feat: supports functions in bash/js/python/ruby (#6)

cmd/cmd.js

@@ -0,0 +1,36 @@
+#!/usr/bin/env node
+
+function loadModule() {
+  const path = require("path");
+  let func_name = process.argv[1];
+  if (func_name.endsWith("cmd.js")) {
+    func_name = process.argv[2]
+  } else {
+    func_name = path.basename(func_name)
+  }
+  if (!func_name.endsWith(".js")) {
+    func_name += '.js'
+  }
+  const func_path = path.resolve(__dirname, `../js/${func_name}`)
+  try {
+    return require(func_path);
+  } catch {
+    console.log(`Invalid js function: ${func_name}`)
+    process.exit(1)
+  }
+}
+
+if (process.env["LLM_FUNCTION_DECLARATE"]) {
+  const { declarate } = loadModule();
+  console.log(JSON.stringify(declarate(), null, 2))
+} else {
+  let data = null;
+  try {
+    data = JSON.parse(process.env["LLM_FUNCTION_DATA"])
+  } catch {
+    console.log("Invalid LLM_FUNCTION_DATA")
+    process.exit(1)
+  }
+  const { execute } = loadModule();
+  execute(data)
+}