How to invoke a function in index.js written in Node.js

user_10633596 0
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I'm new to NodeJS and this might be a very basic question but I would appreciate if you can assist me here.

Following is my index.js file:-

'use-strict';

const { myauth } = require('./src/authorizer');

let response;

exports.handler = (event, context, callback) => {
    logger.info('hello....function invoked');
    try {
        logger.info(event);
        const resp = myauth(event, context, callback, logger);
        response = {
                'statusCode': 200,
                'body': JSON.stringify({
                    data: resp
                })
         }
    } catch (err) {
        logger.error('handler func', err);
        response = {
            'statusCode': 500,
            'body': JSON.stringify({
                message: err,
                data: false
            })
        }
    }
    return response;
}

Package.json:-

    {
  "name": "authorizer",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@types/node": "^13.13.5"
  },
  "devDependencies": {
    "chai": "^4.2.0",
    "mocha": "^6.1.4"
  }
}

When I execute the command like npm start, it does not invoke the logic written inside function in Index.js file.

Please let me know how to execute this function. Thanks

npm node.js ecmascript-6 javascript
1 Answers

im not sure what you mean with 'invoke', i presume you want to assign the returned function result at your variable. To do this, you can auto-invoke your function with this javascript sintax.

exports.handler = ((event, context, callback) => {
    logger.info('hello....function invoked');
    try {
        logger.info(event);
        const resp = myauth(event, context, callback, logger);
        response = {
                'statusCode': 200,
                'body': JSON.stringify({
                    data: resp
                })
         }
    } catch (err) {
        logger.error('handler func', err);
        response = {
            'statusCode': 500,
            'body': JSON.stringify({
                message: err,
                data: false
            })
        }
    }
    return response;
})();

let me know. Thanks!

user_135417670
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