1 files changed, 44 insertions, 0 deletions

diff --git a/packages/turbo-utils/src/searchUp.ts b/packages/turbo-utils/src/searchUp.ts
new file mode 100644
index 0000000..57f92e4
--- /dev/null
+++ b/packages/turbo-utils/src/searchUp.ts
@@ -0,0 +1,44 @@
+import fs from "fs";
+import path from "path";
+
+function searchUp({
+  target,
+  cwd,
+  contentCheck,
+}: {
+  target: string;
+  cwd: string;
+  contentCheck?: (content: string) => boolean;
+}): string | null {
+  const root = path.parse(cwd).root;
+
+  let found = false;
+  while (!found && cwd !== root) {
+    if (contentCheck) {
+      try {
+        const content = fs.readFileSync(path.join(cwd, target)).toString();
+        if (contentCheck(content)) {
+          found = true;
+          break;
+        }
+      } catch {
+        // keep looking
+      }
+    } else {
+      if (fs.existsSync(path.join(cwd, target))) {
+        found = true;
+        break;
+      }
+    }
+
+    cwd = path.dirname(cwd);
+  }
+
+  if (found) {
+    return cwd;
+  }
+
+  return null;
+}
+
+export default searchUp;