fsIntegration crashes in native ESM when patching the read-only fs namespace #25950

Environment

• @sentry/node 11.10.0
• Node.js 24.22.1, Linux x64
• Native ESM, no bundler

Minimal reproduction

import { fsIntegration } from '@sentry/node';
fsIntegration().setupOnce?.();

Run with node --input-type=module (or save as .mjs). The same failure occurs when registering fsIntegration() through Sentry.init().

Actual behavior

The process throws asynchronously:

TypeError: Cannot assign to read only property 'accessSync' of object '[object Module]'

The stack points to _patchMethod in build/esm/integrations/fs/vendored/instrumentation.js.

Expected behavior

Filesystem instrumentation initializes in native ESM without crashing.

Cause and workaround

The ESM implementation imports * as fs from 'fs' and then assigns wrappers to that read-only module namespace. Loading the integration from the public CommonJS build with createRequire() works. Using the mutable default fs export fixes the crash; calling syncBuiltinESMExports() afterward also refreshes named ESM bindings.