renovate/lib/config/massage.js

const is = require('@sindresorhus/is');
const options = require('./definitions').getOptions();

const clone = input => JSON.parse(JSON.stringify(input));

let allowedStrings;

module.exports = {
  massageConfig,
};

// Returns a massaged config
function massageConfig(config) {
  if (!allowedStrings) {
    allowedStrings = [];
    options.forEach(option => {
      if (option.allowString) {
        allowedStrings.push(option.name);
      }
    });
  }
  const massagedConfig = clone(config);
  for (const [key, val] of Object.entries(config)) {
    if (allowedStrings.includes(key) && is.string(val)) {
      massagedConfig[key] = [val];
    } else if (key === 'npmToken' && val && val.length < 50) {
      massagedConfig.npmrc = `//registry.npmjs.org/:_authToken=${val}\n`;
      delete massagedConfig.npmToken;
    } else if (is.array(val)) {
      massagedConfig[key] = [];
      val.forEach(item => {
        if (is.object(item)) {
          massagedConfig[key].push(massageConfig(item));
        } else {
          massagedConfig[key].push(item);
        }
      });
    } else if (is.object(val) && key !== 'encrypted') {
      massagedConfig[key] = massageConfig(val);
    }
  }
  if (is.nonEmptyArray(massagedConfig.packageRules)) {
    const newRules = [];
    const updateTypes = [
      'major',
      'minor',
      'patch',
      'pin',
      'digest',
      'lockFileMaintenance',
      'rollback',
    ];
    for (const rule of massagedConfig.packageRules) {
      newRules.push(rule);
      for (const [key, val] of Object.entries(rule)) {
        if (updateTypes.includes(key)) {
          const newRule = clone(rule);
          newRule.updateTypes = rule.updateTypes || [];
          newRule.updateTypes.push(key);
          Object.assign(newRule, val);
          newRules.push(newRule);
        }
      }
    }
    for (const rule of newRules) {
      updateTypes.forEach(updateType => {
        delete rule[updateType];
      });
    }
    massagedConfig.packageRules = newRules;
  }
  return massagedConfig;
}