Add test for babel/babel#12054

sosukesuzuki · Oct 15, 2020 · cf0ed63 · cf0ed63
1 parent 7417d90
commit cf0ed63
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Showing 3 changed files with 29 additions and 1 deletion.
diff --git a/src/language-js/printer-estree.js b/src/language-js/printer-estree.js
@@ -913,7 +913,8 @@ function printPathNoParens(path, options, print, args) {
           parent.type === "DoWhileStatement" ||
           parent.type === "DoExpression" ||
           (parent.type === "CatchClause" && !parentParent.finalizer) ||
-          parent.type === "TSModuleDeclaration")
+          parent.type === "TSModuleDeclaration" ||
+          parent.type === "TSDeclareFunction")
       ) {
         return "{}";
       }

diff --git a/tests/typescript/declare/__snapshots__/jsfmt.spec.js.snap b/tests/typescript/declare/__snapshots__/jsfmt.spec.js.snap
@@ -72,6 +72,28 @@ declare function f([]?);
 ================================================================================
 `;
 
+exports[`declare_function_with_body.ts format 1`] = `
+====================================options=====================================
+parsers: ["typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+// Invalid, but recoverable
+declare function foo() {}
+declare function bar() {
+  // comment
+}
+
+=====================================output=====================================
+// Invalid, but recoverable
+declare function foo() {};
+declare function bar() {
+  // comment
+};
+
+================================================================================
+`;
+
 exports[`declare_interface.ts format 1`] = `
 ====================================options=====================================
 parsers: ["typescript"]

diff --git a/tests/typescript/declare/declare_function_with_body.ts b/tests/typescript/declare/declare_function_with_body.ts
@@ -0,0 +1,5 @@
+// Invalid, but recoverable
+declare function foo() {}
+declare function bar() {
+  // comment
+}