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Environment variables

Code example

// process is global variable.
if (process.env.NODE_ENV == 'http')
{
    console.log('Start HTTP server');
}
else
{
    console.log('Start HTTPS server');
}

calling example 1:

$ NODE_ENV=http node index.js

Start HTTP server # output

calling example 2:

$ NODE_ENV=https node index.js

Start HTTPS server # output

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