code: function (inputNode, options = {}) {
    this.formatter = require('eslint/lib/formatters/stylish')
    if (!(this instanceof StandardValidationFilter)) {
      return new StandardValidationFilter(inputNode, options)
    }
    // set inputTree
    Filter.call(this, inputNode)
    this.node = inputNode
    this.console = options.console || console
    this.internalOptions = {
      format: options.format ? options.format : undefined,
      throwOnError: options.throwOnError ? options.throwOnError : false,
      logOutput: options.logOutput ? options.logOutput : false,
      fix: options.fix ? options.fix : false,
      globals: options.globals || options.global
    }
    this.ignore = options.ignore ? options.ignore : function () {
      return false
    }
    if (typeof options.testGenerator === 'string') {
      const testGenerators = require('./test-generators')
  
      this.testGenerator = testGenerators[options.testGenerator]
      if (!this.testGenerator) {
        throw new Error(`Could not find '${this.internalOptions.testGenerator}' test generator.`)
      }
    } else {
      this.testGenerator = options.testGenerator
    }
    if (this.testGenerator) {
      this.targetExtension = 'lint-test.js'
    }
  
    // set formatter
    this.formatter = require(this.internalOptions.format ? this.internalOptions.format : 'eslint/lib/formatters/stylish')
  }
docs: Uses the content of each file in a given tree and runs eslint validation on it.
  @param {Object} inputNode from broccoli.makeNode
  @param {{format: String}} options Filter options
  @returns {StandardValidationFilter} Filter object
  @constructor