From 6059fcc5dcf99b39532f22b8f443ef6ddd8a861b Mon Sep 17 00:00:00 2001
From: Marvin Hagemeister <hello@marvinh.dev>
Date: Sat, 16 Jan 2021 23:01:31 +0100
Subject: [PATCH 1/2] Fail build on missing compat entries in files entry

---
 config/compat-entries.js | 25 +++++++++++++++++++++++++
 package.json             |  2 +-
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 config/compat-entries.js

diff --git a/config/compat-entries.js b/config/compat-entries.js
new file mode 100644
index 0000000000..6fd771b146
--- /dev/null
+++ b/config/compat-entries.js
@@ -0,0 +1,25 @@
+const path = require('path');
+const fs = require('fs');
+const kl = require('kolorist');
+
+const pkgFiles = new Set(require('../package.json').files);
+const compatDir = path.join(__dirname, '..', 'compat');
+const files = fs.readdirSync(compatDir);
+
+let missing = 0;
+for (const file of files) {
+	const expected = 'compat/' + file;
+	if (/\.(js|mjs)$/.test(file) && !pkgFiles.has(expected)) {
+		missing++;
+
+		const filePath = kl.cyan('compat/' + file);
+		const label = kl.inverse(kl.red(' ERROR '));
+		console.error(
+			`${label} File ${filePath} is missing in "files" entry in package.json`
+		);
+	}
+}
+
+if (missing > 0) {
+	process.exit(1);
+}
diff --git a/package.json b/package.json
index 64ab77128f..25ee57e3c9 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
 		"build:test-utils": "microbundle build --raw --cwd test-utils",
 		"build:compat": "microbundle build --raw --cwd compat --globals 'preact/hooks=preactHooks'",
 		"build:jsx": "microbundle build --raw --cwd jsx-runtime",
-		"postbuild": "node ./config/node-13-exports.js",
+		"postbuild": "node ./config/node-13-exports.js && node ./config/compat-entries.js",
 		"dev": "microbundle watch --raw --format cjs",
 		"dev:hooks": "microbundle watch --raw --format cjs --cwd hooks",
 		"dev:compat": "microbundle watch --raw --format cjs --cwd compat --globals 'preact/hooks=preactHooks'",

From dbe95b6a7912999f9fd1325190164930a594bc8f Mon Sep 17 00:00:00 2001
From: Marvin Hagemeister <hello@marvinh.dev>
Date: Sat, 16 Jan 2021 23:02:00 +0100
Subject: [PATCH 2/2] Add missing compat/test-utils.js files entry

---
 package.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package.json b/package.json
index 25ee57e3c9..43b41d23d4 100644
--- a/package.json
+++ b/package.json
@@ -169,6 +169,7 @@
 		"compat/dist",
 		"compat/src",
 		"compat/server.js",
+		"compat/test-utils.js",
 		"compat/jsx-runtime.js",
 		"compat/jsx-runtime.mjs",
 		"compat/jsx-dev-runtime.js",