node.js tutorial: API calculator using Swagger

So let’s start the tutorial!!

1st step: Open the command line and use the following commands to create the project.

mkdir calculatorSwagger
cd calculatorSwagger
npm init

2nd step: Install the necessary dependencies (express and swagger-ui)

npm install express
npm install swagger-ui-express --save

3rd step: Create index.js and swagger.json files

touch index.js
touch swagger.json

4th step: Place the following code in the index.js file

5th step: Place the following code in the swagger.json file where we are going to create the elementary arithmetic operations (sum, subtraction, multiplication and division)

Last step: Run the project

node index.js

And test the operations

Sum operation
Subtraction operation
Multiplication operation
Division operation




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Afonso Antunes

Afonso Antunes

Finalist student in Computer Engineering

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