{ get: (error_message?: string | undefined) => () => string | undefined; get_maybe: () => (() => string | undefined) | undefined; set: (value: () => string | undefined) => () => string | undefined; } Context for providing a base path getter for resolving relative links in mdz content.
Set to a getter (e.g., () => base) so changes to the base prop are reflected
without needing an effect. When the getter returns a path like '/docs/mdz/',
relative paths like ./grammar resolve to /docs/mdz/grammar before rendering.
When not set, relative paths use raw hrefs (browser resolves them).