A pasta do plugin está localizada em ~ / Library / Application Support / Firefox / Profiles / [nome do perfil] / extensions, mas alguns plugins podem estar localizados em diretórios diferentes. Eu estava procurando por uma extensão instalada do Avast, e não consegui encontrá-la no diretório extensões ; Então, olhei para ~ / Library / Application Support / Firefox / Profiles / [nome do perfil] /extensions.json, cujo conteúdo era semelhante ao seguinte.
{
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]
}
descriptor
contém o nome completo do arquivo da extensão.