In nightwatch framework difference nightwatch.conf.BASIC.js vs nightwatch.conf.js - node.js

Question

What is the difference between nightwatch.conf.BASIC.js and
nightwatch.conf.js in nightwatch framework.
And what is basic requirement for setup nightwatch framework with
node js and selenium

Answer 1

There is no differences between nightwatch.conf.BASIC.js and nightwatch.conf.js.
You have just to know 5 things:
You can name your config file as you want (nightwatch.conf.BASIC.js, nightwatch.json, nightwatch.conf.js or anything.json or anything.js)
You can have more than 1 config file per project.
When you put your Nightwatch configuration in a file named nightwatch.json or nightwatch.conf.js you don't need to say which configuration file should be used since
A nightwatch.conf.js file or a nightwatch.json file will also be loaded by default, if found.
Just keep in mind that:
The nightwatch.conf.js always takes precedence over
nightwatch.json if both are present.
In this case, you can launch your tests like this:
$> nightwatch
When you put your Nightwatch configuration in an other file, you must tell Nightwatch where are the configurations to use. In this case you need to write your tests like this (for example in Node.js):
module.exports = (function(settings) {
//....
})(require('path/to.your/config/file'));
or
var config = require('path/to.your/config/file');
module.exports = {
//....
};
In this case, you need to specify which configuration file to take when launching tests:
$> nightwatch --config path/to.your/config/file
Since naming your config file nightwatch.conf.js or nightwatch.json doesn't change anything to Nightwatch, is there a reason to choose one and not the other?
Answer: Yes!
Why?: Sometimes you need to write a JavaScript code in your configuration file. In this case your file should be a .js file and not a .json file.
Example of use? When you have many environments to test, maybe you don't want to update many lines to change the same information. So you write a nightwatch.conf.js (The objective is to just change one line when you want to deactivate video instead of going to each environment in a .json file and make changes):
nightwatch_config = {
src_folders : [ "a/file/to/test" ],
selenium : {/*...*/},
common_capabilities: {/*...*/},
test_settings: {
default: {},
chrome: {desiredCapabilities: {browser: "chrome"}},
firefox: {desiredCapabilities: {browser: "firefox"}},
safari: {desiredCapabilities: {browser: "safari"}},
ie: {desiredCapabilities: {browser: "internet explorer"}}
}
};
for(var i in nightwatch_config.test_settings){
var config = nightwatch_config.test_settings[i];
for(var j in nightwatch_config.common_capabilities){
config['desiredCapabilities'][j][browserstack.video] = true;
}
}
module.exports = nightwatch_config;