Function getModuleInfo

packages/wasm/src/registry.ts:16–38

(module: WebAssembly.Module)

 * @param module
 */
export function getModuleInfo(module: WebAssembly.Module): ModuleInfo {
  const buildIds = WebAssembly.Module.customSections(module, 'build_id');
  let buildId = null;
  let debugFile = null;

  const buildId0 = buildIds[0];
  if (buildId0) {
    const firstBuildId = new Uint8Array(buildId0);
    buildId = Array.from(firstBuildId).reduce((acc, x) => {
      return acc + x.toString(16).padStart(2, '0');
    }, '');
  }

  const externalDebugInfo = WebAssembly.Module.customSections(module, 'external_debug_info');
  const externalDebugInfo0 = externalDebugInfo[0];
  if (externalDebugInfo0) {
    const firstExternalDebugInfo = new Uint8Array(externalDebugInfo0);
    const decoder = new TextDecoder('utf-8');
    debugFile = decoder.decode(firstExternalDebugInfo);
  }

  return { buildId, debugFile };
}

/**
 * Records a module and returns the created debug image.