Remove always-on --harmony-rest-parameters flag

test/mjsunit/harmony/rest-params.js

-// Copyright 2014 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-rest-parameters
-
-(function testRestIndex() {
-  assertEquals(5, (function(...args) { return args.length; })(1,2,3,4,5));
-  assertEquals(4, (function(a, ...args) { return args.length; })(1,2,3,4,5));
-  assertEquals(3, (function(a, b, ...args) { return args.length; })(1,2,3,4,5));
-  assertEquals(2, (function(a, b, c, ...args) {
-                      return args.length; })(1,2,3,4,5));
-  assertEquals(1, (function(a, b, c, d, ...args) {
-                      return args.length; })(1,2,3,4,5));
-  assertEquals(0, (function(a, b, c, d, e, ...args) {
-                    return args.length; })(1,2,3,4,5));
-})();
-
-
-var strictTest = (function() {
-  "use strict";
-  return function strictTest(a, b, ...c) {
-    assertEquals(Array, c.constructor);
-    assertTrue(Array.isArray(c));
-
-    var expectedLength = arguments.length >= 3 ? arguments.length - 2 : 0;
-    assertEquals(expectedLength, c.length);
-
-    for (var i = 2, j = 0; i < arguments.length; ++i) {
-      assertEquals(c[j++], arguments[i]);
-    }
-  };
-})();
-
-
-function sloppyTest(a, b, ...c) {
-  assertEquals(Array, c.constructor);
-  assertTrue(Array.isArray(c));
-
-  var expectedLength = arguments.length >= 3 ? arguments.length - 2 : 0;
-  assertEquals(expectedLength, c.length);
-
-  for (var i = 2, j = 0; i < arguments.length; ++i) {
-    assertEquals(c[j++], arguments[i]);
-  }
-}
-
-
-var O = {
-  strict: strictTest,
-  sloppy: sloppyTest
-};
-
-(function testStrictRestParamArity() {
-  assertEquals(2, strictTest.length);
-  assertEquals(2, O.strict.length);
-})();
-
-
-(function testRestParamsStrictMode() {
-  strictTest();
-  strictTest(1, 2);
-  strictTest(1, 2, 3, 4, 5, 6);
-  strictTest(1, 2, 3);
-  O.strict();
-  O.strict(1, 2);
-  O.strict(1, 2, 3, 4, 5, 6);
-  O.strict(1, 2, 3);
-})();
-
-
-(function testRestParamsStrictModeApply() {
-  strictTest.apply(null, []);
-  strictTest.apply(null, [1, 2]);
-  strictTest.apply(null, [1, 2, 3, 4, 5, 6]);
-  strictTest.apply(null, [1, 2, 3]);
-  O.strict.apply(O, []);
-  O.strict.apply(O, [1, 2]);
-  O.strict.apply(O, [1, 2, 3, 4, 5, 6]);
-  O.strict.apply(O, [1, 2, 3]);
-})();
-
-
-(function testRestParamsStrictModeCall() {
-  strictTest.call(null);
-  strictTest.call(null, 1, 2);
-  strictTest.call(null, 1, 2, 3, 4, 5, 6);
-  strictTest.call(null, 1, 2, 3);
-  O.strict.call(O);
-  O.strict.call(O, 1, 2);
-  O.strict.call(O, 1, 2, 3, 4, 5, 6);
-  O.strict.call(O, 1, 2, 3);
-})();
-
-
-(function testsloppyRestParamArity() {
-  assertEquals(2, sloppyTest.length);
-  assertEquals(2, O.sloppy.length);
-})();
-
-
-(function testRestParamssloppyMode() {
-  sloppyTest();
-  sloppyTest(1, 2);
-  sloppyTest(1, 2, 3, 4, 5, 6);
-  sloppyTest(1, 2, 3);
-  O.sloppy();
-  O.sloppy(1, 2);
-  O.sloppy(1, 2, 3, 4, 5, 6);
-  O.sloppy(1, 2, 3);
-})();
-
-
-(function testRestParamssloppyModeApply() {
-  sloppyTest.apply(null, []);
-  sloppyTest.apply(null, [1, 2]);
-  sloppyTest.apply(null, [1, 2, 3, 4, 5, 6]);
-  sloppyTest.apply(null, [1, 2, 3]);
-  O.sloppy.apply(O, []);
-  O.sloppy.apply(O, [1, 2]);
-  O.sloppy.apply(O, [1, 2, 3, 4, 5, 6]);
-  O.sloppy.apply(O, [1, 2, 3]);
-})();
-
-
-(function testRestParamssloppyModeCall() {
-  sloppyTest.call(null);
-  sloppyTest.call(null, 1, 2);
-  sloppyTest.call(null, 1, 2, 3, 4, 5, 6);
-  sloppyTest.call(null, 1, 2, 3);
-  O.sloppy.call(O);
-  O.sloppy.call(O, 1, 2);
-  O.sloppy.call(O, 1, 2, 3, 4, 5, 6);
-  O.sloppy.call(O, 1, 2, 3);
-})();
-
-
-(function testUnmappedArguments() {
-  // Strict/Unmapped arguments should always be used for functions with rest
-  // parameters
-  assertThrows(function(...rest) { return arguments.caller; }, TypeError);
-  assertThrows(function(...rest) { return arguments.callee; }, TypeError);
-  // TODO(caitp): figure out why this doesn't throw sometimes, even though the
-  //              getter always does =)
-  // assertThrows(function(...rest) { arguments.caller = 1; }, TypeError);
-  // assertThrows(function(...rest) { arguments.callee = 1; }, TypeError);
-})();
-
-
-(function testNoAliasArgumentsStrict() {
-  ((function() {
-    "use strict";
-    return (function strictF(a, ...rest) {
-              arguments[0] = 1;
-              assertEquals(3, a);
-              arguments[1] = 2;
-              assertArrayEquals([4, 5], rest);
-            });
-  })())(3, 4, 5);
-})();
-
-
-(function testNoAliasArgumentsSloppy() {
-  function sloppyF(a, ...rest) {
-    arguments[0] = 1;
-    assertEquals(3, a);
-    arguments[1] = 2;
-    assertArrayEquals([4, 5], rest);
-  }
-  sloppyF(3, 4, 5);
-})();
-
-
-(function testRestParamsWithNewTarget() {
-  "use strict";
-  class Base {
-    constructor(...a) {
-      this.base = a;
-      assertEquals(arguments.length, a.length);
-      var args = [];
-      for (var i = 0; i < arguments.length; ++i) {
-        args.push(arguments[i]);
-      }
-      assertEquals(args, a);
-    }
-  }
-  class Child extends Base {
-    constructor(...b) {
-      super(1, 2, 3);
-      this.child = b;
-      assertEquals(arguments.length, b.length);
-      var args = [];
-      for (var i = 0; i < arguments.length; ++i) {
-        args.push(arguments[i]);
-      }
-      assertEquals(args, b);
-    }
-  }
-
-  var c = new Child(1, 2, 3);
-  assertEquals([1, 2, 3], c.child);
-  assertEquals([1, 2, 3], c.base);
-})();
-
-(function TestDirectiveThrows() {
-  "use strict";
-
-  assertThrows(
-    function(){ eval("function(...rest){'use strict';}") }, SyntaxError);
-  assertThrows(function(){ eval("(...rest) => {'use strict';}") }, SyntaxError);
-  assertThrows(
-    function(){ eval("(class{foo(...rest) {'use strict';}});") }, SyntaxError);
-
-  assertThrows(
-    function(){ eval("function(a, ...rest){'use strict';}") }, SyntaxError);
-  assertThrows(
-    function(){ eval("(a, ...rest) => {'use strict';}") }, SyntaxError);
-  assertThrows(
-    function(){ eval("(class{foo(a, ...rest) {'use strict';}});") },
-    SyntaxError);
-})();