flutter web build JS function with external JS library

I am going to build the JS function which calls external JS library.

// import external library
import 'https://cdn.jsdelivr.net/npm/[email protected]/dist/pica.min.js';

function resize(param) {
    var src = param["src"];
    var toWidth = param["toWidth"];    
    //var callback = param["callback"];
    
    // call function in external library
    return resizeBuffer({
        src: src,
        toWidth: toWidth,

    });
}

Is this correct?