Retrieve the most recently added child from the Firebase cloud function

Seeking assistance in retrieving the most recently added child in a cloud function. Below is the code snippet I am using and I'm curious if there is a specific function or query I can utilize to achieve this task without having to iterate through each child element.

exports.makeUppercase = functions.database.ref('aaa-fff/searchIndex')
    .onWrite(event => {
   // all records after the last continue to invoke this function
   console.log(event.data.val());
   console.log(event.data.numChildren());
});

Note: Avoiding looping through children elements is preferred in my case.

Answer №1

Your specific use-case may vary, but the following code will help you grab the last child element:

exports.makeUppercase = functions.database.ref('aaa-fff/searchIndex')
    .onWrite((change, context) => {
   // This function will be triggered for each record after the last one
   var lastChild;
   change.after.forEach(function(child) {
       lastChild = child;
   });
   console.log(lastChild.val());
});

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