Inspired by [e-mail]:miktam/sizeof.git

firestore-size

This tiny package calculates the approximate size (in bytes) of a Firestore document.

Installation

npm i firestore-size

Usage

import sizeof from 'firestore-size'

const snapshot = db
      .collection("data")
      .doc(id)
      .get();
const data = snapshot.data(); 

const bytes = sizeof(data);
console.log( bytes > 1000 ? "I'm in awe of the size of this lad!": "Ew..")
console.log( typeof bytes === 'number'); //true

How it works

• Array - The sum of the sizes of its values
• Boolean - 1 byte
• Bytes - Byte length
• Date and time - 8 bytes
• Floating-point number - 8 bytes
• Geographical point - 16 bytes
• Integer - 8 bytes
• Map - The size of the map, calculated the same way as document size
• Null - 1 byte
• Reference - The document name size
• Text string - Number of UTF-8 encoded bytes + 1

More on how the size is calculated in firestore docs - documentation

Important notice

Does not take into account the name of a document.

For a document in the subcollection users/jeff/tasks with a string document ID of my_task_id, the document name size is 6 + 5 + 6 + 11 + 16 = 44 bytes. More about it in the docs.

Does not take into account indexing. Indexes can be disabled - docs - to free up more space.

Caught a Bug?

Fork this repository to your own GitHub account and then clone it to your local device

As always, you can run the tests using: npm test