[web3.js] Replace tweetnacl impl

[steveluscher]

Problem

This PR aims to replace the ed25519 keygen, signing, and verifying algorithms with smaller ones having fewer dependencies.

Summary of Changes

• Replaced tweetnacl with @noble/ed25519

Bundle size

Used package-build-stats to analyze the size change locally.

const {getPackageStats} = require('package-build-stats');
getPackageStats('~/web3.js').then(s => console.log(s));

Before	After
https://gist.github.com/steveluscher/3cc75a21d94be656071a5983acd4fae9	https://gist.github.com/steveluscher/a8722c7ad7726d897b625e971492a086

tl;dr a ~4% reduction in bundle size after gzip.

Dependency tree

Replaced tweetnacl for @noble/ed25519, dropping about 4K gzipped.

Before	After

Produced using https://npmgraph.js.org/

Performance

Consider this keypair generation code:

// perf.js
const {Keypair} = require('@solana/web3.js/lib/index.cjs');

for (let ii = 0; ii < 10000; ii++) {
  Keypair.generate();
}

Take 10 trials:

 % time node perf.js

Results

No change.

---

Consider this transaction signing code:

const {
  Keypair,
  PublicKey,
  Transaction,
  TransactionInstruction,
} = require('@solana/web3.js/lib/index.cjs');

const keypair = Keypair.generate();
const tx = new Transaction({
  feePayer: keypair.publicKey,
  recentBlockhash: '3CYc7JXH2iEgiyiSFakXMuBJ43ss8ciJzErUfD7jBCuk',
}).add(
  new TransactionInstruction({
    data: Buffer.from('hello world'),
    keys: [],
    programId: new PublicKey('MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr'),
  }),
);

for (let ii = 0; ii < 1000; ii++) {
  tx.sign(keypair);
}

Take 10 trials:

 % time node perf.js

Results:

~6% slower.

Compatibility notes

Together, this, #27390, and #27127 make @solana/web3.js incompatible with React Native because of their use of:

• BigInt
• Exponentiation with BigInt
• bigint literals

Because this team is small, we're likely to recommend that folks upgrade their React Native apps to 0.70 and convert them to run using the Hermes JavaScript engine, which in that version supports all of the above. Support for big integers is critical to most crypto apps, and React Native has now made Hermes the default engine. We would be best advised to skate where the puck is going.

Addresses solana-labs/solana-web3.js#1103
Fixes #26933.

[codecov]

Codecov Report

Merging #27435 (81a016d) into master (e779032) will decrease coverage by 0.2%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   solana-labs/solana#27435     +/-   ##
=========================================
- Coverage    76.9%    76.6%   -0.3%     
=========================================
  Files          48       52      +4     
  Lines        2505     2648    +143     
  Branches      355      363      +8     
=========================================
+ Hits         1927     2030    +103     
- Misses        448      484     +36     
- Partials      130      134      +4     

[paulmillr]

@steveluscher it seems like the performance bottleneck is somewhere outside of ed25519, since tweetnacl should be 4x slower.