`react-doctor/no-impure-call-at-module-scope`

Nondeterministic built-in at module scope

Category: Bugs
Severity: warn
Source: oxlint-plugin-react-doctor
Framework: global
Enabled when: ssr
Tags: test-noise
Default: Enabled

Validate the diagnostic

Confirm the reported code matches this rule before you edit it.

Confirm the reported code matches react-doctor/no-impure-call-at-module-scope. Compare it with the Before example and verify the same API, framework, and execution context. Treat it as a false positive only when one of those conditions differs.

Compare the code

The corrected pattern shows a focused way to address the diagnostic.

Reported pattern

const requestStartedAt = Date.now();

export const buildResult = () => ({
  requestStartedAt,
});

Corrected pattern

export const buildResult = () => ({
  requestStartedAt: Date.now(),
});

How to fix

Use the corrected pattern as a reference. Preserve behavior that the rule does not require you to change.

Copyable fix prompt

Copy this self-contained prompt into your coding agent after you confirm the diagnostic.

Fix every confirmed react-doctor/no-impure-call-at-module-scope diagnostic in the current repository. Required change: - Math.random(), Date.now(), performance.now(), and new Date() run once at module load, so the value is frozen for the whole server process. Move the call into a function/component so it evaluates per request.

Reference transformation:Before:

const requestStartedAt = Date.now();

export const buildResult = () => ({
  requestStartedAt,
});

After:

export const buildResult = () => ({
  requestStartedAt: Date.now(),
});

Constraints: - Confirm the reported code matches the Before pattern. - Make the smallest change that fixes the root cause. - Preserve behavior and interfaces unrelated to this diagnostic. - Reuse existing project components, utilities, and conventions. - Do not introduce render-phase side effects, render-phase state updates, or Hooks rule violations. - Adapt identifiers and framework details instead of copying blindly. - Do not disable the rule or suppress matching code. - Confirm this rule is enabled for the project: ssr. Verification: - Run focused tests for the changed behavior. - Run React Doctor and confirm this diagnostic no longer appears. - Report the files changed and any checks you could not run.

More Bugs rules from the rules reference:

react-doctor/no-impure-state-updater: State updater has side effects
react-doctor/no-indeterminate-attribute: Indeterminate checkbox state set as an attribute
react-doctor/no-inert-sticky-position: Sticky positioning has no inset
react-doctor/no-initialize-state: Disallow initializing state in an effect.
react-doctor/no-is-mounted: Disallow the removed legacy isMounted() API — cancel async work instead of guarding setState.

react-doctor/no-impure-call-at-module-scope