tests/cases/conformance/parser/ecmascript5/parser15.4.4.14-9-2.ts(16,42): error TS2345: Argument of type '"0"' is not assignable to parameter of type 'boolean'. tests/cases/conformance/parser/ecmascript5/parser15.4.4.14-9-2.ts(17,17): error TS2345: Argument of type 'number' is not assignable to parameter of type 'boolean'. tests/cases/conformance/parser/ecmascript5/parser15.4.4.14-9-2.ts(18,17): error TS2345: Argument of type '0' is not assignable to parameter of type 'boolean'. tests/cases/conformance/parser/ecmascript5/parser15.4.4.14-9-2.ts(19,17): error TS2345: Argument of type '0' is not assignable to parameter of type 'boolean'. tests/cases/conformance/parser/ecmascript5/parser15.4.4.14-9-2.ts(20,17): error TS2345: Argument of type '1' is not assignable to parameter of type 'boolean'. tests/cases/conformance/parser/ecmascript5/parser15.4.4.14-9-2.ts(25,1): error TS2304: Cannot find name 'runTestCase'. ==== tests/cases/conformance/parser/ecmascript5/parser15.4.4.14-9-2.ts (6 errors) ==== /// Copyright (c) 2012 Ecma International. All rights reserved. /// Ecma International makes this code available under the terms and conditions set /// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the /// "Use Terms"). Any redistribution of this code must retain the above /// copyright and this notice and otherwise comply with the Use Terms. /** * @path ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-9-2.js * @description Array.prototype.indexOf must return correct index (Number) */ function testcase() { var obj = {toString:function (){return 0}}; var one = 1; var _float = -(4/3); var a = new Array(false,undefined,null,"0",obj,-1.3333333333333, "str",-0,true,+0, one, 1,0, false, _float, -(4/3)); ~~~ !!! error TS2345: Argument of type '"0"' is not assignable to parameter of type 'boolean'. if (a.indexOf(-(4/3)) === 14 && // a[14]=_float===-(4/3) ~~~~~~ !!! error TS2345: Argument of type 'number' is not assignable to parameter of type 'boolean'. a.indexOf(0) === 7 && // a[7] = +0, 0===+0 ~ !!! error TS2345: Argument of type '0' is not assignable to parameter of type 'boolean'. a.indexOf(-0) === 7 && // a[7] = +0, -0===+0 ~~ !!! error TS2345: Argument of type '0' is not assignable to parameter of type 'boolean'. a.indexOf(1) === 10 ) // a[10] =one=== 1 ~ !!! error TS2345: Argument of type '1' is not assignable to parameter of type 'boolean'. { return true; } } runTestCase(testcase); ~~~~~~~~~~~ !!! error TS2304: Cannot find name 'runTestCase'.