Function typescript

packages/backends/src/typescript.ts:32–58

(args: TypescriptOptions)

type TypeScriptModule = typeof import('typescript');

export const typescript = (args: TypescriptOptions) => {
  const { span } = args;
  const tsSpan = span.child('vc.builder.backends.tsCompile');

  return tsSpan.trace(async () => {
    const extension = extname(args.entrypoint);
    const isTypeScript = ['.ts', '.mts', '.cts'].includes(extension);

    if (!isTypeScript) {
      return;
    }

    const ts = resolveTypeScriptModule(args.workPath);
    if (!ts) {
      console.log(
        c.gray(
          `${c.bold(c.cyan('✓'))} Typecheck skipped ${c.gray(
            '(TypeScript not found)'
          )}`
        )
      );
      return null;
    }

    return doTypeCheck(args, ts);
  });
};

async function doTypeCheck(
  args: { entrypoint: string; workPath: string },