From 97fe5cd7f68f4847007260086c5dad0b033a0435 Mon Sep 17 00:00:00 2001
From: Ben McCann <322311+benmccann@users.noreply.github.com>
Date: Wed, 16 Nov 2022 10:46:00 -0800
Subject: [PATCH 1/3] [feat] warn if svelte not found in dependencies or
 peerDependencies

---
 .changeset/gentle-rocks-run.md |  5 +++++
 packages/package/src/index.js  | 17 +++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 .changeset/gentle-rocks-run.md

diff --git a/.changeset/gentle-rocks-run.md b/.changeset/gentle-rocks-run.md
new file mode 100644
index 000000000000..5730b5b8f60d
--- /dev/null
+++ 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
index d751537bf1cf..6c532c371700 100644
--- a/packages/package/src/index.js
+++ b/packages/package/src/index.js
@@ -32,6 +32,10 @@ export async function build(config, cwd = process.cwd()) {
 
 	const pkg = generate_pkg(cwd, files);
 
+	if (!has_svelte(pkg.dependencies) && !has_svelte(pkg.peerDependencies)) {
+		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.
@@ -82,6 +86,19 @@ export async function build(config, cwd = process.cwd()) {
 	console.log(colors.bold().cyan('  npm publish\n'));
 }
 
+/** @param {object} field */
+function has_svelte(field) {
+	if (!field) {
+		return false;
+	}
+	for (const key of Object.keys(field)) {
+		if (key === 'svelte') {
+			return true;
+		}
+	}
+	return false;
+}
+
 /**
  * @param {import('./types').ValidatedConfig} config
  */

From 928b9c7b5195a2dd508163172d0fd010dfa26e51 Mon Sep 17 00:00:00 2001
From: Ben McCann <322311+benmccann@users.noreply.github.com>
Date: Wed, 16 Nov 2022 10:53:20 -0800
Subject: [PATCH 2/3] simplify

---
 packages/package/src/index.js | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/packages/package/src/index.js b/packages/package/src/index.js
index 6c532c371700..65c4bdfeee1a 100644
--- a/packages/package/src/index.js
+++ b/packages/package/src/index.js
@@ -32,7 +32,7 @@ export async function build(config, cwd = process.cwd()) {
 
 	const pkg = generate_pkg(cwd, files);
 
-	if (!has_svelte(pkg.dependencies) && !has_svelte(pkg.peerDependencies)) {
+	if (!pkg.dependencies?.svelte && !pkg.peerDependencies?.svelte) {
 		console.warn('Svelte libraries should include "svelte" in either "dependencies" or "peerDependencies".');
 	}
 
@@ -86,19 +86,6 @@ export async function build(config, cwd = process.cwd()) {
 	console.log(colors.bold().cyan('  npm publish\n'));
 }
 
-/** @param {object} field */
-function has_svelte(field) {
-	if (!field) {
-		return false;
-	}
-	for (const key of Object.keys(field)) {
-		if (key === 'svelte') {
-			return true;
-		}
-	}
-	return false;
-}
-
 /**
  * @param {import('./types').ValidatedConfig} config
  */

From 54f96fc8c501f51c2108c8f3051ea4c1bb1f35e4 Mon Sep 17 00:00:00 2001
From: Ben McCann <322311+benmccann@users.noreply.github.com>
Date: Wed, 16 Nov 2022 10:53:32 -0800
Subject: [PATCH 3/3] format

---
 packages/package/src/index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/package/src/index.js b/packages/package/src/index.js
index 65c4bdfeee1a..e7af57df8140 100644
--- a/packages/package/src/index.js
+++ b/packages/package/src/index.js
@@ -33,7 +33,9 @@ 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".');
+		console.warn(
+			'Svelte libraries should include "svelte" in either "dependencies" or "peerDependencies".'
+		);
 	}
 
 	if (!pkg.svelte && files.some((file) => file.is_svelte)) {