Remove parens around AwaitExpression in ternary (#346)

src/fast-path.js

@@ -298,7 +298,6 @@ FPp.needsParens = function(assumeExpressionContext) {
         case "SpreadElement":
         case "SpreadProperty":
         case "NewExpression":
-        case "ConditionalExpression":
         case "MemberExpression":
           return true;
 

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

@@ -550,3 +550,14 @@ async function g() {
 }
 "
 `;
+
+exports[`test conditional-expression.js 1`] = `
+"async function f() {
+  const result = typeof fn === \'function\' ? await fn() : null;
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+async function f() {
+  const result = typeof fn === \"function\" ? await fn() : null;
+}
+"
+`;

tests/async/conditional-expression.js

@@ -0,0 +1,3 @@
+async function f() {
+  const result = typeof fn === 'function' ? await fn() : null;
+}