@applitools/eyes-storybook/src/utils/determineStorybookVersion.js

const {resolve} = require('path');
const {execSync} = require('child_process');
const fs = require('fs');
const findNpmModuleCommandPath = require('../findNpmModuleCommandPath');

async function determineStorybookVersion({packagePath, isWindows}) {
  let sbArg, storybookPath;

  const commandV6 = 'start-storybook' + (isWindows ? '.cmd' : '');
  const commandV7 = 'sb' + (isWindows ? '.cmd' : '');
  const storybookPathV6 = resolve(packagePath, 'node_modules/.bin', commandV6);
  const storybookPathV7 = resolve(packagePath, 'node_modules/.bin', commandV7);

  // first we look for the binaries in the local node_modules/.bin folder in case there are multiple versions of storybook installed
  if (fs.existsSync(storybookPathV6)) {
    storybookPath = storybookPathV6;
  } else if (fs.existsSync(storybookPathV7)) {
    storybookPath = storybookPathV7;
    sbArg = 'dev';
  } else {
    // the binary is not in the local node_modules/.bin folder, so we need to find it
    storybookPath = await findNpmModuleCommandPath(commandV6, packagePath);
    if (!storybookPath) {
      storybookPath = await findNpmModuleCommandPath(commandV7, packagePath);
      sbArg = 'dev';
    }
  }

  const sbVersion = execSync(`"${storybookPath}" ${sbArg ?? ''} --version`).toString();
  return {storybookPath, sbVersion, sbArg};
}
module.exports = determineStorybookVersion;