TSConfig

When:

• undefined (default) provide suggestions as warnings to editors
• true unused labels are ignored
• false raises compiler errors about unused labels

Labels are very rare in JavaScript and typically indicate an attempt to write an object literal:

ts
function verifyAge(age: number) {
  // Forgot 'return' statement
  if (age > 18) {
    verified: true;
Unused label.7028Unused label.
  }
}Try