* ➕ add test fixture
* ➕ add removeTypeDuplicates for typescript
* ➕ add createTSUnionType for typescript
* 💊 fix ConditionalExpression for typescript
* 💊 fix ConditionalExpression
* 💊 fix added test case
* ➕ add new line at the end of the file
* 💊 types.every(f) => f(types[0])
* 🔄 bug => foo
* ➕ add TSBaseType
* ➕ add conditions NOT to break backward compatibility