[Elvand-Lie]

Explanation

Readers cannot finish either GC example: WABT rejects the GC WAT, and WasmEdge 0.18.1 rejects --invoke. Use wasm-tools to compile the unchanged WAT, then use the documented reactor invocation convention to obtain the existing expected outputs, 99 and 42.

Related issue

Closes #316

Related: #235 (GC documentation request).

What type of PR is this

/kind documentation

Proposed Changes

• Replace the WABT prerequisite with wasm-tools, with a verified Linux x86_64 prebuilt installation and a macOS Homebrew command.
• Link to the wasm-tools installation instructions for other platforms, including Linux aarch64.
• Replace both compile commands with wasm-tools parse.
• Put the module before its exported function and use --reactor in both run commands.
• Preserve the WAT, expected output, installation-guide link, C API section and other wording. No translated gc.md exists under i18n/.

Step	Before	Before result	After	After result
Compile struct	wat2wasm point.wat -o point.wasm	struct not allowed	wasm-tools parse point.wat -o point.wasm	Exit 0
Run struct	wasmedge --invoke make_point point.wasm	unknown option: invoke	wasmedge --reactor point.wasm make_point	Exit 0, 99
Compile array	wat2wasm array.wat -o array.wasm	array type not allowed	wasm-tools parse array.wat -o array.wasm	Exit 0
Run array	wasmedge --invoke array_example array.wasm	unknown option: invoke	wasmedge --reactor array.wasm array_example	Exit 0, 42

Validation

Extracted the WAT and shell commands directly from the edited page and ran all eight Linux commands in order in a fresh ubuntu:24.04 container. WasmEdge 0.18.1 came from the official installer; wasm-tools 1.262.0 came from the documented release tarball. Both compile commands exited 0 and the run commands printed the documented results:

$ wasmedge --reactor point.wasm make_point
99
$ wasmedge --reactor array.wasm array_example
42

The unchanged disable-GC example was run verbatim with your_module.wasm holding a copy of point.wasm; it rejected the GC module as expected. Homebrew's formula API confirms an enabled, non-deprecated wasm-tools formula; the macOS command was not executed on Ubuntu.

The repository's npm run lint:ci passed under Node 16.14.0, but its ESLint and Stylelint file patterns do not cover Markdown.

Assisted by Claude Opus 5.5 and GPT 6.1 sol, reviewed by the author.