Batch write to firebase cloud firestore

Question

I want to create a new collection and add thousands of documents sized ~ 1-2K to it. I already have data in json so I thought this would be easy.

I understand that b

Answer 1

This works for me:

function loadJson(){
    var ref = firebase.firestore().collection("my-parent-collection-name");
    getJSON("https://my-target-domain.com/my-500-plus-objects-file.json").then(function (data) {
        var counter = 0;
        var commitCounter = 0;
        var batches = [];
        batches[commitCounter] = db.batch();
        Object.keys(data).forEach(function(k, i) {
            if(counter <= 498){
                var thisRef = ref.doc(k);
                batches[commitCounter].set(thisRef, data[k]);
                counter = counter + 1;
            } else {
                counter = 0;
                commitCounter = commitCounter + 1;
                batches[commitCounter] = db.batch();
            }
        });
        for (var i = 0; i < batches.length; i++) {
            batches[i].commit().then(function () {
                console.count('wrote batch');
            });
        }
    }, function (status) {
        console.log('failed');
    });

}
loadJson();