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node_modules/eslint-plugin-node/lib/util/get-allow-modules.js 1.58 KB
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  /**
   * @author Toru Nagashima
   * @copyright 2016 Toru Nagashima. All rights reserved.
   * See LICENSE file in root directory for full license.
   */
  "use strict"
  
  //------------------------------------------------------------------------------
  // Helpers
  //------------------------------------------------------------------------------
  
  const DEFAULT_VALUE = Object.freeze([])
  
  /**
   * Gets `allowModules` property from a given option object.
   *
   * @param {object|undefined} option - An option object to get.
   * @returns {string[]|null} The `allowModules` value, or `null`.
   */
  function get(option) {
      if (option && option.allowModules && Array.isArray(option.allowModules)) {
          return option.allowModules.map(String)
      }
      return null
  }
  
  //------------------------------------------------------------------------------
  // Public Interface
  //------------------------------------------------------------------------------
  
  /**
   * Gets "allowModules" setting.
   *
   * 1. This checks `options` property, then returns it if exists.
   * 2. This checks `settings.node` property, then returns it if exists.
   * 3. This returns `[]`.
   *
   * @param {RuleContext} context - The rule context.
   * @returns {string[]} A list of extensions.
   */
  module.exports = function getAllowModules(context) {
      return (
          get(context.options && context.options[0]) ||
          get(context.settings && context.settings.node) ||
          DEFAULT_VALUE
      )
  }
  
  module.exports.schema = {
      type: "array",
      items: {
          type: "string",
          pattern: "^(?:@[a-zA-Z0-9_\\-.]+/)?[a-zA-Z0-9_\\-.]+$",
      },
      uniqueItems: true,
  }