markdownlint/helpers/README.md
2025-05-02 20:22:08 -07:00

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# markdownlint-rule-helpers
> A collection of `markdownlint` helper functions for custom rules
## Overview
The [Markdown][markdown] linter [`markdownlint`][markdownlint] offers a variety
of built-in validation [rules][rules] and supports the creation of [custom
rules][custom-rules]. The internal rules share various helper functions; this
package exposes those for reuse by custom rules.
## API
*Undocumented* - This package exports the internal functions as-is. The APIs
were not originally meant to be public, are not officially supported, and may
change from release to release. There are brief descriptive comments above each
function, but no [JSDoc][jsdoc] annotations. That said, some of what's here will
be useful to custom rule authors and may avoid duplicating code.
## Tests
*None* - The entire body of code is tested to 100% coverage by the core
`markdownlint` project, so there are no additional tests here.
[custom-rules]: https://github.com/DavidAnson/markdownlint/blob/v0.38.0/doc/CustomRules.md
[jsdoc]: https://en.m.wikipedia.org/wiki/JSDoc
[markdown]: https://en.wikipedia.org/wiki/Markdown
[markdownlint]: https://github.com/DavidAnson/markdownlint
[rules]: https://github.com/DavidAnson/markdownlint/blob/v0.38.0/doc/Rules.md