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firefox/docs/code-quality/lint/linters/eslint-plugin-mozilla/rules/balanced-observers.rst
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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balanced-observers
==================
Checks that for every occurrence of ``addObserver`` there is an
occurrence of ``removeObserver`` with the same topic.
Examples of incorrect code for this rule:
-----------------------------------------
.. code-block:: js
Services.obs.addObserver(observer, 'observable');
Examples of correct code for this rule:
---------------------------------------
.. code-block:: js
Services.obs.addObserver(observer, 'observable');
Services.obs.removeObserver(observer, 'observable');