tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(12,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(13,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(14,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(16,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(17,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(19,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(20,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(30,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(31,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(32,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(33,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(34,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(35,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(36,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(37,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(38,16): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(39,17): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(43,11): error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts(43,17): error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter ==== tests/cases/conformance/expressions/binaryOperators/inOperator/inOperatorWithInvalidOperands.ts (19 errors) ==== enum E { a } var x: any; // invalid left operands // the left operand is required to be of type Any, the String primitive type, or the Number primitive type var a1: boolean; var a2: void; var a3: {}; var a4: E var ra1 = a1 in x; ~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. var ra2 = a2 in x; ~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. var ra3 = a3 in x; ~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. var ra4 = a4 in x; var ra5 = null in x; ~~~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. var ra6 = undefined in x; ~~~~~~~~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. var ra7 = E.a in x; var ra8 = false in x; ~~~~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. var ra9 = {} in x; ~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. // invalid right operands // the right operand is required to be of type Any, an object type, or a type parameter type var b1: number; var b2: boolean; var b3: string; var b4: void; var b5: string | number; var rb1 = x in b1; ~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb2 = x in b2; ~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb3 = x in b3; ~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb4 = x in b4; ~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb5 = x in b5; ~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb6 = x in 0; ~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb7 = x in false; ~~~~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb8 = x in ''; ~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb9 = x in null; ~~~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter var rb10 = x in undefined; ~~~~~~~~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter // both operands are invalid var rc1 = {} in ''; ~~ !!! error TS2360: The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'. ~~ !!! error TS2361: The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter