fix: add src path to gh edit link (#783)

4 files changed, 11 insertions, 4 deletions

diff --git a/.changeset/breezy-owls-roll.md b/.changeset/breezy-owls-roll.md
new file mode 100644
index 00000000..7380eca4
--- /dev/null
+++ b/.changeset/breezy-owls-roll.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/starlight': patch
+---
+
+Fix GitHub edit link to include src path from project config
diff --git a/packages/starlight/components/EditLink.astro b/packages/starlight/components/EditLink.astro
index ce400867..4de01348 100644
--- a/packages/starlight/components/EditLink.astro
+++ b/packages/starlight/components/EditLink.astro
@@ -1,6 +1,7 @@
 ---
 import type { CollectionEntry } from 'astro:content';
 import config from 'virtual:starlight/user-config';
+import project from 'virtual:starlight/project-context';
 import { useTranslations } from '../utils/translations';
 import Icon from '../user-components/Icon.astro';
 
@@ -12,6 +13,7 @@ interface Props {
 
 const t = useTranslations(Astro.props.locale);
 const { editUrl } = Astro.props.data;
+const srcPath = project.srcDir.replace(project.root, '');
 
 let { baseUrl } = config.editLink;
 if (baseUrl && baseUrl.at(-1) !== '/') baseUrl += '/';
@@ -20,7 +22,7 @@ const url =
 	typeof editUrl === 'string'
 		? editUrl
 		: baseUrl
-		? baseUrl + 'src/content/docs/' + Astro.props.id
+		? baseUrl + srcPath + 'content/docs/' + Astro.props.id
 		: undefined;
 ---
 
diff --git a/packages/starlight/integrations/virtual-user-config.ts b/packages/starlight/integrations/virtual-user-config.ts
index f965833d..86c2b2a4 100644
--- a/packages/starlight/integrations/virtual-user-config.ts
+++ b/packages/starlight/integrations/virtual-user-config.ts
@@ -10,7 +10,7 @@ function resolveVirtualModuleId<T extends string>(id: T): `\0${T}` {
 /** Vite plugin that exposes Starlight user config and project context via virtual modules. */
 export function vitePluginStarlightUserConfig(
 	opts: StarlightConfig,
-	{ root }: Pick<AstroConfig, 'root'>
+	{ root, srcDir }: Pick<AstroConfig, 'root' | 'srcDir'>
 ): NonNullable<ViteUserConfig['plugins']>[number] {
 	const resolveId = (id: string) =>
 		JSON.stringify(id.startsWith('.') ? resolve(fileURLToPath(root), id) : id);
@@ -18,7 +18,7 @@ export function vitePluginStarlightUserConfig(
 	/** Map of virtual module names to their code contents as strings. */
 	const modules = {
 		'virtual:starlight/user-config': `export default ${JSON.stringify(opts)}`,
-		'virtual:starlight/project-context': `export default ${JSON.stringify({ root })}`,
+		'virtual:starlight/project-context': `export default ${JSON.stringify({ root, srcDir })}`,
 		'virtual:starlight/user-css': opts.customCss.map((id) => `import ${resolveId(id)};`).join(''),
 		'virtual:starlight/user-images': opts.logo
 			? 'src' in opts.logo
diff --git a/packages/starlight/virtual.d.ts b/packages/starlight/virtual.d.ts
index 1e031828..1230c460 100644
--- a/packages/starlight/virtual.d.ts
+++ b/packages/starlight/virtual.d.ts
@@ -3,7 +3,7 @@ declare module 'virtual:starlight/user-config' {
 	export default Config;
 }
 declare module 'virtual:starlight/project-context' {
-	export default { root: string };
+	export default { root: string, srcDir: string };
 }
 
 declare module 'virtual:starlight/user-css' {}