config.js

module.exports = {

  /**
   * The prefix to look for when parsing directives.
   *
   * @type {String}
   */

  prefix: 'v-',

  /**
   * Whether to print debug messages.
   * Also enables stack trace for warnings.
   *
   * @type {Boolean}
   */

  debug: false,

  /**
   * Whether to suppress warnings.
   *
   * @type {Boolean}
   */

  silent: false,

  /**
   * Whether allow observer to alter data objects'
   * __proto__.
   *
   * @type {Boolean}
   */

  proto: true,

  /**
   * Whether to parse mustache tags in templates.
   *
   * @type {Boolean}
   */

  interpolate: true,

  /**
   * Whether to use async rendering.
   */

  async: true,

  /**
   * Whether to warn against errors caught when evaluating
   * expressions.
   */

  warnExpressionErrors: true,

  /**
   * Internal flag to indicate the delimiters have been
   * changed.
   *
   * @type {Boolean}
   */

  _delimitersChanged: true

}

/**
 * Interpolation delimiters.
 * We need to mark the changed flag so that the text parser
 * knows it needs to recompile the regex.
 *
 * @type {Array<String>}
 */

var delimiters = ['{{', '}}']
Object.defineProperty(module.exports, 'delimiters', {
  get: function () {
    return delimiters
  },
  set: function (val) {
    delimiters = val
    this._delimitersChanged = true
  }
})