1 files changed, 59 insertions, 0 deletions
diff --git a/scripts/frontend/preinstall.mjs b/scripts/frontend/preinstall.mjs
new file mode 100644
index 00000000000..09d980344ea
--- /dev/null
+++ b/scripts/frontend/preinstall.mjs
@@ -0,0 +1,59 @@
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { readFile, rm } from 'node:fs/promises';
+
+const ROOT_PATH = join(dirname(fileURLToPath(import.meta.url)), '..', '..');
+const NODE_MODULES = join(ROOT_PATH, 'node_modules');
+const INTEGRITY_FILE = join(NODE_MODULES, '.yarn-integrity');
+const PACKAGE_JSON = join(ROOT_PATH, 'package.json');
+
+function isAliasedDependency(x) {
+  return x.includes('@npm:');
+}
+function serializeAliasedDependencyPatterns(obj) {
+  return Object.entries(obj).map(([key, version]) => `${key}@${version}`);
+}
+
+async function readJSON(file) {
+  return JSON.parse(await readFile(file, { encoding: 'utf-8' }));
+}
+
+async function getPrevTopLevelPatterns() {
+  try {
+    return (await readJSON(INTEGRITY_FILE))?.topLevelPatterns?.filter(isAliasedDependency);
+  } catch {
+    return [];
+  }
+}
+async function getCurrentTopLevelPatterns() {
+  try {
+    const { dependencies, devDependencies } = await readJSON(PACKAGE_JSON);
+
+    return serializeAliasedDependencyPatterns(dependencies)
+      .concat(serializeAliasedDependencyPatterns(devDependencies))
+      .filter(isAliasedDependency);
+  } catch {
+    return [];
+  }
+}
+
+function arraysHaveSameItems(a1, a2) {
+  return JSON.stringify(a1.sort()) === JSON.stringify(a2.sort());
+}
+
+const [prevTopLevelPatterns, currentTopLevelPatterns] = await Promise.all([
+  getPrevTopLevelPatterns(),
+  getCurrentTopLevelPatterns(),
+]);
+
+/**
+ * Yarn seems to have problems at times, if one uses an <alias>@npm:<name>
+ *  and those packages are being updated. In case one switches branches the
+ *  node_modules folder seems to end up being a corrupted somehow
+ */
+if (!arraysHaveSameItems(prevTopLevelPatterns, currentTopLevelPatterns)) {
+  console.error(
+    '[WARNING] package.json changed significantly. Removing node_modules to be sure there are no problems.',
+  );
+  await rm(NODE_MODULES, { recursive: true, force: true });
+}