get-next-version.js

const packageJson = require("./package.json");
const conventionalRecommendedBump = require("conventional-recommended-bump");
const semver = require("semver");

const getNextVersion = (currentVersion) => {
  return new Promise((resolve, reject) => {
    conventionalRecommendedBump(
      {
        preset: "angular",
      },
      (err, release) => {
        if (err) {
          reject(err);
          return;
        }

        const nextVersion =
          semver.valid(release.releaseType) ||
          semver.inc(currentVersion, release.releaseType);

        resolve(nextVersion);
      }
    );
  });
};

getNextVersion(packageJson.version)
  .then((version) => console.log(version))
  .catch((error) => console.log(error));