no-useless-parameters.rst

no-useless-parameters

Reject common XPCOM methods called with useless optional parameters (eg. Services.io.newURI(url, null, null), or non-existent parameters (eg. Services.obs.removeObserver(name, observer, false)).

This option can be autofixed (--fix).

Examples of incorrect code for this rule:

elt.addEventListener('click', handler, false);
Services.io.newURI('http://example.com', null, null);
Services.obs.notifyObservers(obj, 'topic', null);

Examples of correct code for this rule:

elt.addEventListener('click', handler);
Services.io.newURI('http://example.com');
Services.obs.notifyObservers(obj, 'topic');