Improve performance of a few types

[timotejroiko]

Hey,

I ended up focusing on some improvements for the less important data types and flags. Additionally i added some more tests and updated dependencies because why not.

Anyways feel free to take a look, test and pick what you like. If you don't like some specific change let me know and i'll revert

Cheers!

---

package.json

Update dependencies

test.js

Added tests for:

• Empty String
• BigInt > 64 bit
• NaN
• Infinity
• Undefined
• Function

test-bench2.js

Added benchmarks for measuring performance of different data types

main.js

Changes:

• separate and clarify flag-only data types
• added flags for: true, false, big bigint, nan, infinity, undefined, function
• changed Buffer.alloc to Buffer.allocUnsafe (faster)
• added support for big bigint (>64bit, stored as hex buffer)
• serialize functions and retrieve actual functions instead of string representation (breaking change)
• store undefined as flag and retrieve actual undefined instead of "undefined" (breaking change)

hash.cc

Added short-circuiting for flag-only types

Performance changes:

• Numbers -> 50% faster writes
• Booleans -> 100% faster writes and 200% faster reads
• Bigint -> 50% faster writes
• Big Bigint -> no longer throws, performance is a bit slower than strings
• Null -> 50% faster writes, 200% faster reads
• NaN -> 100% faster writes, 200% faster reads
• Infinity -> 100% faster writes, 200% faster reads
• Undefined -> 50% faster writes, 200% faster reads
• Function -> now returns an actual function, performance is a bit slower than objects

[jhuckaby]

Hey @timotejroiko, thanks so much for this! I'll take a look as soon as I have some time.

[jhuckaby]

Hey @timotejroiko,

So I have to apologize. I had a bunch of MegaHash changes in my local repo from many months ago that I didn't finish, and kind of forgot about. I really wanted to get those committed, pushed and tagged before I worked on your fork.

Part of these changes was cleaning up the repo folders a bit, and I moved the test scripts into a new test/ subdirectory, and completely redesigned the benchmarking script.

Would it be possible for you to move your test script into there as well? Also, can we rename it from test-bench2.js to something like test-types.js?

I think most of your other changes are "mergeable", and won't conflict with what I changed.

Thanks, and sorry!

[timotejroiko]

no worries :) im working on some other stuff but i'll get back on it soon.

[timotejroiko]

i've rebased and moved the file to the test folder, let me know if theres anything else i can do :)

[mfcodeworks]

Any update on these @jhuckaby? These PRs look pretty great in what they can provide for the repo