[feat] warn if svelte not found in dependencies or peerDependencies (#…

…7685)
sveltejs · Nov 16, 2022 · 689f6d0 · 689f6d0
1 parent e12e2fb
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diff --git a/.changeset/gentle-rocks-run.md b/.changeset/gentle-rocks-run.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/package': patch
+---
+
+[feat] warn if svelte not found in dependencies or peerDependencies
diff --git a/packages/package/src/index.js b/packages/package/src/index.js
@@ -32,6 +32,12 @@ export async function build(config, cwd = process.cwd()) {
 
 	const pkg = generate_pkg(cwd, files);
 
+	if (!pkg.dependencies?.svelte && !pkg.peerDependencies?.svelte) {
+		console.warn(
+			'Svelte libraries should include "svelte" in either "dependencies" or "peerDependencies".'
+		);
+	}
+
 	if (!pkg.svelte && files.some((file) => file.is_svelte)) {
 		// Several heuristics in Kit/vite-plugin-svelte to tell Vite to mark Svelte packages
 		// rely on the "svelte" property. Vite/Rollup/Webpack plugin can all deal with it.