Add mdx filter

[kwaa]

Description

This PR adds an mdx Filter to the MDX plugin.

Check List

• Have you read the
  CODE OF CONDUCT
• Have you read the document
  CONTRIBUTING
  • One pull request per feature. If you want to do more than one thing,
    send multiple pull request.
  • Write tests.
  • Run deno fmt to fix the code format before commit.
  • Document any change in the CHANGELOG.md.

[oscarotero]

Sorry for the late response. It looks great!
Can you include a test example?

You can take the vto test as example: https://github.com/lumeland/lume/blob/main/tests/assets/vento/vto-filter.page.js

[kwaa]

Can you include a test example?

I added an example, but I'm not quite sure how filename works though.

lume/plugins/mdx.ts

Lines 150 to 154 in a5430a4

	const filter = async (
	content: string,
	data?: Record<string, unknown>,
	): Promise<string> =>
	(await engine.render(content, data, "filter.mdx")).toString().trim();

[oscarotero]

@kwaa In this case it's undefined because it's not a real file.

[kwaa]

In this case it's undefined because it's not a real file.

If use undefined, it will report error:

Build a mdx site => ./tests/mdx.test.ts:5:6
error: Error: Error rendering the page: /mdx-filter.page.ts
            throw new Error(`Error rendering the page: ${page.sourcePath}`, {
                  ^
    ...
Caused by: TypeError: Path must be a string. Received undefined
    ...

[oscarotero]

Hmm, okay. It must be here: https://github.com/lumeland/lume/blob/main/plugins/mdx.ts#L73
Not sure if baseUrl is mandatory for mdx. If it is, maybe it can changed to:

const baseUrl = toFileUrl(join(this.baseUrl, filename || "")).href;

[kwaa]

Not sure if baseUrl is mandatory for mdx. If it is, maybe it can changed to:

const baseUrl = toFileUrl(join(this.baseUrl, filename || "")).href;

Changing to this works fine:

- const baseUrl = toFileUrl(join(this.baseUrl, filename || "")).href;
+ const baseUrl = toFileUrl(join(this.baseUrl, filename || "/")).href;

Using an empty string will cause the JSX import to fail.

[oscarotero]

Great. Good work, thanks you!!