no-warn

Reports direct calls to the global warn() function.

Rule details Problem

This rule reports warn(...) when it is called as a global function. The rule does not take options.

The message points you toward a logging package instead, because raw warning output is hard to filter and harder to work with once a codebase gets larger.

This rule only matches the global function

It reports warn(...). It does not report method calls like logger.warn(...).

Examples

Incorrect

warn("API endpoint deprecated");
warn("Missing config property:", key);
warn("Unexpected state in component");

Correct

log.Warning("API endpoint deprecated");
log.Warning("Missing config property:", key);
logger.warn("Unexpected state in component");

Related rules

no-print Reports direct calls to print()

RbxUtil Log API Reference for one logging option on Roblox