Function toString

m3u8/vue.js:95–101

* Convert a value to a string that is actually rendered.

(val)

   * Convert a value to a string that is actually rendered.
   */
  function toString (val) {
    return val == null
      ? ''
      : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
        ? JSON.stringify(val, null, 2)
        : String(val)
  }

  /**
   * Convert an input value to a number for persistence.