noNewSymbol

诊断类别：lint/correctness/noNewSymbol

¥Diagnostic Category: lint/correctness/noNewSymbol

JavaScript (and super languages)

自从：v1.0.0

¥Since: v1.0.0

来源：

¥Sources:

与以下相同：no-new-symbol

¥Same as: no-new-symbol

禁止将 new 运算符与 Symbol 对象一起使用。

¥Disallow new operators with the Symbol object.

Symbol 无法实例化。这会导致抛出 TypeError。

¥Symbol cannot be instantiated. This results in throwing a TypeError.

示例

¥Examples

无效

¥Invalid

var foo = new Symbol('foo');

code-block.js:1:11 lint/correctness/noNewSymbol  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ⚠ Symbol cannot be called as a constructor.
  
  > 1 │ var foo = new Symbol(‘foo’);
      │           ^^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Unsafe fix: Remove new.
  
    1 │ var·foo·=·new·Symbol(‘foo’);
      │           ----

有效

¥Valid

var bar = Symbol('bar');
function baz() {
    function Symbol() { }
    new Symbol();
}

noNewSymbol

示例

无效

有效

相关链接