{ cmd }:

rec {
  # Build commands (dev mode)
  build = { wasm-pack, path ? "." }:
    {
      "wasm:build:web" = cmd "Build Wasm for web target" ''
        ${wasm-pack} build ${path} --dev --target=web "$@"
      '';

      "wasm:build:nodejs" = cmd "Build Wasm for Node.js target" ''
        ${wasm-pack} build ${path} --dev --target=nodejs "$@"
      '';

      "wasm:build:bundler" = cmd "Build Wasm for bundler target" ''
        ${wasm-pack} build ${path} --dev --target=bundler "$@"
      '';
    };

  # Release commands
  release = { wasm-pack, path ? ".", gzip ? null }:
    let
      compress = if gzip != null then " && ${gzip} -f ${path}/pkg/*_bg.wasm" else "";
    in {
      "wasm:release:web" = cmd "Build Wasm release for web target" ''
        ${wasm-pack} build ${path} --release --target=web "$@"${compress}
      '';

      "wasm:release:nodejs" = cmd "Build Wasm release for Node.js target" ''
        ${wasm-pack} build ${path} --release --target=nodejs "$@"${compress}
      '';

      "wasm:release:bundler" = cmd "Build Wasm release for bundler target" ''
        ${wasm-pack} build ${path} --release --target=bundler "$@"${compress}
      '';
    };

  # Test commands
  test = { wasm-pack, path ? ".", features ? null }:
    let
      featuresFlag = if features != null then " --features='${features}'" else "";
    in {
      "wasm:test:node" = cmd "Run wasm-pack tests in Node.js" ''
        ${wasm-pack} test --node ${path}${featuresFlag} "$@"
      '';

      "wasm:test:chrome" = cmd "Run wasm-pack tests in headless Chrome" ''
        ${wasm-pack} test --headless --chrome ${path}${featuresFlag} "$@"
      '';

      "wasm:test:firefox" = cmd "Run wasm-pack tests in headless Firefox" ''
        ${wasm-pack} test --headless --firefox ${path}${featuresFlag} "$@"
      '';

      "wasm:test:safari" = cmd "Run wasm-pack tests in headless Safari" ''
        ${wasm-pack} test --headless --safari ${path}${featuresFlag} "$@"
      '';
    };

  # Documentation commands
  doc = { cargo, xdg-open ? null }:
    {
      "wasm:doc" = cmd "Build docs for wasm32-unknown-unknown" ''
        ${cargo} doc --target=wasm32-unknown-unknown "$@"
      '';
    } // (if xdg-open != null then {
      "wasm:doc:open" = cmd "Build and open Wasm docs" ''
        ${cargo} doc --target=wasm32-unknown-unknown --open "$@"
      '';
    } else {});

  # Watch commands
  watch = { cargo-watch }:
    {
      "wasm:watch:build" = cmd "Rebuild Wasm on changes" ''
        ${cargo-watch} --clear -- cargo build --target=wasm32-unknown-unknown
      '';

      "wasm:watch:test" = cmd "Run Wasm tests on changes" ''
        ${cargo-watch} --clear -x "test --target=wasm32-unknown-unknown"
      '';
    };

  # CI workflow
  ci = { wasm-pack, path ? ".", features ? null }:
    let
      featuresFlag = if features != null then " --features='${features}'" else "";
    in {
      "wasm:ci" = cmd "Run Wasm CI suite (test node + chrome)" ''
        set -e
        echo "Running wasm-pack tests in Node.js..."
        ${wasm-pack} test --node ${path}${featuresFlag}
        echo "Running wasm-pack tests in Chrome..."
        ${wasm-pack} test --headless --chrome ${path}${featuresFlag}
        echo "Wasm CI passed!"
      '';
    };

  # Convenience: all wasm commands
  all = { wasm-pack, cargo, path ? ".", gzip ? null, features ? null, cargo-watch ? null, xdg-open ? null }:
    build { inherit wasm-pack path; }
    // release { inherit wasm-pack path gzip; }
    // test { inherit wasm-pack path features; }
    // doc { inherit cargo xdg-open; }
    // (if cargo-watch != null then watch { inherit cargo-watch; } else {})
    // ci { inherit wasm-pack path features; };
}