Cloud Functions: Detailed stack trace: Error: Cannot find module 'googleapis' - google-cloud-platform

Question

This is related to these 2 threads:
Google cloud functions - cannot read property 'getApplicationDefault'
Triggering Cloud Dataflow pipeline from Cloud Function - function times out
I have created a dataflow template that will copy data from GCS to BigQuery as these two examples.
As part of the initialization process, I run
npm init
npm install --save googleapis
Here is my index.js
var {google} = require('googleapis');
exports.goWithTheDataFlow = (event, callback) => {
const file = event.data;
const context = event.context;
console.log(`Event ${context.eventId}`);
console.log(` Event Type: ${context.eventType}`);
console.log(` Bucket: ${file.bucket}`);
console.log(` File: ${file.name}`);
console.log(` Metageneration: ${file.metageneration}`);
console.log(` Created: ${file.timeCreated}`);
console.log(` Updated: ${file.updated}`);
google.auth.getApplicationDefault(function (err, authClient, projectId) {
if (err) {
throw err;
}
console.log(projectId);
const dataflow = google.dataflow({ version: 'v1b3', auth: authClient });
console.log(`gs://${file.bucket}/${file.name}`);
dataflow.projects.templates.create({
projectId: projectId,
resource: {
parameters: {
inputFile: `gs://${file.bucket}/${file.name}`
},
jobName: 'cloud-fn-beam-test',
gcsPath: 'gs://goldsgymdemo/templates/MyGCStoBQDFTemplate'
}
}, function(err, response) {
if (err) {
console.error("problem running dataflow template, error was: ", err);
}
console.log("Dataflow template response: ", response);
callback();
});
});
callback();
};
And here is my package.json (after I have run npm init & npm install --save googleapis)
{
"name": "sample-cloud-storage",
"version": "0.0.1"
}
When I run this function with function: goWithTheDataFlow & Trigger:
I get an error:
Deployment failure:
Function load error: Code in file index.js can't be loaded.
Did you list all required modules in the package.json dependencies?
Detailed stack trace: Error: Cannot find module 'googleapis'
at Function.Module._resolveFilename (module.js:476:15)
at Function.Module._load (module.js:424:25)
at Module.require (module.js:504:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/user_code/index.js:1:78)
at Module._compile (module.js:577:32)
at Object.Module._extensions..js (module.js:586:10)
at Module.load (module.js:494:32)
at tryModuleLoad (module.js:453:12)
at Function.Module._load (module.js:445:3)
Can you please help? What am I missing?
Thx

Answer 1

You are missing dependencies in your package.json file. Add googleapis dependency to it:
{
"name": "sample-cloud-storage",
"version": "0.0.1",
"dependencies": {
"googleapis": "^21.3.0"
}
}

Answer 2

It worked for me when I changed directory into the functions folder, instead of the firebase project folder and did a package install in there
cd functions
npm install [your missing package] --save

Answer 3

in my case, I accidentally use devDependecy module in a file that uploaded to Firebase.
for example, in my User model class I use a property or method from this dependency
import * as firebase from "#firebase/rules-unit-testing";
but in the package.json file, that dependcy is located in devDependecy like this
"devDependencies": {
"#firebase/rules-unit-testing": "^1.3.14",
},
devDependencies will not deployed to the server, thats why I have "Can't find module" error