JS regex advice

[GCAT01]

I am trying to create a filter rule to move emails that come in to my "orders" address to a folder if and only if they have certain words in the subject field. For example:
Subject: Here are your shipping details
To: myorders@tutamail

JS regex: /subject:(?=.*ship|.*order|.*invoice)(?=to:.*myorders@tutamail)/gmis

However, I am running into a problem as adding the ".*" in the subject lookahead is matching anything and everything in the header. How can I make this work?

[charlag]

this works I think:

subject: .*(ship|order|details).*\nto: myorders@tutamail

https://regex101.com/r/8UzWDV/1

[charlag]

missing one match before email address but you got the idea

[GCAT01]

Honestly, I don't know what the problem was but without changing a thing it is working beautifully. I can order things and get the order-related emails in my inbox but all of the other garbage I'm sent (the spam you get once companies have your email) just gets trashed.