* parser: Add caret as topic reference (tests) * parser: Add caret as topic reference (implement) * generator: Avoid reconstructing validTopicTokenSet * babel-parser: Remove redundant throws in expression.js * Minimize diff * Update error message Co-authored-by: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>
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Co-authored-by: Federico Ciardi <fed.ciardi@gmail.com>