February 2026 monthly summary for datalens-ui focusing on business value and technical achievements. Delivered foundational charting enhancements, expanded visualization capabilities, and reliability improvements while incorporating modern dependencies and a scalable architecture. Highlights include chroma-js and ml-regression-polynomial integration with chroma-js moved to dependencies, introduction of Chart Modeling Core (store, keysets, settings) with dynamic loading, and the addition of funnel chart visualization. UI and test stability improvements covered critical fixes for gravity charts tests, Inspector-related issues, combined chart legends, and Y-axis titles. Kept dependencies up-to-date with ChartKit upgrades (7.37.3→7.37.4, 7.37.5→7.37.6, 7.37.6→7.37.7) and expanded test coverage for color palettes. Overall, these efforts improved chart accuracy and reliability, broadened visualization options, and strengthened the foundation for scalable, data-driven dashboards, translating into faster time-to-value for end users and more maintainable code.

January 2026 — Focused on stabilizing and enhancing the datalens-ui charting experience, delivering a set of rendering fixes, library upgrades, and new capabilities that improve reliability, performance, and developer/analyst productivity. Outcomes include more accurate and consistent visuals, reliable exports, and broader charting support, setting a solid foundation for upcoming analytics features.

December 2025: Delivered stability, performance, and UX enhancements for datalens-ui charting. Implemented key features around axis scaling, chart activity improvements, and palette handling; resolved critical rendering and concurrency issues; upgraded the core chart toolkit to latest GravityUI versions; strengthened reliability through utils refactor and validator improvements; and refined end-to-end tests to align with GravityCharts changes.

November 2025 (datalens-ui): Focused on stability, configurability, and visual accuracy across charting and wizard subsystems. Delivered axis rotation, combined chart with Y2 axis support, and enhanced chart recipe/config flows; fixed a broad set of bar-y, map, and UI rendering issues. Upgraded dependencies (ChartKit) to improve rendering performance and compatibility and introduced targeted refactors for maintainability. Business value: more reliable visual dashboards, faster configuration, and clearer data storytelling with reduced support overhead.

October 2025 (Month: 2025-10) – Datalens UI (datalens-tech/datalens-ui) delivered significant improvements to charting capabilities, data binding reliability, and UX, while stabilizing core rendering with up-to-date dependencies. The team focused on upgrading the charting library, enhancing axis labeling configuration, and simplifying configuration by removing legacy feature flags, all while addressing a broad set of UI/UX and data rendering bugs to reduce risk in production dashboards.

September 2025 monthly summary for datalens-ui focusing on tenant-aware theming, robust chart rendering, and data reliability. Delivered tenant color palette management with system palettes, enhanced chart legends and color rendering, fixed data inspector and wizard display issues, and completed maintenance with QA tagging and library upgrades. These efforts improved cross-tenant theming consistency, visualization expressiveness, and data-query robustness, while upgrading dependencies to support formatting persistence across datasets.

August 2025 focused on delivering business-value through chartkit upgrades, richer visualization features, and stability fixes across the Datalens UI. The team advanced chart capabilities and theming, tightened end-to-end reliability, and enabled safer feature rollouts for GravityCharts. Key features delivered and upgrades: - Upgraded @gravity-ui/chartkit across multiple versions (7.3.0, then 7.5.x → 7.7.0) to improve rendering, consistency, and chart capabilities - Treemap: introduced sorting and HTML labels; Pie: HTML tooltips for richer in-chart storytelling - Dataset and theming enhancements: Dataset FieldSettings dialog, NewDefaultPalette configuration, and Tenant default palette; DefaultPaletteSelect improvements - New charting capabilities and flags: GravityChartsForBarYAndScatter feature flag; mobile tooltip support for GravityCharts Major bugs fixed: - Revert fix categories on the combined chart and related stability fixes in the gallery - Fixes for tooltips (dl-tooltip, advanced tooltip, PlaceholderAction tooltip) and elastic UI behaviors (dropdown offset in public gallery, scrolling in CollectionsStructure dialog) - E2E stability and data-conversion fixes (Fix e2e for GravityCharts, Fix gravity-chart conversion from wizard, Check plugin when selecting chart prepare function) - Various reliability fixes (nullMode with single value, breadcrumbs, map legend display, double escaping in dataLabels) Overall impact and accomplishments: - The improvements reduce time-to-value for users building dashboards, with more reliable charts, richer visualization options, and smoother theming and dataset customization. The upgrades also lower maintenance costs by consolidating chartkit dependencies and stabilizing core flows like wizard-based conversions and gallery interactions. Technologies/skills demonstrated: - JavaScript/TypeScript, React UI, and integration with Gravity UI chartkit and charts libraries - End-to-end testing and QA with e2e fixes; feature flagging for controlled rollouts; responsive/mobile UX enhancements - Theming, palette management, and dataset customization; robust data-label and tooltip rendering

July 2025 monthly summary for datalens-ui. Focused on delivering scalable UI/chart enhancements, stabilizing the user experience, and reducing maintenance overhead. Major work spanned feature delivery, critical UI/UX fixes, and performance improvements across the UI layer and chart rendering.

June 2025 monthly summary for gravity-ui/uikit focusing on delivering stability improvements in UI components and reinforcing React 17 compatibility. Highlights include a critical bug fix for Breadcrumbs collapse stability that enhances visual consistency and reduces display glitches across layouts. This work improves UX, reduces support costs related to breadcrumbs, and strengthens the component's reliability in production.

May 2025: Delivered a set of user-focused features for datalens-ui, stabilized core visuals, and expanded customization capabilities, driving clearer data insights and faster onboarding. Key contributions include a configurable comment feed for CombinedChart, a Gallery Store and gallery UI overhaul, and enhanced parameter handling for wizard and advanced charts, along with markdown rendering and improved filtering UX.

April 2025: Datalens UI delivered API consistency improvements, new visualizations, and platform maintenance, strengthening API stability, rendering reliability, and data export fidelity while keeping dependencies current. The month focused on API/UX refinements, expanded visualization capabilities, and robust bug fixes that reduce risk for upcoming features.

In March 2025, the Datalens UI team delivered a focused set of editor and charting improvements that drive usability, reliability, and security while strengthening testing readiness and platform compatibility. The work reduces onboarding friction for new users, mitigates editor-related risk, and provides a solid foundation for future charting features.

February 2025 monthly summary for datalens-ui: Delivered a set of UX improvements, stability fixes, and configurability enhancements that improve data storytelling, dashboard reliability, and embeddable widget orchestration. Focused on chart rendering, table rendering, and extensibility to support faster iteration and safer production deployments.

January 2025 — Focused on UI stabilization, interactive data visualization improvements, and safer feature rollouts for datalens-ui. Delivered key user-facing features that enhance data exploration and readability, and implemented config-driven workflow improvements. Key features delivered include interactive chart enhancements and workflow refinements that reduce friction for editors and analysts. Major bugs fixed span HTML rendering and markup across wizard/chart components, null handling for empty strings in linear graphs, palette switching color list correctness, pivot table out-of-range coloring, legend formatter rendering, URL schema validation, gradient coloring by MeasureValues, and parameter-change responsiveness for bar charts. Impact: improved data readability and trust, faster time-to-insight, and safer feature releases through feature flags and config-driven workbooks. Technologies/skills demonstrated include React/UI engineering, gravity-charts (renamed from d3), advanced HTML rendering fixes, feature flags, and config-driven workflows.

December 2024 performance summary for datalens-ui: Delivered a cohesive set of UI and charting improvements across the UI Sandbox, Pie charts, and HTML rendering, with targeted fixes to data correctness, interactivity, and developer ergonomics. Key initiatives included robust sandbox error handling and timeout hardening, the navigation refactor from 'navigate' to 'editor', and activation of Blank Chart interactivity/state management; improved data prep and tooltip rendering for Pie charts; HTML content rendering in wizard fields with expanded allowed HTML attributes; updated ChartKit dependencies to latest 5.19.x releases; and reinforced data quality and UX through enhanced null handling in pivot tables, stable sorting, and axis normalization controls. These changes reduce runtime errors, improve data fidelity, and empower faster feature delivery.

November 2024 (2024-11) monthly summary for datalens-ui: Delivered stability, performance, and UX improvements across the UI visualization stack. Focused on table rendering reliability, chart correctness, and API enhancements to support scalable dashboards. End-to-end changes reduced visual glitches, improved rendering performance for large datasets, and provided developers with clearer, more flexible tooling for building dashboards.