No noUnusedLocals warning for recursive arrow function

[Profesor08]

🔎 Search Terms

typescript recursive arrow function warning

🕗 Version & Regression Information

Version 5.3.3

⏯ Playground Link

https://www.typescriptlang.org/play?noUncheckedIndexedAccess=true&useDefineForClassFields=true&allowUnreachableCode=true&allowUnusedLabels=true&downlevelIteration=true&noLib=true&noUnusedLocals=true&noUnusedParameters=true&experimentalDecorators=true&emitDecoratorMetadata=true&target=99&exactOptionalPropertyTypes=true&noFallthroughCasesInSwitch=true&noImplicitOverride=true&noPropertyAccessFromIndexSignature=true&isolatedModules=true&inlineSourceMap=false&inlineSources=false&allowSyntheticDefaultImports=true&useUnknownInCatchVariables=true&allowArbitraryExtensions=true&resolvePackageJsonImports=true&resolvePackageJsonExports=true&allowImportingTsExtensions=false&allowUmdGlobalAccess=false&suppressImplicitAnyIndexErrors=true&importHelpers=true#code/N4KABGDGD2B2DOAXMAzWBGMBeMAKAlAFxgBG00ANgKYCGs2AfGKBBAE5WICub9a6BANzgwAX2EiUXWJEQBLOKlgAmAsTKVa9Fqw7deS1fmERxISdNkK+sAMxrS5anWYj2nHvURsuVE2OFRECA

💻 Code

{
  const fn1 = (): boolean => {
    return fn1();
  };

  function fn2(): boolean {
    return fn2();
  };

  function fn3(): boolean {
    return true;
  };
}

🙁 Actual behavior

fn1 has recursion, and this function is not used, but there is no warning. fn2, fn3 has warning.

🙂 Expected behavior

fn1, fn2, fn3 to have wanings

Additional information about the issue

No response

[MartinJohns]

Duplicate of #45360. Used search terms: recursive unused in:title