no-unreachable

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

Enable full set in deno.json:

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

Enable full set using the Deno CLI:

deno lint --rules-tags=recommended

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"]
    }
  }
}

Disallows the unreachable code after the control flow statements.

Because the control flow statements (return, throw, break and continue) unconditionally exit a block of code, any statements after them cannot be executed.

Invalid:

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

function bar() {
  throw new Error("Oops!");
  console.log("done");
}

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

throw new Error("Oops!");
console.log("done");

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

for (;;) {}
console.log("done");

Valid:

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

no-unreachable

Did you find what you needed?