commit-and-tag-version/test/mocks/updater/customer-updater.js

replacement for `npm version` with automatic CHANGELOG generation

const REPLACER = /version: "(.*)"/;

module.exports.readVersion = function (contents) {
  return REPLACER.exec(contents)[1];
};

module.exports.writeVersion = function (contents, version) {
  return contents.replace(REPLACER.exec(contents)[0], `version: "${version}"`);
};