Method isSameDataSource

docs/app/js/sanddance-app.js:51394–51400

(a, b)

        else window.removeEventListener(key, this.handlers[key]);
    }
    isSameDataSource(a, b) {
        if (a.dataSourceType === b.dataSourceType && a.type === b.type && a.id === b.id) {
            if (a.dataSourceType === "url") return a.dataUrl === b.dataUrl;
            return true;
        }
        return false;
    }
    hydrateSnapshot(snapshot, selectedSnapshotIndex = -1) {
        if (snapshot.dataSource) {
            if (this.isSameDataSource(snapshot.dataSource, this.state.dataSource)) {