Examples

Persistent tree

Open the browser example.

Edit a tree and compare the previous and current versions. Rust copies only the path to the edited node; the rest of the tree is shared between versions. Matching object labels and highlighted nodes show that sharing.

Only these two versions are retained. Each edit releases the oldest version; the page uses weak references to show when nodes no longer referenced by either version are actually collected by the browser.

See the source and local run commands.

Shared palette

Open the browser example.

Three GC color objects are shared by 6,144 cells. Editing a color updates every cell that references the same object. The browser and terminal versions use the same Rust implementation.

Run the terminal version from a repository checkout:

node examples/palette/run.mjs

Breakout

A terminal game with a ball, paddle, and bricks stored in GC objects and arrays. Move the paddle with the arrow keys or A/D.

node examples/breakout/run.mjs

See the source. Both terminal commands build and postprocess the Wasm module automatically.