resolve-config.js

'use strict';
const exists = require('path-exists');
const path = require('path');
const error = require('./utils').error;
const readJsonAsync = require('./utils').readJsonAsync;
const wrapAsync = require('./utils').wrapAsync;
const {
  findPatternLabConfig,
} = require('@pattern-lab/core/src/lib/utils/find-config-file');

/**
 * @func resolveConfig
 * @desc Resolves the given Pattern Lab config file.
 * @param {string} [configPath=./patternlab-config.json] - Path to the patternlab-config.json. Defaults to project dir.
 * @return {object|boolean} Returns the config object or false otherwise.
 */
function resolveConfig(configPath) {
  return wrapAsync(function*() {
    if (typeof configPath !== 'string') {
      error(
        'resolveConfig: If configPath is set, it is expected to be of type string.'
      );
      return false;
    }
    if (!exists.sync(configPath)) {
      error(`resolveConfig: configPath ${configPath} does not exists`);
      return false;
    }

    /**
     * Setup the config.
     * 1. Check if user specified custom Pattern Lab config location
     * 2. Read the config file
     */
    try {
      if (configPath) {
        const absoluteConfigPath = path.resolve(configPath); // 1
        return yield findPatternLabConfig(absoluteConfigPath);
      } else {
        return yield findPatternLabConfig();
      }
    } catch (err) {
      error(
        'resolveConfig: Got an error during parsing your Pattern Lab config. Please make sure your config file exists.'
      );
      error(err);
      return false;
    }
  });
}

module.exports = resolveConfig;