I think right now your best bet is to convert your document to markdown (pandoc can do this, for instance) and import the resulting markdown to Joplin.
Typora imports doc and docx files, then you can save them as .md but you'll have to make this one by one.
The only other way that might work for batch conversion is through Scrivener. It imports docx and lots of other formats and exports to lots too, including multimarkdown.
#1 - Is Both Typora and Scrivener is open-source? #2 - Is there is any Joplin plugin which can be used to import or convert ms-word to md files or import into Joplin? #3 - Is there is any Joplin plugin is on progress to do the import of ms-word to Joplin?
Is there a anyone can publish list of useful plugin needs in the future, so that someone can write the plugin for Joplin? example import ms word document would be one of the choice which many would prefer it. Just a thought
Is any Pandora expert on this forum to assist this or give suggestion on how to overcome?