tests/cases/compiler/file2.ts(1,1): error TS2449: The operand of an increment or decrement operator cannot be a constant. ==== tests/cases/compiler/file1.ts (0 errors) ==== const x = 0 ==== tests/cases/compiler/file2.ts (1 errors) ==== x++; ~ !!! error TS2449: The operand of an increment or decrement operator cannot be a constant.