feat: add shfmt support for shell script formatting (#3)

* feat: add shfmt support for shell script formatting

Add shfmt as a second WASM plugin alongside the existing gofmt plugin. This
change refactors the build system to support multiple formatters, updates the
release process to handle both plugins, and incorporates the mvdan.cc/sh
parsing and formatting library for shell script support.

Apply formatting

* Apply formatting

* feat: add shfmt support for shell script formatting

Add shfmt as a second WASM plugin alongside the existing gofmt plugin. This
change refactors the build system to support multiple formatters, updates the
release process to handle both plugins, and incorporates the mvdan.cc/sh
parsing and formatting library for shell script support.

Apply formatting

* Apply formatting

---------

Co-authored-by: GitHub Actions <actions@github.com>

Author: mridang

.golangci.yml

@@ -8,16 +8,15 @@
     [
       "@semantic-release/exec",
       {
-        "prepareCmd": "echo '${nextRelease.version}' > VERSION && make build"
+        "prepareCmd": "echo '${nextRelease.version}' > cmd/gofmt/VERSION && echo '${nextRelease.version}' > cmd/shfmt/VERSION && make build"
       }
     ],
     [
       "@semantic-release/github",
       {
         "assets": [
           {
-            "path": "build/dprint.wasm",
-            "label": "dprint.wasm"
+            "path": "build/*.wasm"
           }
         ]
       }
@@ -27,7 +26,8 @@
       {
         "message": "chore(release): ${nextRelease.version} [skip ci]\\n\\n${nextRelease.notes}",
         "assets": [
-          "VERSION"
+          "cmd/gofmt/VERSION",
+          "cmd/shfmt/VERSION"
         ]
       }
     ]

.releaserc.json

@@ -1,22 +1,37 @@
-.PHONY: default build lint test vendor clean format
+.PHONY: default build build-gofmt build-shfmt lint test test-gofmt test-shfmt vendor clean format
 
 export GO111MODULE=on
 
 default: build
 
-build:
+build: build-gofmt build-shfmt
+
+build-gofmt:
+	mkdir -p build
+	tinygo build -o=build/gofmt.wasm -target=wasm-unknown -scheduler=none -no-debug -opt=2 ./cmd/gofmt
+	go run ./cmd/addstart/main.go build/gofmt.wasm build/gofmt-fixed.wasm
+	mv build/gofmt-fixed.wasm build/gofmt.wasm
+
+build-shfmt:
 	mkdir -p build
-	tinygo build -o=build/dprint.wasm -target=wasm-unknown -scheduler=none -no-debug -opt=2 main.go
-	go run ./cmd/addstart/main.go build/dprint.wasm build/dprint-fixed.wasm
-	mv build/dprint-fixed.wasm build/dprint.wasm
+	tinygo build -o=build/shfmt.wasm -target=wasm-unknown -scheduler=none -no-debug -opt=2 ./cmd/shfmt
+	go run ./cmd/addstart/main.go build/shfmt.wasm build/shfmt-fixed.wasm
+	mv build/shfmt-fixed.wasm build/shfmt.wasm
 
 lint:
 	go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
 	golangci-lint run --verbose
 
 # Force module mode and CGO so wasmer-go finds its packaged libs.
-test:
-	GOFLAGS= CGO_ENABLED=1 go test -mod=mod -v=true -cover=true -coverprofile=coverage.out -count=1 ./... && go tool cover -html=coverage.out -o coverage.html
+test: test-gofmt test-shfmt
+
+# Run tests only in gofmt command package
+test-gofmt:
+	GOFLAGS= CGO_ENABLED=1 go test -mod=mod -v=true -cover=true -count=1 ./cmd/gofmt
+
+# Run tests only in shfmt command package
+test-shfmt:
+	GOFLAGS= CGO_ENABLED=1 go test -mod=mod -v=true -cover=true -count=1 ./cmd/shfmt
 
 vendor:
 	go mod vendor

Makefile

@@ -1,24 +1,22 @@
-# dprint-plugin-go
+# dprint-plugin-goat
 
-**dprint-plugin-go** is a formatter plugin for dprint that formats Go
-files using Go’s canonical formatter. It’s compiled to WebAssembly with
-TinyGo and plugs into dprint like any other plugin.
+**dprint-plugin-goat** provides two formatter plugins for dprint: one for Go files using Go's canonical formatter, and one for shell scripts using shfmt. Both are compiled to WebAssembly with TinyGo and plug into dprint like any other plugin.
 
 ##### Why ?
 
-Using a dprint plugin lets you keep a single, consistent formatting
-workflow across polyglot repos. This plugin applies `go/format` so your
-Go code follows the exact same rules as `gofmt`.
+Using dprint plugins lets you keep a single, consistent formatting workflow across polyglot repos. The gofmt plugin applies `go/format` so your Go code follows the exact same rules as `gofmt`, while the shfmt plugin formats shell scripts with the same power as the standalone shfmt tool.
 
 ## Usage
 
-Add the plugin to your **dprint** configuration and format your files.
+### gofmt
+
+Add the gofmt plugin to your **dprint** configuration to format Go files.
 
 ```json
 {
   "$schema": "https://dprint.dev/schemas/v0.json",
   "plugins": [
-    "https://github.com/mridang/dprint-go/releases/download/v1.0.0/dprint.wasm"
+    "https://github.com/mridang/dprint-goat/releases/download/v1.0.0/gofmt.wasm"
   ],
   "includes": [
     "**/*.go"
@@ -33,21 +31,42 @@ Add the plugin to your **dprint** configuration and format your files.
 dprint fmt --log-level=debug
 ```
 
-### Options
+#### Options
+
+This plugin mirrors `gofmt` and does not add custom options. If you pass an override config from dprint, it is accepted but ignored.
+
+### shfmt
+
+Add the shfmt plugin to your **dprint** configuration to format shell scripts.
+
+```json
+{
+  "$schema": "https://dprint.dev/schemas/v0.json",
+  "plugins": [
+    "https://github.com/mridang/dprint-goat/releases/download/v1.0.0/shfmt.wasm"
+  ],
+  "includes": [
+    "**/*.sh"
+  ]
+}
+```
+
+```bash
+dprint fmt --log-level=debug
+```
+
+#### Options
 
-This plugin mirrors `gofmt` and does not add custom options. If you pass
-an override config from dprint, it is accepted but ignored.
+This plugin mirrors `shfmt` and does not add custom options. If you pass an override config from dprint, it is accepted but ignored.
 
 ## Caveats
 
 None.
 
 ## Contributing
 
-Contributions are welcome! If you find a bug or have suggestions for
-improvement, please open an issue or submit a pull request.
+Contributions are welcome! If you find a bug or have suggestions for improvement, please open an issue or submit a pull request.
 
 ## License
 
 Apache License 2.0 © 2025 Mridang Agarwalla
-