UnitApi / js

include/include-file.js

function printFile(file) {
    var reader = new FileReader();

The variable FileReader seems to be never declared. If this is a global, consider adding a /** global: FileReader */ comment.

    reader.onload = function(evt) {
        console.log(evt.target.result);

console.log looks like debug code. Are you sure you do not want to remove it?

    };
    reader.readAsText(file);
}