Rated 5 out of 5 stars

by Yinong Wang on Aug. 8, 2025 · permalink

I am the maintainer of a similar add-on.
The update of Thunderbird 138 breaks the add-on by no longer supporting JSM scripts.

Please migrate the dependency to the corresponding ESM package.

const { ExtensionCommon } = ChromeUtils.importESModule("resource://gre/modules/ExtensionCommon.sys.mjs");