  longKeySoThisWillGoOnMultipleLines,
+  longKeySoThisWillGoOnMultipleLines2,
+  longKeySoThisWillGoOnMultipleLines3,
+  ...rest,
+} = something;
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 export class BaseSingleLevelProfileTargeting<
   T extends ValidSingleLevelProfileNode
@@ -20,4 +27,11 @@ enum Enum {
   y = 2,
 }
 
+const {
+  longKeySoThisWillGoOnMultipleLines,
+  longKeySoThisWillGoOnMultipleLines2,
+  longKeySoThisWillGoOnMultipleLines3,
+  ...rest
+} = something;
+
 `;

tests/typescript_trailing_comma/trailing.ts

@@ -7,3 +7,10 @@ enum Enum {
 	x = 1,
 	y = 2,
 }
+
+const {
+  longKeySoThisWillGoOnMultipleLines,
+  longKeySoThisWillGoOnMultipleLines2,
+  longKeySoThisWillGoOnMultipleLines3,
+  ...rest,
+} = something;