Run ffi-napi on ARM architecture

I am new to nodejs. I am trying to import the C library(.so) into nodejs using ffi-napi.
Whenever I try to run simple node js application, I encounter below errors

node calculate.js

module.js:540
throw err;
^

Error: Cannot find module ‘ffi-napi’
at Function.Module._resolveFilename (module.js:538:15)
at Function.Module._load (module.js:468:25)
at Module.require (module.js:587:17)
at require (internal/module.js:11:18)
at Object. (/iwtest/nodejs/calculate.js:1:73)
at Module._compile (module.js:643:30)
at Object.Module._extensions…js (module.js:654:10)
at Module.load (module.js:556:32)
at tryModuleLoad (module.js:499:12)
at Function.Module._load (module.js:491:3)

Please suggest me how to cross-compile ffi-napi into ARM architecture.
I can’t use npm install ffi-napi because my device doesn’t support internet.