| Test 1: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test 2: |
| SyntaxError: Cannot declare a let variable twice: 'x'. |
| Test 3: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test 4: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test 5: |
| SyntaxError: Cannot declare a var variable that shadows a let/const/class variable: 'x'. |
| Test 6: |
| SyntaxError: Cannot declare a let variable twice: 'x'. |
| Test 7: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test 8: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test 9: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test a1: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test a2: |
| SyntaxError: Cannot declare a let variable twice: 'x'. |
| Test a3: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test a4: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test a5: |
| SyntaxError: Cannot declare a var variable that shadows a let/const/class variable: 'x'. |
| Test a6: |
| SyntaxError: Cannot declare a let variable twice: 'x'. |
| Test a7: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test a8: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test a9: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test b1: |
| SyntaxError: Cannot declare a const variable twice: 'x'. |
| Test b2: |
| SyntaxError: Cannot declare a let variable twice: 'x'. |
| Test b3: |
| SyntaxError: Cannot declare a let variable twice: 'x'. |