Repository: apache/superset
File: superset-frontend/src/dashboard/actions/dashboardState.js (JavaScript)

Code before:
      slug,
      tags,
    } = data;

    const hasId = item => item.id !== undefined;
    const metadataCrossFiltersEnabled = data.metadata?.cross_filters_enabled;
    const colorScheme = data.metadata?.color_scheme;
    const customLabelsColor = data.metadata?.label_colors || {};
    const sharedLabelsColor = enforceSharedLabelsColorsArray(
      data.metadata?.shared_label_colors,
    );
    const cleanedData = {
      ...data,
      certified_by: certified_by || '',
      certification_details:
        certified_by && certification_details ? certification_details : '',
      css: css || '',
      dashboard_title: dashboard_title || t('[ untitled dashboard ]'),
      owners: ensureIsArray(owners).map(o => (hasId(o) ? o.id : o)),
      roles: !isFeatureEnabled(FeatureFlag.DashboardRbac)
        ? undefined
        : ensureIsArray(roles).map(r => (hasId(r) ? r.id : r)),
      slug: slug || null,
      tags: !isFeatureEnabled(FeatureFlag.TaggingSystem)
        ? undefined
        : ensureIsArray(tags).map(r => (hasId(r) ? r.id : r)),
      metadata: {
        ...data.metadata,
        color_namespace: getColorNamespace(data.metadata?.color_namespace),
        color_scheme: colorScheme || '',
        color_scheme_domain: colorScheme
          ? getColorSchemeDomain(colorScheme)
          : [],
        expanded_slices: data.metadata?.expanded_slices || {},
        label_colors: customLabelsColor,
        shared_label_colors: getFreshSharedLabels(sharedLabelsColor),
        map_label_colors: getFreshLabelsColorMapEntries(customLabelsColor),
        refresh_frequency: data.metadata?.refresh_frequency || 0,
        timed_refresh_immune_slices:
          data.metadata?.timed_refresh_immune_slices || [],
        // cross-filters should be enabled by default
        cross_filters_enabled: isCrossFiltersEnabled(
          metadataCrossFiltersEnabled,
        ),
      },
    };

    const handleChartConfiguration = () => {
      const {
        dashboardLayout,
        charts,

Review comment (suggestion):
Is there any chance `tags` could be undefined here? If so, you could add `ensureIsArray(tags || [])`

Code after:
      slug,
      tags,
    } = data;

    const hasId = item => item.id !== undefined;
    const metadataCrossFiltersEnabled = data.metadata?.cross_filters_enabled;
    const colorScheme = data.metadata?.color_scheme;
    const customLabelsColor = data.metadata?.label_colors || {};
    const sharedLabelsColor = enforceSharedLabelsColorsArray(
      data.metadata?.shared_label_colors,
    );
    const cleanedData = {
      ...data,
      certified_by: certified_by || '',
      certification_details:
        certified_by && certification_details ? certification_details : '',
      css: css || '',
      dashboard_title: dashboard_title || t('[ untitled dashboard ]'),
      owners: ensureIsArray(owners).map(o => (hasId(o) ? o.id : o)),
      roles: !isFeatureEnabled(FeatureFlag.DashboardRbac)
        ? undefined
        : ensureIsArray(roles).map(r => (hasId(r) ? r.id : r)),
      slug: slug || null,
      tags: !isFeatureEnabled(FeatureFlag.TaggingSystem)
        ? undefined
        : ensureIsArray(tags || []).map(r => (hasId(r) ? r.id : r)),
      metadata: {
        ...data.metadata,
        color_namespace: getColorNamespace(data.metadata?.color_namespace),
        color_scheme: colorScheme || '',
        color_scheme_domain: colorScheme
          ? getColorSchemeDomain(colorScheme)
          : [],
        expanded_slices: data.metadata?.expanded_slices || {},
        label_colors: customLabelsColor,
        shared_label_colors: getFreshSharedLabels(sharedLabelsColor),
        map_label_colors: getFreshLabelsColorMapEntries(customLabelsColor),
        refresh_frequency: data.metadata?.refresh_frequency || 0,
        timed_refresh_immune_slices:
          data.metadata?.timed_refresh_immune_slices || [],
        // cross-filters should be enabled by default
        cross_filters_enabled: isCrossFiltersEnabled(
          metadataCrossFiltersEnabled,
        ),
      },
    };

    const handleChartConfiguration = () => {
      const {
        dashboardLayout,
        charts,