preparing for bringing this all together

src/compress.zig

@@ -1,9 +1,8 @@
 //
 // varint64 []const u8 variants
 //
-// Thanks to https://github.com/gsquire/zig-snappy/blob/master/snappy.zig and golang's
-// varint implementation.
-
+// Thanks to https://github.com/gsquire/zig-snappy/blob/master/snappy.zig and
+// golang's varint implementation.
 const std = @import("std");
 
 // compresses a strictly incrementing sorted slice of integers using delta
@@ -96,7 +95,7 @@ pub const Varint = struct {
     bytesRead: usize,
 };
 
-const maxVarintLen64 = 10;
+pub const maxVarintLen64 = 10;
 
 // https://golang.org/pkg/encoding/binary/#Uvarint
 pub fn uvarint(buf: []const u8) error{Overflow}!Varint {