JS: Format if statements with no else on a single line

test/codegen/expect/collection/src/queue_list.js

 dart_library.library('collection/src/queue_list', null, /* Imports */[
   "dart/_runtime",
   'dart/core',
   'dart/collection'
 ], /* Lazy imports */[
 ], function(exports, dart, core, collection) {
   'use strict';
   let dartx = dart.dartx;
   const _head = Symbol('_head');
   const _tail = Symbol('_tail');
   const _table = Symbol('_table');
   const _add = Symbol('_add');
   const _preGrow = Symbol('_preGrow');
   const _grow = Symbol('_grow');
   const _writeToList = Symbol('_writeToList');
   const QueueList$ = dart.generic(function(E) {
     class QueueList extends dart.mixin(core.Object, collection.ListMixin$(E)) {
       QueueList(initialCapacity) {
-        if (initialCapacity === void 0)
-          initialCapacity = null;
+        if (initialCapacity === void 0) initialCapacity = null;
         this[_head] = 0;
         this[_tail] = 0;
         this[_table] = null;
         if (initialCapacity == null || dart.notNull(initialCapacity) < dart.notNull(QueueList$()._INITIAL_CAPACITY)) {
           initialCapacity = QueueList$()._INITIAL_CAPACITY;
         } else if (!dart.notNull(QueueList$()._isPowerOf2(initialCapacity))) {
           initialCapacity = QueueList$()._nextPowerOf2(initialCapacity);
         }
         dart.assert(QueueList$()._isPowerOf2(initialCapacity));
         this[_table] = core.List$(E).new(initialCapacity);
@@ skipping 48 matching lines @@
         return collection.IterableBase.iterableToFullString(this, "{", "}");
       }
       addLast(element) {
         dart.as(element, E);
         this[_add](element);
       }
       addFirst(element) {
         dart.as(element, E);
         this[_head] = dart.notNull(this[_head]) - 1 & dart.notNull(this[_table][dartx.length]) - 1;
         this[_table][dartx.set](this[_head], element);
-        if (this[_head] == this[_tail])
-          this[_grow]();
+        if (this[_head] == this[_tail]) this[_grow]();
       }
       removeFirst() {
-        if (this[_head] == this[_tail])
-          dart.throw(new core.StateError("No element"));
+        if (this[_head] == this[_tail]) dart.throw(new core.StateError("No element"));
         let result = this[_table][dartx.get](this[_head]);
         this[_table][dartx.set](this[_head], null);
         this[_head] = dart.notNull(this[_head]) + 1 & dart.notNull(this[_table][dartx.length]) - 1;
         return result;
       }
       removeLast() {
-        if (this[_head] == this[_tail])
-          dart.throw(new core.StateError("No element"));
+        if (this[_head] == this[_tail]) dart.throw(new core.StateError("No element"));
         this[_tail] = dart.notNull(this[_tail]) - 1 & dart.notNull(this[_table][dartx.length]) - 1;
         let result = this[_table][dartx.get](this[_tail]);
         this[_table][dartx.set](this[_tail], null);
         return result;
       }
       get length() {
         return dart.notNull(this[_tail]) - dart.notNull(this[_head]) & dart.notNull(this[_table][dartx.length]) - 1;
       }
       set length(value) {
-        if (dart.notNull(value) < 0)
-          dart.throw(new core.RangeError(`Length ${value} may not be negative.`));
+        if (dart.notNull(value) < 0) dart.throw(new core.RangeError(`Length ${value} may not be negative.`));
         let delta = dart.notNull(value) - dart.notNull(this.length);
         if (dart.notNull(delta) >= 0) {
           if (dart.notNull(this[_table][dartx.length]) <= dart.notNull(value)) {
             this[_preGrow](value);
           }
           this[_tail] = dart.notNull(this[_tail]) + dart.notNull(delta) & dart.notNull(this[_table][dartx.length]) - 1;
           return;
         }
         let newTail = dart.notNull(this[_tail]) + dart.notNull(delta);
         if (dart.notNull(newTail) >= 0) {
@@ skipping 20 matching lines @@
         return value;
       }
       static _isPowerOf2(number) {
         return (dart.notNull(number) & dart.notNull(number) - 1) == 0;
       }
       static _nextPowerOf2(number) {
         dart.assert(dart.notNull(number) > 0);
         number = (dart.notNull(number) << 1) - 1;
         for (;;) {
           let nextNumber = dart.notNull(number) & dart.notNull(number) - 1;
-          if (nextNumber == 0)
-            return number;
+          if (nextNumber == 0) return number;
           number = nextNumber;
         }
       }
       [_add](element) {
         dart.as(element, E);
         this[_table][dartx.set](this[_tail], element);
         this[_tail] = dart.notNull(this[_tail]) + 1 & dart.notNull(this[_table][dartx.length]) - 1;
-        if (this[_head] == this[_tail])
-          this[_grow]();
+        if (this[_head] == this[_tail]) this[_grow]();
       }
       [_grow]() {
         let newTable = core.List$(E).new(dart.notNull(this[_table][dartx.length]) * 2);
         let split = dart.notNull(this[_table][dartx.length]) - dart.notNull(this[_head]);
         newTable[dartx.setRange](0, split, this[_table], this[_head]);
         newTable[dartx.setRange](split, dart.notNull(split) + dart.notNull(this[_head]), this[_table], 0);
         this[_head] = 0;
         this[_tail] = this[_table][dartx.length];
         this[_table] = newTable;
       }
@@ skipping 58 matching lines @@
       'length'
     ]);
     return QueueList;
   });
   let QueueList = QueueList$();
   QueueList._INITIAL_CAPACITY = 8;
   // Exports:
   exports.QueueList$ = QueueList$;
   exports.QueueList = QueueList;
 });