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fast-abi

Encodes and decodes abi data, fast.

Usage

const RUST_ENCODER = new FastABI(ABI as MethodAbi[]);
const callData = RUST_ENCODER.encodeInput('sampleSellsFromUniswapV2', [...values]);
// 0x.....

// Decode the output of a method call
const output = RUST_ENCODER.decodeOutput('sampleSellsFromUniswapV2', callData);
// {
//   router: '0x6b175474e89094c44da98b954eedeac495271d0f',
//   path: [ '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee' ],
//   takerTokenAmounts: [ 1, 2, 3 ]
// }

Perf

    Uniswap ABI
      13 input encode
        ✓ ZeroEx - optimized (2579ms)
        p25: 0.223583ms, p50: 0.22825ms, p99: 1.734083ms, p100: 5.321458ms
        ✓ ZeroEx - no optimize (893ms)
        p25: 0.077166ms, p50: 0.077792ms, p99: 0.098417ms, p100: 2.595542ms
        ✓ fast-abi (335ms)
        p25: 0.027958ms, p50: 0.028292ms, p99: 0.032583ms, p100: 2.886333ms

      13 input decode
        ✓ ZeroEx (1399ms)
        p25: 0.112125ms, p50: 0.113542ms, p99: 0.219583ms, p100: 63.167208ms
        ✓ fast-abi (392ms)
        p25: 0.02975ms, p50: 0.030708ms, p99: 0.046667ms, p100: 4.391958ms

      13 output decode
        ✓ ZeroEx (1138ms)
        p25: 0.100583ms, p50: 0.101458ms, p99: 0.126875ms, p100: 4.380667ms
        ✓ fast-abi (327ms)
        p25: 0.023709ms, p50: 0.024625ms, p99: 0.049875ms, p100: 8.044291ms

      130 input encode
        ✓ ZeroEx - optimized (15317ms)
        p25: 1.374375ms, p50: 1.398958ms, p99: 3.235333ms, p100: 9.725875ms
        ✓ ZeroEx - no optimize (6272ms)
        p25: 0.552209ms, p50: 0.560416ms, p99: 1.711958ms, p100: 3.264542ms
        ✓ fast-abi (1569ms)
        p25: 0.140291ms, p50: 0.142292ms, p99: 0.1875ms, p100: 10.919333ms

      130 input decode
        ✓ ZeroEx (10277ms)
        p25: 0.8775ms, p50: 0.891917ms, p99: 3.149708ms, p100: 211.279542ms
        ✓ fast-abi (2381ms)
        p25: 0.189791ms, p50: 0.192541ms, p99: 0.367417ms, p100: 10.084375ms

      130 output decode
        ✓ ZeroEx (9743ms)
        p25: 0.872875ms, p50: 0.886042ms, p99: 3.282917ms, p100: 6.403833ms
        ✓ fast-abi (2244ms)
        p25: 0.177959ms, p50: 0.183959ms, p99: 0.230166ms, p100: 6.963125ms

How to Publish

npm

yarn publish --access public

Rust Binary

NOTE: make sure package.json with a new npm package version is merged.

Push an empty commit with message [publish binary]. This will trigger a GitHub action step publish which will publish the Rust binaries to a new GitHub draft release.

In GitHub, update the release notes and publish the release.

arm64 Binaries

GitHub does not provide an arm64 environment with which to build binaries. However, binaries can be built locally (on an Mx Mac, typically):

yarn build
yarn node-pre-gyp package

This will output the binary to build/stage/<package version>. It may then be manually added to the GitHub release.