script_file_upload.js

Enable keyboard shortcuts

/* eslint-env mozilla/chrome-script */

// eslint-disable-next-line mozilla/reject-importGlobalProperties

Cu.importGlobalProperties(["File"]);

addMessageListener("file.open", function (e) {

  var testFile = Cc["@mozilla.org/file/directory_service;1"]

    .getService(Ci.nsIDirectoryService)

    .QueryInterface(Ci.nsIProperties)

    .get("ProfD", Ci.nsIFile);

  testFile.append("prefs.js");

  File.createFromNsIFile(testFile).then(function (file) {

    sendAsyncMessage("file.opened", { file });

});

});