What separates the various methods of initiating a node+express application?

As I delve into the world of Node and Express, I've come across multiple methods for initializing an application. Specifically, I've been working on a project called "nodetest" and here are the initial steps I took:

  • Firstly, I installed express and express-generator using npm.
  • Next, I used the command: express nodetest
  • Then, I navigated to the nodetest directory and ran: cd nodetest && npm install

In my research, I found three distinct ways in which one can initiate a node+express application:

  1. To run with debugging enabled: DEBUG=nodetest ./bin/www
  2. To start using Node.js directly: node ./bin/www
  3. Simpler yet still effective option: ./bin/www

My question now is how these methods differ from each other and when would be the appropriate scenario to use each?

node.jsexpressnpm

Answer №1

  1. In order to execute the script ./bin/www, you are setting the DEBUG environment variable to nodetest and running it through the node interpreter, assuming it contains #!/usr/bin/env node
  2. You are directly instructing the node interpreter to run the script ./bin/www
  3. By starting the ./bin/www script, you are relying on your shell to interpret and execute it (similar to case 1)

Case 2 and 3 have the same outcome. Case 1 is similar to Cases 2 and 3 except for the additional step of setting the DEBUG environment variable.

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