react-native-firebase/lib/utils/ReferenceBase.js

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/**
* @flow
*/
export default class ReferenceBase {
path: string;
constructor(path: string) {
this.path = path || '/';
}
/**
* The last part of a Reference's path (after the last '/')
* The key of a root Reference is null.
* @type {String}
* {@link https://firebase.google.com/docs/reference/js/firebase.database.Reference#key}
*/
get key(): string | null {
return this.path === '/' ? null : this.path.substring(this.path.lastIndexOf('/') + 1);
}
}