Add special case for comment at top of file; regenerate snapshots

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

@@ -58,27 +58,24 @@ function from_test() {
 }
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 /* @flow */
-// Error
-/* Adapted from the following source:
-   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce
-   */
-/* Added later, because the above is insufficient */
-// acc is element type of array when no init is provided
-// error, string ~> number
-// error, string ~> number
 function foo(x: string) {}
+
 var a = [ 0 ];
 var b = a.map(function(x) {
   foo(x);
   return \"\" + x;
 });
+
 var c: number = a[0];
 var d: number = b[0];
+
 var e: Array<string> = a.reverse();
+
 var f = [ \"\" ];
 var g: number = f.map(function() {
   return 0;
 })[0];
+
 var h: Array<number> = [ 1, 2, 3 ];
 var i: Array<string> = [ \"a\", \"b\", \"c\" ];
 var j: Array<number | string> = h.concat(i);
@@ -86,25 +83,37 @@ var k: Array<number> = h.concat(h);
 var l: Array<number> = h.concat(1, 2, 3);
 var m: Array<number | string> = h.concat(\"a\", \"b\", \"c\");
 var n: Array<number> = h.concat(\"a\", \"b\", \"c\");
+// Error
 function reduce_test() {
+  /* Adapted from the following source:
+   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce
+   */
   [ 0, 1, 2, 3, 4 ].reduce(function(previousValue, currentValue, index, array) {
     return previousValue + currentValue + array[index];
   });
+
   [ 0, 1, 2, 3, 4 ].reduce(
     function(previousValue, currentValue, index, array) {
       return previousValue + currentValue + array[index];
     },
     10
   );
+
   var total = [ 0, 1, 2, 3 ].reduce(function(a, b) {
     return a + b;
   });
+
   var flattened = [ [ 0, 1 ], [ 2, 3 ], [ 4, 5 ] ].reduce(function(a, b) {
     return a.concat(b);
   });
+
+  /* Added later, because the above is insufficient */
+  // acc is element type of array when no init is provided
   [ \"\" ].reduce((acc, str) => acc * str.length);
-  [ \"\" ].reduceRight((acc, str) => acc * str.length);
+  // error, string ~> number
+  [ \"\" ].reduceRight((acc, str) => acc * str.length); // error, string ~> number
 }
+
 function from_test() {
   var a: Array<string> = Array.from([ 1, 2, 3 ], function(val, index) {
     return index % 2 ? \"foo\" : String(val);
@@ -112,6 +121,5 @@ function from_test() {
   var b: Array<string> = Array.from([ 1, 2, 3 ], function(val) {
     return String(val);
   });
-}
-"
+}"
 `;