FireIndex

Utility functions to count the number of documents in a FireStore collection.

Installation

npm install @endran/fireindex --save

or

yarn add @endran/fireindex

Usage

In your index.ts file, add the following.

exports.fireIndex = {
  create1: functions.firestore.document('{col1}/{doc1}').onCreate((snap) => FireIndex.create(snap.ref.path)),
  delete1: functions.firestore.document('{col1}/{doc1}').onDelete((snap) => FireIndex.delete(snap.ref.path)),
  create2: functions.firestore.document('{col1}/{doc1}/{col2}/{doc2}').onCreate((snap) => FireIndex.create(snap.ref.path)),
  delete2: functions.firestore.document('{col1}/{doc1}/{col2}/{doc2}').onDelete((snap) => FireIndex.delete(snap.ref.path)),
};

Add additional functions as your database has levels of nesting. Refrain from usage of onUpdate, since onUpdate fires much more often and does not change the number of documents in a collection.

FireIndex create a new collection called _fireIndex, and for each collection in your database it will create a document. When a document, ie: someCol/someDoc/nestedCol/nestedDoc is created, the document _fireIndex/someCol__someDoc__nestedCol gets updated. These documents only have 1 number property, called count.

To change the FireIndex collection, you can either set FireIndex.FIRE_INDEX_COLLECTION = 'myCustomCollection', or with every call to FireIndex supply a path like FireIndex.create(snap.ref.path, 'myCustomCollection').

License

The MIT License.

Copyright 2020 codecentric nl / David Hardy

Permission is hereby granted, free of charge, to any person
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Software is furnished to do so, subject to the following
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The above copyright notice and this permission notice shall be
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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