openzeppelin-contracts/scripts/release/synchronize-versions.js

#!/usr/bin/env node

// Synchronizes the version in contracts/package.json with the one in package.json.
// This is run automatically when npm version is run.

const fs = require('fs');
const cp = require('child_process');

setVersion('contracts/package.json');

function setVersion (file) {
  const json = JSON.parse(fs.readFileSync(file));
  json.version = process.env.npm_package_version;
  fs.writeFileSync(file, JSON.stringify(json, null, 2) + '\n');
  cp.execFileSync('git', ['add', file]);
}