@tanstack/ai-code-mode/dist/esm/strip-typescript.js

Code Mode for TanStack AI - LLM-driven code execution in secure sandboxes

import { transform } from "esbuild";
const WRAPPER_START = "___TANSTACK_WRAPPER_START___";
const WRAPPER_END = "___TANSTACK_WRAPPER_END___";
async function stripTypeScript(code) {
  const wrappedCode = `async function ${WRAPPER_START}() {
${code}
}; ${WRAPPER_END}`;
  const result = await transform(wrappedCode, {
    loader: "ts",
    // Don't minify - keep the code readable for debugging
    minify: false,
    // Don't use keepNames as it adds __name() helper calls that aren't available in the sandbox
    keepNames: false,
    // Target modern JavaScript (ES2022 has top-level await)
    target: "es2022"
  });
  const transformed = result.code;
  const functionStart = transformed.indexOf(`async function ${WRAPPER_START}()`);
  if (functionStart === -1) {
    throw new Error(
      "[stripTypeScript] Could not find wrapper function start in transformed output"
    );
  }
  const openBrace = transformed.indexOf("{", functionStart);
  if (openBrace === -1) {
    throw new Error(
      "[stripTypeScript] Could not find opening brace in transformed output"
    );
  }
  const endMarkerIndex = transformed.indexOf(WRAPPER_END);
  if (endMarkerIndex === -1) {
    throw new Error(
      "[stripTypeScript] Could not find end marker in transformed output"
    );
  }
  const codeBeforeEndMarker = transformed.substring(
    openBrace + 1,
    endMarkerIndex
  );
  const closingBraceIndex = codeBeforeEndMarker.lastIndexOf("}");
  if (closingBraceIndex === -1) {
    throw new Error(
      "[stripTypeScript] Could not find closing brace in transformed output"
    );
  }
  const functionBody = codeBeforeEndMarker.substring(0, closingBraceIndex).trim();
  return functionBody;
}
export {
  stripTypeScript
};
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