tests/cases/conformance/parser/ecmascript5/Statements/parserForStatement4.ts(1,6): error TS2304: Cannot find name 'a'. tests/cases/conformance/parser/ecmascript5/Statements/parserForStatement4.ts(1,6): error TS2405: The left-hand side of a 'for...in' statement must be of type 'string' or 'any'. tests/cases/conformance/parser/ecmascript5/Statements/parserForStatement4.ts(1,15): error TS2304: Cannot find name 'b'. ==== tests/cases/conformance/parser/ecmascript5/Statements/parserForStatement4.ts (3 errors) ==== for (a = 1 in b) { ~ !!! error TS2304: Cannot find name 'a'. ~~~~~ !!! error TS2405: The left-hand side of a 'for...in' statement must be of type 'string' or 'any'. ~ !!! error TS2304: Cannot find name 'b'. }