sed -i 's/ var / const /', with const->let fixes

src/script_number.js

@@ -4,7 +4,7 @@ function decode (buffer, maxLength, minimal) {
   maxLength = maxLength || 4
   minimal = minimal === undefined ? true : minimal
 
-  var length = buffer.length
+  const length = buffer.length
   if (length === 0) return 0
   if (length > maxLength) throw new TypeError('Script number overflow')
   if (minimal) {
@@ -15,16 +15,15 @@ function decode (buffer, maxLength, minimal) {
 
   // 40-bit
   if (length === 5) {
-    var a = buffer.readUInt32LE(0)
-    var b = buffer.readUInt8(4)
+    const a = buffer.readUInt32LE(0)
+    const b = buffer.readUInt8(4)
 
     if (b & 0x80) return -(((b & ~0x80) * 0x100000000) + a)
     return (b * 0x100000000) + a
   }
 
-  var result = 0
-
   // 32-bit / 24-bit / 16-bit / 8-bit
+  let result = 0
   for (var i = 0; i < length; ++i) {
     result |= buffer[i] << (8 * i)
   }
@@ -43,10 +42,10 @@ function scriptNumSize (i) {
 }
 
 function encode (number) {
-  var value = Math.abs(number)
-  var size = scriptNumSize(value)
-  var buffer = Buffer.allocUnsafe(size)
-  var negative = number < 0
+  let value = Math.abs(number)
+  const size = scriptNumSize(value)
+  const buffer = Buffer.allocUnsafe(size)
+  const negative = number < 0
 
   for (var i = 0; i < size; ++i) {
     buffer.writeUInt8(value & 0xff, i)