firestore-parser · 
Parse the Firestore REST API JSON into a useable JS object
Installation
// Install with NPM
npm install firestore-parser --save
// or Install with Yarn
yarn add firestore-parser
Examples
// Node/AMD:
// const FireStoreParser = require('firestore-parser');
// Node with TypeScript:
// import * as FireStoreParser from 'firestore-parser';
import FireStoreParser from 'firestore-parser'
const projectID = 'PROJECT_ID'
const key = 'API_KEY'
const doc = 'DOCUMENT'
const url = `https://firestore.googleapis.com/v1beta1/projects/${projectID}/databases/(default)/documents/${doc}?key=${key}`
fetch(url)
.then(response => response.json())
.then(json => FireStoreParser(json))
.then(json => console.log(json));Data Structure
The Firestore JSON returned in the REST API, uses value type as keys. This can be difficult to work with since you have to know the data type prior getting the value. The firestore-parser removes this barrier for you.
JSON response from Firestore
{
"player": {
"mapValue": {
"fields": {
"name": {
"stringValue": "steve"
},
"health": {
"integerValue": "100"
},
"alive": {
"booleanValue": true
}
}
}
},
"level": {
"integerValue": "7"
}
}
JSON parsed with firestore-parser
{
"player": {
"name": "steve",
"health": 100,
"alive": true
},
"level": 7
}