JavaScript: fix edge cases in type cast comment detection regex (#5793)

Fix edge cases involving {...} ([record @type](http://usejsdoc.org/tags-type.html)) and newlines in prettier's detection code for type cast comments

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

@@ -350,6 +350,32 @@ var newArray = /** @type {array} */ (numberOrString).map(x => x);
 var newArray = /** @type {array} */ ((numberOrString)).map(x => x);
 var newArray = /** @type {array} */ ((numberOrString).map(x => x));
 
+
+const data = functionCall(
+  arg1,
+  arg2,
+  /** @type {{height: number, width: number}} */ (arg3));
+
+// Invalid type casts
+const v = /** @type {} */ (value);
+const v = /** @type {}} */ (value);
+const v = /** @type } */ (value);
+const v = /** @type { */ (value);
+const v = /** @type {{} */ (value);
+
+const style = /** @type {{
+  width: number,
+  height: number,
+  marginTop: number,
+  marginLeft: number,
+  marginRight: number,
+  marginBottom: number,
+}} */ ({
+  width,
+  height,
+  ...margins,
+});
+
 =====================================output=====================================
 // test to make sure comments are attached correctly
 let inlineComment = /* some comment */ someReallyLongFunctionCall(
@@ -374,6 +400,32 @@ var newArray = /** @type {array} */ (numberOrString).map(x => x);
 var newArray = /** @type {array} */ (numberOrString).map(x => x);
 var newArray = /** @type {array} */ (numberOrString.map(x => x));
 
+const data = functionCall(
+  arg1,
+  arg2,
+  /** @type {{height: number, width: number}} */ (arg3)
+);
+
+// Invalid type casts
+const v = /** @type {} */ value;
+const v = /** @type {}} */ value;
+const v = /** @type } */ value;
+const v = /** @type { */ value;
+const v = /** @type {{} */ value;
+
+const style = /** @type {{
+  width: number,
+  height: number,
+  marginTop: number,
+  marginLeft: number,
+  marginRight: number,
+  marginBottom: number,
+}} */ ({
+  width,
+  height,
+  ...margins
+});
+
 ================================================================================
 `;
 

tests/comments/closure-compiler-type-cast.js

@@ -18,3 +18,29 @@ function returnValue() {
 var newArray = /** @type {array} */ (numberOrString).map(x => x);
 var newArray = /** @type {array} */ ((numberOrString)).map(x => x);
 var newArray = /** @type {array} */ ((numberOrString).map(x => x));
+
+
+const data = functionCall(
+  arg1,
+  arg2,
+  /** @type {{height: number, width: number}} */ (arg3));
+
+// Invalid type casts
+const v = /** @type {} */ (value);
+const v = /** @type {}} */ (value);
+const v = /** @type } */ (value);
+const v = /** @type { */ (value);
+const v = /** @type {{} */ (value);
+
+const style = /** @type {{
+  width: number,
+  height: number,
+  marginTop: number,
+  marginLeft: number,
+  marginRight: number,
+  marginBottom: number,
+}} */ ({
+  width,
+  height,
+  ...margins,
+});