alecxe/eslint-plugin-protractor

'use strict'

/**
 * @fileoverview Don't allow to shadow the built-in Protractor globals
 * @author Alexander Afanasyev
 */

module.exports = {
  meta: {
    schema: []
  },

  create: function (context) {
    var protractorGlobals = [
      'browser',
      'protractor',
      'element',
      'by',
      '$',
      '$$'
    ]

    function checkVariables (node) {
      var variables = context.getDeclaredVariables(node)
      for (var i = 0; i < variables.length; ++i) {
        if (protractorGlobals.indexOf(variables[i].name) !== -1) {
          context.report({
            node: node,
            message: 'Unexpected Protractor built-in global variable shadowing'
          })
        }
      }
    }

    return {
      'VariableDeclaration': checkVariables,
      'FunctionDeclaration': checkVariables,
      'FunctionExpression': checkVariables,
      'CatchClause': checkVariables
    }
  }
}