no-unreachable

NOTE: this rule is part of the 推荐 rule set.

Enable full set in deno.json:

{
  "lint": {
    "rules": {
      "tags": ["推荐"]
    }
  }
}

Enable full set using the Deno CLI:

deno lint --rules-tags=推荐

This rule can be explictly included to or excluded from the rules present in the current tag by adding it to the include or exclude array in deno.json:

{
  "lint": {
    "rules": {
      "include": ["no-unreachable"],
      "exclude": ["no-unreachable"]
    }
  }
}

禁止在控制流语句之后写无法到达的代码。

因为控制流语句（return、throw、break 和 continue）会无条件地退出代码块，所以它们后面的任何语句都无法执行。

无效示例:

function foo() {
  return true;
  console.log("完成");
}

function bar() {
  throw new Error("哎呀！");
  console.log("完成");
}

while (value) {
  break;
  console.log("完成");
}

throw new Error("哎呀！");
console.log("完成");

function baz() {
  if (Math.random() < 0.5) {
    return;
  } else {
    throw new Error();
  }
  console.log("完成");
}

for (;;) {}
console.log("完成");

有效示例:

function foo() {
  return bar();
  function bar() {
    return 1;
  }
}

no-unreachable

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