3 files changed, 28 insertions, 0 deletions
diff --git a/client/src/lib/utils/addProtocol.ts b/client/src/lib/utils/addProtocol.ts
new file mode 100644
index 0000000..75c6214
--- /dev/null
+++ b/client/src/lib/utils/addProtocol.ts
@@ -0,0 +1,6 @@
+export default function (url: string) {
+    if (!/^https?:\/\//.test(url)) {
+        url = "https://" + url;
+    }
+    return url;
+}
diff --git a/client/src/lib/utils/checkUrl.ts b/client/src/lib/utils/checkUrl.ts
new file mode 100644
index 0000000..8ed747f
--- /dev/null
+++ b/client/src/lib/utils/checkUrl.ts
@@ -0,0 +1,10 @@
+import addProtocol from "./addProtocol";
+
+export default function (url: string): string | null {
+    try {
+        const normalizedUrl = new URL(addProtocol(url));
+        return normalizedUrl.toString();
+    } catch (e) {
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/client/src/lib/utils/debounce.ts b/client/src/lib/utils/debounce.ts
new file mode 100644
index 0000000..86ef3db
--- /dev/null
+++ b/client/src/lib/utils/debounce.ts
@@ -0,0 +1,12 @@
+type Procedure = (...args: any[]) => any;
+
+export default function <F extends Procedure>(f: F, duration: number) {
+    let timeout: ReturnType<typeof setTimeout> | null = null;
+    return function (...args: Parameters<F>) {
+        if (timeout !== null) {
+            clearTimeout(timeout);
+            timeout = null;
+        }
+        timeout = setTimeout(() => f(...args), duration);
+    };
+}