Class Query

packages/firebase-database/index.ios.ts:188–325

}

export class Query implements IQuery {
	_native: FIRDatabaseQuery;

	static fromNative(query: FIRDatabaseQuery) {
		if (query instanceof FIRDatabaseQuery) {
			const q = new Query();
			q._native = query;
			return q;
		}
		return null;
	}

	get native() {
		return this._native;
	}

	get ios() {
		return this.native;
	}

	get ref(): Reference {
		return Reference.fromNative(this.native.ref);
	}

	endAt(value: string | number | boolean, key?: string): Query {
		if (key) {
			return Query.fromNative(this.native.queryEndingAtValueChildKey(value, key));
		} else {
			return Query.fromNative(this.native.queryEndingAtValue(value));
		}
	}

	equalTo(value: string | number | boolean, key?: string): Query {
		if (key) {
			return Query.fromNative(this.native.queryEqualToValueChildKey(value, key));
		} else {
			return Query.fromNative(this.native.queryEqualToValue(value));
		}
	}

	keepSynced(bool: boolean) {
		this.native?.keepSynced?.(bool);
	}

	limitToFirst(limit: number): Query {
		return Query.fromNative(this.native.queryLimitedToFirst(limit));
	}

	limitToLast(limit: number): Query {
		return Query.fromNative(this.native.queryLimitedToLast(limit));
	}

	_handles: Map<(a: DataSnapshot, b: string) => void, number> = new Map();

	off(eventType?: EventType, callback?: (a: DataSnapshot, b: string) => void, context?: Record<string, any>): void {
		const handle = callback?.['__fbHandle'];
		const event = callback?.['__fbEventType'];
		if (typeof handle === 'number' && event === eventType) {