WLJS 3.0.9 is out 🏝️
Published on July 11, 2026 by Kirill Vasin


Highlights

  • Refreshed UI with lighter colors and improved visual elements.
  • Expanded formatting support for Grid, Row, Column, and TableForm, including alignment, spacing, dividers, sizing, headings, and baseline positioning.
  • Deploy now works with decorated expressions, making complete expression trees non-selectable and non-editable.
  • Panel now supports Background and Appearance options.
  • Added Locator[] for interactive 2D and 3D coordinate manipulation.
  • Improved TextView with multiline support, reduced default styling, and ImageSize.
  • Added frontend support for ToString, NumberForm, StringJoin, and Round, including use with Offload.
  • Improved packed and numeric array serialization using base64-encoded WXF, reducing payload size, memory usage, and CPU overhead.
  • Frontend association symbols now support key access such as a["key"].
  • StandardForm[expr] can be used to render expressions with output-cell formatting inside slides, WLX, and Markdown cells.

Bug Fixes

  • Fixed JIT issues affecting Animate, Refresh, Manipulate, polygon conversion, vertex colors, and unsupported data structures.
  • Fixed the Insert Matrix snippet.
  • Added Transparent support for 2D and 3D graphics.
  • Fixed invisible text selection.
  • Fixed issues with MCP, CLI, CreateWindow, InputTerminal, and UI separators.