Deleting Child in raw-bus-location after 10 seconds

[Maphila]

I'm trying to delete child (Trip) in raw-bus location (Firebase) after 10 seconds. But getting errors in code, still learning node js. Any help is much appreciated.

exports.DeleteChild = class { constructor(timeRef, rawBusLocationsRef, cutoff, oldItemsQuery ){ this.timeRef = timeRef; this.rawBusLocationsRef = rawBusLocationsRef; this.cutoff = cutoff; this.oldItemsQuery = oldItemsQuery;

// Change the panel once every ten seconds
this.timeTimerId = setInterval(() => {
  this.deleteChild();
}, 10000);

}

deleteChild(){ this.cutoff = this.timeRef - 10000; this.oldItemsQuery = this.rawBusLocationsRef.orderByChild('timestamp').endAt(this.cutoff); return this.oldItemsQuery.once('value').then((snapshot) => { // create a map with all children that need to be removed const updates = {}; snapshot.forEach(child => {updates[child.key] = null;}); // execute all updates in one go and return the result to end the function return this.rawBusLocationsRef.update(updates); }); }};

and the error is:

/*

• Error: Query.endAt failed: first argument contains NaN in property 'raw-bus-location' at validateFirebaseData (/home/maphilak/server4r/node_modules/@firebase/database/dist/index.nod e.cjs.js:1443:15) at validateFirebaseDataArg (/home/maphilak/server4r/node_modules/@firebase/database/dist/index. node.cjs.js:1421:5) at Query.endAt (/home/maphilak/server4r/node_modules/@firebase/database/dist/index.node.cjs.js: 4985:9) at exports.DeleteChild.deleteChild (/home/maphilak/server4r/delete_child.js:23:74) at Timeout.timeTimerId.setInterval [as _onTimeout] (/home/maphilak/server4r/delete_child.js:16:

12. at ontimeout (timers.js:475:11) at tryOnTimeout (timers.js:310:5) at Timer.listOnTimeout (timers.js:270:5) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! [email protected] main: node main.js npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the [email protected] main 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! /home/maphilak/.npm/_logs/2018-11-30T10_50_04_443Z-debug.log */

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. Please comment here if it is still valid so that we can reprioritize. Thank you!

[Maphila]

Please reprioritize

On Fri, 4 Oct 2019 at 01:04, stale[bot] [email protected] wrote:

This issue has been automatically marked as stale because it has not had recent activity. Please comment here if it is still valid so that we can reprioritize. Thank you!

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