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Reading a Configuration File in NodeJS

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Using NodeJS, its easy to read a configuration file using the fs module. To read a configuration file, we need to include the fs module, read in the configuration file and then parse it from JSON into a JavaScript variable. Given the following configuration file (configuration.json):

{
"database" : "mymongodb",
"username" : "mongouser",
"password" : "secret"
}

The configuration can be read using the following Node.js code:

var fs, configurationFile;

configurationFile = 'configuration.json';
fs = require('fs');

var configuration = JSON.parse(
fs.readFileSync(configurationFile)
);

console.log(configuration.database);
console.log(configuration.username);
console.log(configuration.password);

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