remark-lint-directive-unique-attribute-name

remark-lint rule that warns when directive attribute names are reused within the same directive. Version 1.0.1 is current stable, part of the remark-lint ecosystem. It checks that each attribute name in a directive (like `:planet[Venus]{aphelion=0.728213 perihelion=0.718440}`) appears only once. Unlike generic linting, this targets the unique syntax of directives, which are custom containers in markdown. Requires remark-lint and remark-directive to function. Ships TypeScript types. Released under MIT license.