generate-examples-index-webpack-plugin/src/utils/getPackageJson.js

Generate an examples index page from your examples folder

const fs = require('fs');
const path = require('path');

function findPackageJson() {
  // try with ${cwd}/package.json
  let route = path.join(process.cwd(), 'package.json');
  if (fs.existsSync(route)) {
    return route;
  }

  // try to find a package.json in the parent directories
  route = path.normalize(path.join(__dirname, '..', '..', '..', '..')); // starts outside this project folder
  while (route) {
    const tryRoute = path.join(route, 'package.json');
    if (fs.existsSync(tryRoute)) {
      return tryRoute;
    }
    route = path.normalize(path.join(__dirname, '..'));
  }

  return undefined;
}

/**
 * Return the package.json as an object
 *
 * @param {string|object} route the path of the package.json to read
 *                             if it's an object, it will be returned directly (already read)
 *                             if undefined, will try to find it. Returns undefined if not found
 */
function getPackageJson(route) {
  // return the already provided object
  if (typeof route === 'object') {
    return route;
  }
  // try to find the path
  if (!route) {
    route = findPackageJson();
    if (!route) {
      return undefined;
    }
  }
  // load the path
  try {
    const code = fs.readFileSync(route).toString();
    return JSON.parse(code);
  } catch (error) {
    return undefined;
  }
}

module.exports = getPackageJson;