Test wasm/main.go

Remove error checking, since the inputs are hard-coded and the outputs
expected. Then just call `main()` in a test. Basic coverage to ensure it
compiles and runs.

While at it, ignore the `pub` directory created by the playground
branch.

.gitignore

@@ -25,6 +25,7 @@ go.work
 
 # Build artifacts
 _build/
+pub/
 
 # OS Stuff
 .DS_Store

internal/wasm/wasm.go

@@ -4,26 +4,21 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"log"
 
 	"github.com/theory/jsonpath"
 )
 
 func main() {
 	// Parse a jsonpath query.
-	p, err := jsonpath.Parse(`$.foo`)
-	if err != nil {
-		log.Fatal(err)
-	}
+	p, _ := jsonpath.Parse(`$.foo`)
 
 	// Select values from unmarshaled JSON input.
 	result := p.Select([]byte(`{"foo": "bar"}`))
 
 	// Show the result.
-	items, err := json.Marshal(result)
-	if err != nil {
-		log.Fatal(err)
-	}
+	//nolint:errchkjson
+	items, _ := json.Marshal(result)
+
 	//nolint:forbidigo
 	fmt.Printf("%s\n", items)
 }

internal/wasm/wasm_test.go

@@ -0,0 +1,10 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestMain(t *testing.T) {
+	t.Parallel()
+	main()
+}