check a package version is whether a `beta` one

get-dist-tag.js

const cp = require('child_process');

const pkg = require('../package.json');

const BETA_NAMES = ['alpha', 'beta'];

const { version } = pkg;

// the alpha version No. should be like "v7.1.0-alpha.2", "v8.0.0"
const alphaReg = /(?:\d+\.\d+\.\d+)(-([a-zA-Z]+)\.\d+)?/i;
const versionMatch = version.match(alphaReg);
const alpha = versionMatch[2];
const isBeta = BETA_NAMES.includes(alpha);

console.dir({ version, versionMatch, alpha, isBeta }, { colors: true });

const publishArgs = isBeta ? [
  '--tag',
  'beta',
] : [];

const publishProcess = cp.spawn('npm publish --verbose', [
  ...publishArgs,
], { shell: true, stdio: ['inherit', 'inherit', 'inherit'] });

publishProcess.on('exit', (code) => {
  if (code !== 0) {
    process.exit(1);
  }
});