fix

src/ygom.ts

@@ -20,7 +20,7 @@ class BitWriter {
       const remain = 8 - this.bitPos;
       const take = Math.min(remain, length);
       const shift = length - take;
-      this.current |= ((value >> shift) & ((1 << take) - 1)) << (remain - take);
+      this.current |= ((value >>> shift) & ((1 << take) - 1)) << (remain - take);
       this.bitPos += take;
       length -= take;
 
@@ -50,7 +50,7 @@ class BitReader {
     while (length > 0) {
       const remain = 8 - this.bitPos;
       const take = Math.min(remain, length);
-      const bits = (this.bytes[this.index] >> (remain - take)) & ((1 << take) - 1);
+      const bits = (this.bytes[this.index] >>> (remain - take)) & ((1 << take) - 1);
       result = (result << take) | bits;
       this.bitPos += take;
       length -= take;