Bug 1435813 - Enable Array.prototype.flat and Array.prototype.flatMap in release builds. r=till

--HG--
extra : rebase_source : adc7e839e4d241857a89df6c6669c241a14466da

js/src/builtin/Array.cpp

@@ -3553,10 +3553,9 @@ static const JSFunctionSpec array_methods[] = {
     /* ES7 additions */
     JS_SELF_HOSTED_FN("includes",    "ArrayIncludes",    2,0),
 
-#ifdef NIGHTLY_BUILD
+    /* Future additions */
     JS_SELF_HOSTED_FN("flatMap",     "ArrayFlatMap",     1,0),
     JS_SELF_HOSTED_FN("flat",        "ArrayFlat",        0,0),
-#endif
 
     JS_FS_END
 };

js/src/tests/jstests.list

@@ -46,11 +46,6 @@ skip-if(!this.hasOwnProperty("SharedArrayBuffer")) script non262/SIMD/load-sab-b
 skip-if(!this.hasOwnProperty("Atomics")) include test262/built-ins/Atomics/jstests.list
 skip-if(!this.hasOwnProperty("SharedArrayBuffer")) include test262/built-ins/SharedArrayBuffer/jstests.list
 
-# flatMap and flatten are Nightly-only
-skip-if(!Array.prototype.flatMap) include test262/built-ins/Array/prototype/flatMap/jstests.list
-skip-if(!Array.prototype.flat) include test262/built-ins/Array/prototype/flat/jstests.list
-
-
 #####################################
 # Test262 tests disabled on browser #
 #####################################

js/xpconnect/tests/chrome/test_xrayToJS.xul

@@ -201,10 +201,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=933681
       "pop", "shift", "unshift", "splice", "concat", "slice", "lastIndexOf", "indexOf",
       "includes", "forEach", "map", "reduce", "reduceRight", "filter", "some", "every", "find",
       "findIndex", "copyWithin", "fill", Symbol.iterator, Symbol.unscopables, "entries", "keys",
-      "values", "constructor"];
-  if (isNightlyBuild) {
-    gPrototypeProperties['Array'].push("flat", "flatMap");
-  }
+      "values", "constructor", "flat", "flatMap"];
   gConstructorProperties['Array'] =
     constructorProps(["join", "reverse", "sort", "push", "pop", "shift",
                       "unshift", "splice", "concat", "slice", "isArray",