From f19fc78a151c761642cf7c9b654e0da9db3c4418 Mon Sep 17 00:00:00 2001
From: Joe Carstairs <65492573+Sycamost@users.noreply.github.com>
Date: Sun, 13 Aug 2023 20:33:03 +0100
Subject: More robust relative path handling

---
 src/lib/relativePath.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 src/lib/relativePath.ts

(limited to 'src/lib')

diff --git a/src/lib/relativePath.ts b/src/lib/relativePath.ts
new file mode 100644
index 0000000..ad8582c
--- /dev/null
+++ b/src/lib/relativePath.ts
@@ -0,0 +1,12 @@
+export default function (currentPath: string, relativePath: string) {
+  if (relativePath.length > 2 && relativePath.slice(0, 3) === '../') {
+    throw new Error('Cannot calculate relative path because it goes up a directory.');
+  }
+
+  if (currentPath.at(-1) !== '/') {
+    currentPath = currentPath + '/';
+  }
+  relativePath = relativePath.replace(/^\.?\//, '');
+
+  return currentPath + relativePath;
+}
-- 
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