[MDX] Extend Markdown plugin config, with customization options (#4504)

* test: new combined remark / rehype suite

* fix: use with-plugins fixture

* chore: remove old mdx plugin tests

* docs: add JS docs

* docs: update README with thorough example

* chore: changeset

* fix: add "extends" error message

* fix: ignore string-based plugins in md

* feat: add warning log for string plugins

* docs: highlight `extendPlugins`

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

* nit: highlight "extendPlugins"

* fix: md plugins type check

* chore: "defaults" -> "astroDefaults"

* nit: info log when inheriting markdown plugins

* refactor: one big log on new behavior

* dan: dan nit

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

1 files changed, 0 insertions, 62 deletions

diff --git a/packages/integrations/mdx/test/mdx-remark-plugins.test.js b/packages/integrations/mdx/test/mdx-remark-plugins.test.js
deleted file mode 100644
index dad976989..000000000
--- a/packages/integrations/mdx/test/mdx-remark-plugins.test.js
+++ /dev/null
@@ -1,62 +0,0 @@
-import mdx from '@astrojs/mdx';
-
-import { expect } from 'chai';
-import { parseHTML } from 'linkedom';
-import { loadFixture } from '../../../astro/test/test-utils.js';
-import remarkToc from 'remark-toc';
-
-const FIXTURE_ROOT = new URL('./fixtures/mdx-remark-plugins/', import.meta.url);
-
-describe('MDX remark plugins', () => {
-	it('supports custom remark plugins - TOC', async () => {
-		const fixture = await loadFixture({
-			root: FIXTURE_ROOT,
-			integrations: [
-				mdx({
-					remarkPlugins: [remarkToc],
-				}),
-			],
-		});
-		await fixture.build();
-
-		const html = await fixture.readFile('/with-toc/index.html');
-		const { document } = parseHTML(html);
-
-		const tocLink1 = document.querySelector('ul a[href="#section-1"]');
-		expect(tocLink1).to.not.be.null;
-	});
-
-	it('applies GitHub-flavored markdown by default', async () => {
-		const fixture = await loadFixture({
-			root: FIXTURE_ROOT,
-			integrations: [mdx()],
-		});
-		await fixture.build();
-
-		const html = await fixture.readFile('/with-gfm/index.html');
-		const { document } = parseHTML(html);
-
-		const autoGenLink = document.querySelector('a[href="https://example.com"]');
-		expect(autoGenLink).to.not.be.null;
-	});
-
-	it('preserves default GitHub-flavored markdown with "extends"', async () => {
-		const fixture = await loadFixture({
-			root: FIXTURE_ROOT,
-			integrations: [
-				mdx({
-					remarkPlugins: { extends: [remarkToc] },
-				}),
-			],
-		});
-		await fixture.build();
-
-		const html = await fixture.readFile('/with-toc/index.html');
-		const { document } = parseHTML(html);
-
-		const tocLink1 = document.querySelector('ul a[href="#section-1"]');
-		expect(tocLink1).to.not.be.null;
-		const autoGenLink = document.querySelector('a[href="https://handle-me-gfm.com"]');
-		expect(autoGenLink).to.not.be.null;
-	});
-});