wasm-opt GitHub action

This docker action allows usage of binaryen's wasm-opt to optimise Wasm files inside your GitHub workflows. Binaryen is available under its Apache 2.0 License.

Currently, this action uses Binaryen version 116

Usage

In one of your GitHub workflow steps:

      - name: Optimize Wasm
        uses: NiklasEi/wasm-opt-action@v2
        with:
          file: some/path/to/file.wasm
          output: some/path/to/file.wasm

The parameter file is required and supports Unix shell like patterns. By default, only the first match is optimized. If you would like to optimize all files matching the pattern, set optimize_all to true.

The parameter output is optional and defaults to the original file path. This is very useful if you pass a glob as file.

For example, if your wasm files get a hash attached to them at build time, you can optimize all of them like this:

      - name: Optimize Wasm
        uses: NiklasEi/wasm-opt-action@v2
        with:
          file: dist/*.wasm
          optimize_all: true

This will replace your wasm files with the optimized ones.

There is another optional parameter options with a default value of -Os.

The input parameters are passed to wasm-opt like so: <input> -o <output> <options>.

Take a look at the wasm-opt options for more info.