Fix lint errors

src/index.js

@@ -17,12 +17,12 @@ const binaryToBytes = binaryString => Buffer.from(
 		.map(binary => parseInt(binary, 2))
 );
 
-const randomNumberBetween = (min, max) => Math.floor(parseInt(randomBytes(1).toString('hex'), 16) / 256 * (max - min + 1) + min);
+const randomNumberBetween = (min, max) => Math.floor((parseInt(randomBytes(1).toString('hex'), 16) / 256 * (max - min + 1)) + min);
 
-const dogeSeed = (bits) => {
+const dogeSeed = bits => {
 	bits = bits || 128;
 	if (bits <= 0 || bits % 8 !== 0) {
-    throw TypeError('bits must be divisible by 8');
+		throw new TypeError('bits must be divisible by 8');
 	}
 
 	const entropy = randomBytes(bits / 8);