Function write_hook_dispatch 

pub fn write_hook_dispatch(
    hooks_directory: &Path,
    plan: &HookDispatchPlan,
    executable: &Path,
) -> Result<(), HookEntryError>

What: Create a new hooks directory holding the plan and one entry per preparation event. Why: The incumbent’s writeHookShim, with native entries instead of a Node program: post-commit has no entry, so it never runs during preparation. A configuration that defines no hook by name gets no entry at all: Git then finds nothing to start, which is what an entry would have done after re-entering this executable, taking the hook lock and running git hook run. The directory must not exist, so nothing half-written is reused.

In TS you’d write (pseudocode):

await writeHookShim({ hooksDirectory, plan, nodePath });