Why is this an issue?

When exceptions occur, it is usually a bad idea to simply ignore them. Instead, it is better to handle them properly, or at least to log them.

Noncompliant code example

function f() {
  try {
    doSomething();
    doSomethingElse();
  } catch (err) {
  }
}

Compliant solution

function f() {
  try {
    doSomething();
    doSomethingElse();
  } catch (err) {
    console.log(`Exception while doing something: ${err}`);
  }
}

Exceptions

A catch block containing no statements is not considered empty when it holds a comment explaining why the exception is ignored:

function f() {
  try {
    doSomething();
    doSomethingElse();
  } catch (err) {
    // The exception is intentionally ignored
  }
}

A try block guarding a single statement is allowed to leave the exception unhandled, as it clearly expresses an operation attempted on a best-effort basis:

function f() {
  try {
    doSomething();
  } catch (err) {
  }
}

Resources