@thetsf/geofirex
Version:
Realtime Firestore GeoQueries with RxJS
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TypeScript
import { CollectionReference, Query } from "firebase/firestore";
import { Observable } from 'rxjs';
import { FirePoint } from './client';
import { FirebaseApp } from 'firebase/app';
export type QueryFn = (ref: CollectionReference) => Query;
export interface GeoQueryOptions {
units?: 'km';
log?: boolean;
}
export interface HitMetadata {
bearing: number;
distance: number;
}
export interface GeoQueryDocument {
hitMetadata: HitMetadata;
}
export declare class GeoFireQuery<T = any> {
private app;
private refString?;
private readonly ref;
constructor(app: FirebaseApp, refString?: string | undefined);
/**
* Queries the Firestore collection based on geograpic radius
* @param {FirePoint} center the starting point for the query, i.e gfx.point(lat, lng)
* @param {number} radius the radius to search from the centerpoint
* @param {string} field the document field that contains the FirePoint data
* @param {GeoQueryOptions} opts=defaultOpts
* @returns {Observable<GeoQueryDocument>} sorted by nearest to farthest
*/
within(center: FirePoint, radius: number, field: string, opts?: GeoQueryOptions): Observable<(GeoQueryDocument & T)[]>;
private queryPoint;
}
/**
* RxJS operator that converts a collection to a GeoJSON FeatureCollection
* @param {string} field the document field that contains the FirePoint
* @param {boolean=false} includeProps
*/
export declare function toGeoJSON(field: string, includeProps?: boolean): any;
/**
* Helper function to convert any query from an RxJS Observable to a Promise
* Example usage: await get( collection.within(a, b, c) )
* @param {Observable<any>} observable
* @returns {Promise<any>}
*/
export declare function get(observable: Observable<any>): Promise<any>;