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noFallthroughSwitchClause

诊断类别：lint/suspicious/noFallthroughSwitchClause

¥Diagnostic Category: lint/suspicious/noFallthroughSwitchClause

自从：v1.0.0

¥Since: v1.0.0

来源：

¥Sources:

禁止 switch 子句的 fallthrough。

¥Disallow fallthrough of switch clauses.

switch 语句中的 Switch 子句默认失败。如果忘记，这可能会导致意外行为。

¥Switch clauses in switch statements fall through by default. This can lead to unexpected behavior when forgotten.

该规则不考虑 process.exit()。

¥The rule doesn’t take process.exit() in consideration.

示例

Section titled 示例

¥Examples

无效

Section titled 无效

¥Invalid

switch (bar) {
  case 0:
    a();
  case 1:
    b();
}
code-block.js:2:2 lint/suspicious/noFallthroughSwitchClause ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This case is falling through to the next case.
  
    1 │ switch (bar) {
  > 2 │ 	case 0:
      │ 	^^^^^^^
  > 3 │ 		a();
      │ 		^^^^
    4 │ 	case 1:
    5 │ 		b();
  
  ℹ Add a break or return statement to the end of this case to prevent fallthrough.

有效

Section titled 有效

¥Valid

switch (foo) {
  case 1:
    case 2:
    doSomething();
    break;
    case 3: {
        if (cond) {
            break;
        } else {
            break;
        }
    }
  case 4:
    doSomething();
}

相关链接

Section titled 相关链接

¥Related links