From 8612acfca182e1941caf0acd1a07e48ad538d2e7 Mon Sep 17 00:00:00 2001
From: Misaki Kasumi <misakikasumi@outlook.com>
Date: Tue, 2 Jan 2024 14:51:47 +0800
Subject: [PATCH] polish

---
 src/polyfill.ts | 52 +++++++++++++++++++++++++++++--------------------
 src/watchers.ts |  2 +-
 2 files changed, 32 insertions(+), 22 deletions(-)

diff --git a/src/polyfill.ts b/src/polyfill.ts
index 729c27f..910e668 100644
--- a/src/polyfill.ts
+++ b/src/polyfill.ts
@@ -1,28 +1,38 @@
 export function toBase64(array: Uint8Array | Uint8ClampedArray): string {
-    let base64 = "";
+    const base64: string[] = [];
     const characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
     const padding = array.length % 3;
-
-    for (let i = 0; i < array.length - padding; i += 3) {
+    let i = 0;
+    for (; i < array.length - padding; i += 3) {
         const combined = (array[i] << 16) | (array[i + 1] << 8) | array[i + 2];
-        base64 +=
-            characters[(combined >> 18) & 63] +
-            characters[(combined >> 12) & 63] +
-            characters[(combined >> 6) & 63] +
-            characters[combined & 63];
+        base64.push(
+            characters[(combined >>> 18) & 63],
+            characters[(combined >>> 12) & 63],
+            characters[(combined >>> 6) & 63],
+            characters[combined & 63],
+        );
     }
-
-    if (padding === 2) {
-        const combined = (array[array.length - 2] << 8) | array[array.length - 1];
-        base64 +=
-            characters[(combined >> 10) & 63] +
-            characters[(combined >> 4) & 63] +
-            characters[(combined << 2) & 63] +
-            "=";
-    } else if (padding === 1) {
-        const combined = array[array.length - 1];
-        base64 += characters[(combined >> 2) & 63] + characters[(combined << 4) & 63] + "==";
+    switch (padding) {
+        case 2: {
+            const combined = (array[i] << 8) | array[i + 1];
+            base64.push(
+                characters[(combined >>> 10) & 63],
+                characters[(combined >>> 4) & 63],
+                characters[(combined << 2) & 63],
+                "=",
+            );
+            break;
+        }
+        case 1: {
+            const combined = array[i];
+            base64.push(
+                characters[(combined >>> 2) & 63],
+                characters[(combined << 4) & 63],
+                "=",
+                "=",
+            );
+            break;
+        }
     }
-
-    return base64;
+    return base64.join("");
 }
diff --git a/src/watchers.ts b/src/watchers.ts
index 8cf9b72..af35a2d 100644
--- a/src/watchers.ts
+++ b/src/watchers.ts
@@ -46,7 +46,7 @@ function watchInner(
     return watch(
         source,
         (newV, oldV, onCleanup) => {
-            if (oldValue === voidSymbol) {
+            if (oldValue == voidSymbol) {
                 oldValue = oldV;
             }
             return debounced(newV, onCleanup);