fast-diff sqlite3.c amalgamation

diff.js

#!/usr/bin/env node

const fs = require('fs/promises')
const diff = require('fast-diff')

async function main() {
  const startAll = process.hrtime.bigint()
  const startRead = process.hrtime.bigint()
 
  // Download from https://www.sqlite.org/2021/sqlite-autoconf-3340100.tar.gz
  const fileA = await fs.readFile('sqlite3-a.c', {encoding: 'utf8'})
  const fileB = await fs.readFile('sqlite3-b.c', {encoding: 'utf8'})
  const endRead = process.hrtime.bigint()
  console.log(`Read took ${(endRead - startRead)/BigInt(1e6)} milliseconds`)

  const startDiff = process.hrtime.bigint()
  console.log(diff(fileA, fileB)[1])
  const endDiff = process.hrtime.bigint()
  console.log(`Diff took ${(endDiff - startDiff)/BigInt(1e6)} milliseconds`)

  const endAll = process.hrtime.bigint()
  console.log(`Benchmark took ${(endAll - startAll)/BigInt(1e6)} milliseconds`)
}

main()