Adding typescript support and unit tests

1 files changed, 20 insertions, 0 deletions

diff --git a/webAO/utils/tryUrls.ts b/webAO/utils/tryUrls.ts
new file mode 100644
index 0000000..14ef885
--- /dev/null
+++ b/webAO/utils/tryUrls.ts
@@ -0,0 +1,20 @@
+import fileExists from './fileExists'
+import transparentPng from '../constants/transparentPng'
+const urlExtensionsToTry = [
+    '.png',
+    '.gif',
+    '.webp',
+    '.apng'
+]
+const tryUrls = async (url: string) => {
+    for (let i = 0; i < urlExtensionsToTry.length; i++) {
+        const extension = urlExtensionsToTry[i]
+        const fullFileUrl = url + extension
+        const exists = await fileExists(fullFileUrl);
+        if (exists) {
+            return fullFileUrl
+        }
+    }
+    return transparentPng
+}
+export default tryUrls
\ No newline at end of file