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npm / prettier-plugin-hermes-parser

prettier-plugin-hermes-parser

What changed in prettier-plugin-hermes-parser 0.33 to 0.37, from its official release notes, upgrade guides and advisories. Sources checked 2026-11-15.

1 new APIs and options5 behavior and defaults1 tooling3 fixes and other

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

@unstale/cli 0.3.1 on npm

prettier-plugin-hermes-parser 0.371 changes

Fixes and other changes 1

prettier-plugin-hermes-parser 0.364 changes

Behavior and default changes 3

  • Formatting now supports async component declarations.

    0.36.1release notes

  • Formatting now supports async hook declarations.

    0.36.1release notes

  • The parser now supports new Flow variance syntax.

    0.36.0release notes

Fixes and other changes 1

  • The parser now supports the declarations array for DeclareVariable declarations.

    0.36.0release notes

prettier-plugin-hermes-parser 0.351 changes

Tooling 1

  • Supports readonly as a Flow variance annotation, equivalent to + (covariant/read-only).

    0.35.0release notes

prettier-plugin-hermes-parser 0.342 changes

New APIs and options 1

  • Adds support for Flow’s keyof operator, which replaces $Keys.

    0.34.0release notes

Fixes and other changes 1

  • Fixed accidental whitespace removal by the autoformatter that caused Prettier to add unnecessary new lines.

    0.34.1release notes

prettier-plugin-hermes-parser 0.332 changes

Behavior and default changes 2