Failed to deploy Cloud Functions after upgrading to node 14 - google-cloud-functions

Question

After bumping the node version on my Firebase project from node 10 to node 14 in my package.json, like so:
...
"engines": {
"node": "14"
},
...
Firebase throws an error whenever I try to deploy a function.
First, I run:
firebase deploy --only functions:foo
Afterwards, the console shows:
i deploying functions
Running command: npm --prefix "$RESOURCE_DIR" run lint
> lint
> gts lint
version: 14
Running command: npm --prefix "$RESOURCE_DIR" run build
> build
> ttsc
✔ functions: Finished running predeploy script.
i functions: ensuring required API cloudfunctions.googleapis.com is enabled...
i functions: ensuring required API cloudbuild.googleapis.com is enabled...
✔ functions: required API cloudbuild.googleapis.com is enabled
✔ functions: required API cloudfunctions.googleapis.com is enabled
i functions: preparing functions directory for uploading...
i functions: packaged functions (257.54 KB) for uploading
i pubsub: ensuring required API pubsub.googleapis.com is enabled...
i scheduler: ensuring required API cloudscheduler.googleapis.com is enabled...
✔ pubsub: required API pubsub.googleapis.com is enabled
✔ scheduler: required API cloudscheduler.googleapis.com is enabled
✔ functions: functions folder uploaded successfully
i functions: updating Node.js 14 function foo(us-central1)...
✔ functions[foo(us-central1)]: Successful upsert schedule operation.
Functions deploy had errors with the following functions:
foo(us-central1)
To try redeploying those functions, run:
firebase deploy --only "functions:foo"
To continue deploying other features (such as database), run:
firebase deploy --except functions
Error: Functions did not deploy properly.
Unfortunately, there's not much logs that I can get from the error:
By running:
firebase deploy --only functions:foo
I get the following error logs:
{"code":3,"message":"Build failed: > sharp#0.28.3 install /workspace/node_modules/sharp\n> (node install/libvips && node install/dll-copy && prebuild-install) || (node install/can-compile && node-gyp rebuild && node install/dll-copy)\n\nsharp: Downloading https://github.com/lovell/sharp-libvips/releases/download/v8.10.6/libvips-8.10.6-linux-x64.tar.br\n\n> protobufjs#6.10.2 postinstall /workspace/node_modules/protobufjs\n> node scripts/postinstall\n\n\n> functions#undefined prepare /workspace\n> npm run compile\n\n\n> functions# compile /workspace\n> ttsc\n\nsh: 1: ttsc: not found\nnpm ERR! code ELIFECYCLE\nnpm ERR! syscall spawn\nnpm ERR! file sh\nnpm ERR! errno ENOENT\nnpm ERR! functions# compile: ttsc\nnpm ERR! spawn ENOENT\nnpm ERR! \nnpm ERR! Failed at the functions# compile script.\nnpm ERR! This is probably not a problem with npm. There is likely additional logging output above.\n\nnpm ERR! A complete log of this run can be found in:\nnpm ERR! /builder/home/.npm/_cacache/_logs/2021-06-06T04_27_25_637Z-debug.log\nnpm ERR! code ELIFECYCLE\nnpm ERR! errno 1\nnpm ERR! functions#undefined prepare: npm run compile\nnpm ERR! Exit status 1\nnpm ERR! \nnpm ERR! Failed at the functions#undefined prepare script.\nnpm ERR! This is probably not a problem with npm. There is likely additional logging output above.\n\nnpm ERR! A complete log of this run can be found in:\nnpm ERR! /builder/home/.npm/_logs/2021-06-06T04_27_25_673Z-debug.log; Error ID: beaf8772"}
In addition, my node version is:
node --version
v14.17.0

Answer 1

After looking at the Cloud Build from the Google Cloud Console, I've noticed that the following error:
2021-06-07T03:28:00.714478581ZStep #4 - "builder": src/cloud_functions/userInfo/https/onCall/uploadAvatar.ts(4,19): error TS7016: Could not find a declaration file for module 'sharp'. '/workspace/node_modules/sharp/lib/index.js' implicitly has an 'any' type.
To fix this, I simply added the following code in the tsconfig.json:
{
"compilerOptions": {
"noImplicitAny": false,
...
},
...
}