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YAML Anchor Expander

Resolve YAML anchors and aliases into fully inlined YAML without references.

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Expand YAML anchors and aliases

Parse YAML that uses &anchors and *aliases, then emit a new document with values fully inlined and no merge keys or references.

Related: YAML Parser and YAML Validator.

Frequently Asked Questions

Are merge keys like <<: *anchor supported?

Yes. The expander resolves anchors during parsing, then dumps plain YAML without references.