export --format md --output dist/ produces dist/.md (and --output dist/slides.md fails)

[vorburger]

Describe the bug

I would like to Export PNGs and Markdown... primarily so that I can send a PR to https://github.com/slidevjs/docs/blob/main/.vitepress/showcases.ts with a cover: ... 😄

In order for e.g. that Cover PNG to be available, I want it to be in my dist/, along side the HTML app/site, and the PDF which I'm also putting there.

I've tried export --format md --output dist/ - but that produces a dist/.md - note the "empty" filename, which is a bit weird, agreed?

Using export --dark --format md --output dist/slides.md fails, like this:

●■▲
Slidev v0.49.29

theme @slidev/theme-seriph
css engine unocss
entry /workspaces/LearningMachineLearning/docs/prez/sli.dev/slides.md
▲ rendering...[Error: EISDIR: illegal operation on a directory, open 'dist/slides.md'] {
errno: -21,
code: 'EISDIR',
syscall: 'open',
path: 'dist/slides.md'
}

Environment

• Slidev version: 0.49.29

Proposal

Perhaps you would like consider permitting --output dist/slides.md and using that instead of defaulting to dist/.md ?

[vorburger]

Oh... wait; so: Using export --format md --output dist/png works! (The difference being it not ending in a trailing slash.)

That produces dist/png.md and dist/png/*.png - which makes sense, actually.

Perhaps you would consider handling --output with trailing slash, and automagically chopping it? Just an idea.

Or do you want a PR with an update for a note about this in the doc?

[vorburger]

Using export --format md --output dist/png works!

Actually, nope, that doesn't really "work" - the links in the MD are broken, they point to ./dist/png/1.png (instead of just png/1.png).

I'm working around this like this.