Defining public Constants file in node.js

You write constants object into TRIP_STATUS object. So, you can get them with the next way:

console.log(Constants.TRIP_STATUS.TRIP_STAUTS_INITIATED);

Or, you can do with the next way:

module.exports = {
    TRIP_STAUTS_INITIATED         : 1000,
    ...
}

And get constants as you want:

console.log(Constants.TRIP_STAUTS_INITIATED);

constants is a native module of Node.js like fs, http, so require("constants") will only output native constants. If you want to import your local constant.js, you should require("./constants")(ABSOLUTE PATH NOT RELATIVE ONE).