wasm-metering/test/buildTests.js

injects metering into webassembly binaries

const fs = require('fs')
const cp = require('child_process')
const path = require('path')
const wasm2json = require('wasm-json-toolkit/wasm2json')

function processFiles (path, out) {
  const binPath = `${__dirname}/wabt/out/wast2wasm`
  const files = fs.readdirSync(path)

  for (let file of files) {
    console.log(file)
    if (file.split('.')[1] === 'wast') {
      // compile to wasm
      const str = `${binPath} ${path}/${file} -o /tmp/temp.wasm`
      cp.execSync(str)
      const wasm = fs.readFileSync('/tmp/temp.wasm')
      // compile to json
      const json = wasm2json(wasm)
      fs.writeFileSync(`${out}/${file}.json`, JSON.stringify(json, null, 2))
    }
  }
}

processFiles(path.join(__dirname, './in/wast'), path.join(__dirname, './in/json'))
processFiles(path.join(__dirname, './expected-out/wast'), path.join(__dirname, './expected-out/json'))