Unable to deploy cloud functions - node.js

Question

when I deployed my functions following error came up I tried everything but I cannot solve the problem
I am writing the function for push notification i think i write the code correctly but i am not sure its correct or not
This is the error which I receive on CMD
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! functions# lint: `eslint .`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the functions# lint script.
npm ERR! This is probably not a problem with npm. There is likely
additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\000\AppData\Roaming\npm-cache\_logs\2018-07-
20T15_42_18_516Z-debug.log
Error: functions predeploy error: Command terminated with non-zero exit
code1
This is the LOG File
0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli 'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-
cli.js',
1 verbose cli '%RESOURCE_DIR%',
1 verbose cli 'run',
1 verbose cli 'lint' ]
2 info using npm#6.1.0
3 info using node#v10.4.1
4 verbose run-script [ 'prelint', 'lint', 'postlint' ]
5 info lifecycle functions#~prelint: functions#
6 info lifecycle functions#~lint: functions#
7 verbose lifecycle functions#~lint: unsafe-perm in lifecycle true
9 verbose lifecycle functions#~lint: CWD: C:\Users\000\fb-
functions\%RESOURCE_DIR%
10 silly lifecycle functions#~lint: Args: [ '/d /s /c', 'eslint .' ]
11 silly lifecycle functions#~lint: Returned: code: 1 signal: null
12 info lifecycle functions#~lint: Failed to exec lint script
13 verbose stack Error: functions# lint: `eslint .`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (C:\Program
Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:304:16)
13 verbose stack at EventEmitter.emit (events.js:182:13)
13 verbose stack at ChildProcess.<anonymous> (C:\Program
Files\nodejs\node_modules\npm\node_modules\npm-
lifecycle\lib\spawn.js:55:14)
13 verbose stack at ChildProcess.emit (events.js:182:13)
13 verbose stack at maybeClose (internal/child_process.js:961:16)
13 verbose stack at Process.ChildProcess._handle.onexit
(internal/child_process.js:248:5)
14 verbose pkgid functions#
15 verbose cwd C:\Users\000\fb-functions
16 verbose Windows_NT 10.0.10586
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program
Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "--prefix"
"%RESOURCE_DIR%" "run" "lint"
18 verbose node v10.4.1
19 verbose npm v6.1.0
20 error code ELIFECYCLE
21 error errno 1
22 error functions# lint: `eslint .`
22 error Exit status 1
23 error Failed at the functions# lint script.
23 error This is probably not a problem with npm. There is likely
additional logging output above.
24 verbose exit [ 1, true ]
This is the code which i wite in index.js
'use strict'
const functions = require('firebase-functions');
const admin = require ('firebase-admin');
admin.initializApp(functions.config().firebase);
exports.sendNotification=
functions.database.ref('/Notifications/${receiver_id}/{notification_id}')
.onWrite(event =>{
const receiver_id = event.params.receiver_id;
const notification_id = event.params.notification_id;
console.log('We have a Notifications to send to :',
receiver_id);
if (!event.data.val())
{
return console.log('A Notifications has been deleted from
the database', notification_id);
}
const deviceToken =
admin.database().ref(`/Users/${receiver_id}/device_token`)
.once('value');
return deviceToken.then(response =>
{
const token_id = result.val();
const payload =
{
notifications;
title: "Friend Request",
body: "You have a New Friend",
icon: "default"
return admin.messaging().sendToDevice(token_id, payload)
.then(response =>{
console.log('This was the notification feature.');
});
};
});
});

Answer 1

What version of Cloud Functions are you using? If you are on 1.0 or later, then there are a couple of things to resolve in the code. For one, the guide indicates that Realtime Database .onWrite triggers pass two parameters: change and context. Also, the path shouldn't have a "$" in it. Also, the parameters object appears to encompassing the second half of all of the code. And in that payload it says "notifications;", but I'm not sure what that's supposed to be. Seems like it should match the payload shown in the guide. There may yet be other errors I didn't catch. If it were me, I'd probably try getting a simpler function to successfully deploy, and then add to it piece by piece.
exports.sendNotification = functions.database.ref('/Notifications/{receiver_id}/{notification_id}')
.onWrite((change, context) => {
const receiver_id = context.params.receiver_id;
const notification_id = context.params.notification_id;
console.log('We have a Notifications to send to :', receiver_id);
if (!change.after.val()) {
return console.log('A Notifications has been deleted from the database', notification_id);
}
const deviceToken = admin.database().ref(`/Users/${receiver_id}/device_token`)
.once('value');
return deviceToken.then(response => {
const token_id = result.val();
const payload = {
notification: {
title: 'Friend Request',
body: 'You have a New Friend',
icon: 'default'
}
};
return admin.messaging().sendToDevice(token_id, payload)
.then(response => {
console.log('This was the notification feature.');
});
});
});