* remove unused codes
* refactor: remove unused parseAccessModifier
* refactor: remove redundant async function checks
* refactor: remove redundant class check in checkExport
* add more parser test cases
* Update packages/babel-parser/src/parser/statement.js
Co-authored-by: Brian Ng <bng412@gmail.com>
* chore: add sourceType: unambiguous test
Co-authored-by: Brian Ng <bng412@gmail.com>
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