firebase-functons Node.js - TypeError: Cannot read property ... of undefined

[Justin Jerzak]

I'm seing a simple webhook throwing the following error:

node.js v8.9.4

TypeError: Cannot read property 'quantity' of undefined 

at exports.webhook.functions.https.onRequest (/user_code/index.js:14:22) 

at cloudFunction (/user_code/node_modules/firebase-functions/lib/providers/https.js:26:41) 

at /var/tmp/worker/worker.js:671:7 

at /var/tmp/worker/worker.js:655:9 

at _combinedTickCallback (internal/process/next_tick.js:73:7) 

at process._tickDomainCallback (internal/process/next_tick.js:128:9)

request.body.result.parameters: { Quantity: 8, FoodType: [ 'Solid Food' ], FoodSource: [ 'Refrigerator' ], Units: 'Ounces' }

package.json

...

  "dependencies": {

    "firebase-admin": "~5.8.1",

    "firebase-functions": "^0.8.1"

  },

index.js:

const functions = require('firebase-functions');

// // Create and Deploy Your First Cloud Functions

// // https://firebase.google.com/docs/functions/write-firebase-functions

//

exports.webhook = functions.https.onRequest((request, response) => {

console.log("request.body.result.parameters: ", request.body.result.parameters);

let params = request.body.result.paramters;

response.send({

speech:

`${params.Quantity} ${params.Units} of ${params.FoodType} from the ${params.FoodSource}`

});

});

I've seen similar reports, most of which referenced an issue with version 8, which should be resolved in version 8.1 of node

Tried: 

Updated the dependency versions to older versions known to not have this issue

re-installed: npm install -g firebase-tools

Removed the 'Quantity' parameter then got the same error related to 'Units' parameter

[Doug Stevenson]

The errors are clear that, in your function, params is undefined.  This means that request.body.result.paramters is undefined.  What exactly are you sending to your function?  Have you tried logging the value of request.body to see what it's receiving?

Doug

[Renaud Tarnec]

It seems there is a typo in your code

params = request.body.result.paramters

and not 

params = request.body.result.paramEters

See the e missing in the first version.