How to make hammer.js recognize double-finger pan, first and then recognize single-finger pan when both fingers are off the screen

can it be done simply through his api (requireFailure,recgnizeWith, etc.)?

here is an example I wrote. Please help me improve the above requirements
https://codepen.io/russell201.

if it is more complicated, I think it can also be judged by the isFinal returned by him, but the code is very verbose.

Javascript vue.js react.js hammerjs

Mar.13,2022

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