refactor: common to ts

src/common/libs/hexToBinary.ts

@@ -0,0 +1,34 @@
+const lookup = {
+   0: '0000',
+   1: '0001',
+   2: '0010',
+   3: '0011',
+   4: '0100',
+   5: '0101',
+   6: '0110',
+   7: '0111',
+   8: '1000',
+   9: '1001',
+   a: '1010',
+   b: '1011',
+   c: '1100',
+   d: '1101',
+   e: '1110',
+   f: '1111',
+   A: '1010',
+   B: '1011',
+   C: '1100',
+   D: '1101',
+   E: '1110',
+   F: '1111'
+} as const;
+
+type HexChar = keyof typeof lookup
+
+export default function hexToBinary (hex: HexChar[]) {
+   let binary = '';
+   for (let i = 0; i < hex.length; i++)
+      binary += lookup[hex[i]];
+
+   return binary;
+}