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MimeType - Web APIs | MDN
MimeType.type
Deprecated
Returns the MIME type of the associated plugin.
MimeType.description
Deprecated
Returns a description of the associated plugin or an empty string if there is none.
MimeType.suffixes
Deprecated
A string containing valid file extensions for the data displayed by the plugin, or an empty string if an extension is not valid for the particular module. For example, a browser's content decryption module may appear in the plugin list but support more file extensions than can be anticipated. It might therefore return an empty string.
MimeType.enabledPlugin
Deprecated
Returns an instance of Plugin
