Function assertType

m3u8/vue.js:1732–1753

(value, type)

  var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;

  function assertType (value, type) {
    var valid;
    var expectedType = getType(type);
    if (simpleCheckRE.test(expectedType)) {
      var t = typeof value;
      valid = t === expectedType.toLowerCase();
      // for primitive wrapper objects
      if (!valid && t === 'object') {
        valid = value instanceof type;
      }
    } else if (expectedType === 'Object') {
      valid = isPlainObject(value);
    } else if (expectedType === 'Array') {
      valid = Array.isArray(value);
    } else {
      valid = value instanceof type;
    }
    return {
      valid: valid,
      expectedType: expectedType
    }
  }

  /**
   * Use function string name to check built-in types,