feature: add support of set/get in interfaces

lib/lines.ts

@@ -29,7 +29,10 @@ export class Lines {
   private cachedSourceMap: any = null;
   private cachedTabWidth: number | void = void 0;
 
-  constructor(private infos: LineInfo[], sourceFileName: string | null = null) {
+  constructor(
+    private infos: LineInfo[],
+    sourceFileName: string | null = null,
+  ) {
     invariant(infos.length > 0);
     this.length = infos.length;
     this.name = sourceFileName || null;

lib/printer.ts

@@ -712,8 +712,8 @@ function genericPrintNoParens(path: any, options: any, print: any) {
       const separator = options.flowObjectCommas
         ? ","
         : isTypeAnnotation
-        ? ";"
-        : ",";
+          ? ";"
+          : ",";
       const fields = [];
       let allowBreak = false;
 
@@ -2333,6 +2333,11 @@ function genericPrintNoParens(path: any, options: any, print: any) {
       return concat(parts);
 
     case "TSMethodSignature":
+      if (n.kind === "get") {
+        parts.push("get ");
+      } else if (n.kind === "set") {
+        parts.push("set ");
+      }
       if (n.computed) {
         parts.push("[", path.call(print, "key"), "]");
       } else {

test/jsx.ts

@@ -54,10 +54,13 @@ for (const { title, parser } of [
     });
 
     // Esprima does not parse JSX fragments: https://github.com/jquery/esprima/issues/2020
-    (/esprima/i.test(title)
-      ? xit
-      : it)("should parse and print fragments", function () {
-      check(["<>", "  <td>Hello</td>", "  <td>world!</td>", "</>"].join("\n"));
-    });
+    (/esprima/i.test(title) ? xit : it)(
+      "should parse and print fragments",
+      function () {
+        check(
+          ["<>", "  <td>Hello</td>", "  <td>world!</td>", "</>"].join("\n"),
+        );
+      },
+    );
   });
 }

test/typescript.ts

@@ -245,6 +245,13 @@ const nodeMajorVersion = parseInt(process.versions.node, 10);
       "}",
     ]);
 
+    check([
+      "interface LabelledContainer<T> {",
+      "  get label(): string;",
+      "  set label(a: string);",
+      "}",
+    ]);
+
     check([
       "interface Square<T, U> extends Shape<T, U>, Visible<T, U> {",
       "  sideLength: number;",