Add script to run parser on file

package.json

@@ -17,6 +17,7 @@
   },
   "scripts": {
     "install": "bash -c '(cd tree-sitter-spicy && tree-sitter generate && TREE_SITTER_LIBDIR=../lib tree-sitter test >/dev/null)'",
-    "test": "sg test"
+    "test": "sg test",
+    "parse": "node parse.js"
   }
 }

parse.js

@@ -0,0 +1,22 @@
+const path = require("node:path");
+const { spawn } = require("child_process");
+
+if (process.argv.length === 2) {
+  console.error("Expected at least one argument!");
+  process.exit(1);
+}
+
+// Since we will cd into the tree-sitter parser directory make the passed path absolute.
+const file = path.resolve(process.argv[2]);
+process.chdir("./tree-sitter-spicy");
+
+const parse = spawn("tree-sitter", ["parse", file]);
+parse.stdout.on("data", (data) => {
+  console.log(`${data}`);
+});
+parse.stderr.on("data", (data) => {
+  console.log(`stderr: ${data}`);
+});
+parse.on("error", (error) => {
+  console.log(`error: ${error.message}`);
+});