swc_ecma_codegen:
- Use span for `await` token.
- Use span for debugger statements.
- Use span for object literals.
- Use span for object patterns.
- Use span for array literals.
- Use span for `try`.
- Use span for `for`.
- Use span for `return`.
- Use span for `break`.
- Use span for `continue`.
- Use span for `this`.
- Use span for `switch`.
- Use span for `catch`.
- Use span for `case`.
- Use span for `function`.
- Use span for unary expressions.
swc_ecma_minifier:
- Normalize sequences expressions if the length is 1.