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@isaacs isaacs commented Dec 12, 2025

Explicitly enable any usage in typescript in:

  • dev-packages, since those are largely integration and E2E tests. (This is done with the addition of a dev-packages/.eslintrc.js file.)
  • packages/*/test/, since those are all tests. (This is done with a rule override added to the root .eslintrc.js file.)
  • Several one-off allowances, generally for vendored types from third party sources, and cases involving method overwriting that TypeScript can't follow. (These are done with file/line overrides, explicit as casting, and adding type inference to the isInstanceOf method.)

In other places (ie, in exported production code paths), replace any with unknown, and upgrade the @typescript/no-explicit-any lint rule to an error.

This silences a lot of eslint warnings that were habitually ignored, and encourages us to not opt out of strict type safety in our exported code.

Closes #18489 (added automatically)

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github-actions bot commented Dec 12, 2025

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario Requests/s % of Baseline Prev. Requests/s Change %
GET Baseline 8,795 - 8,915 -1%
GET With Sentry 1,702 19% 1,709 -0%
GET With Sentry (error only) 5,914 67% 6,117 -3%
POST Baseline 1,165 - 1,215 -4%
POST With Sentry 586 50% 593 -1%
POST With Sentry (error only) 1,026 88% 1,060 -3%
MYSQL Baseline 3,279 - 3,317 -1%
MYSQL With Sentry 442 13% 426 +4%
MYSQL With Sentry (error only) 2,652 81% 2,654 -0%

View base workflow run

@isaacs isaacs force-pushed the isaacschlueter/any-to-unknown branch from 6e630f2 to ab3704a Compare December 12, 2025 17:53
Explicitly enable `any` usage in typescript in:

- `dev-packages`, since those are largely integration and E2E tests.
  (This is done with the addition of a `dev-packages/.eslintrc.js`
  file.)
- `packages/*/test/`, since those are all tests. (This is done with a
  rule override added to the root `.eslintrc.js` file.)
- Several one-off allowances, generally for vendored types from third
  party sources, and cases involving function type extension/overriding
  that TypeScript can't follow. (These are done with file/line
  overrides, explicit `as` casting, and adding type inference to the
  `isInstanceOf` method.)

In other places (ie, in exported production code paths), replace `any`
with `unknown`, and upgrade the `@typescript/no-explicit-any` lint rule
to an error.

This silences a lot of eslint warnings that were habitually ignored, and
encourages us to not opt out of strict type safety in our exported code.
@isaacs isaacs force-pushed the isaacschlueter/any-to-unknown branch from ab3704a to 28f73dd Compare December 12, 2025 18:33
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Thanks a lot for taking this on! Let's find a solution for the subtle breakage (see comments) but otherwise I think this is a really nice improvement and hopefully prevents us from using any without good reason in the future.

// Based on Kamil Ogórek's work on:
// https://github.com/supabase-community/sentry-integration-js

/* eslint-disable @typescript-eslint/no-explicit-any */
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l: Should we think about splitting this file up into type definitons and our functionality? My thinking is for type definitions the file-wide explicit any disabling makes sense but it could let stuff slip through in the functions we export. WDYT?

(feel free to disregad, there might be a good reason I'm missing to disable it also for the exported functions)

*/
export interface ExtendedError extends Error {
[key: string]: any;
[key: string]: unknown;
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m: This type is publicly exported. I think this is a (subtle) breaking change, right?

Update: I found a few more changes below with the same issue. I think in most cases the affected types are only supposed to be used on objects users would pass to the SDK (in which case, it's on us to do more through checking). But nothing holds them back from also working with said objects in which case TS could break their builds after updating. I'm leaning towards avoiding this kind of subtle breakage (but definitely fixing it in v11) but also happy to be convinced otherwise :D

WDYT?

*/
export interface ExtractedNodeRequestData {
[key: string]: any;
[key: string]: unknown;
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m: this is also exported, so same question as above

*/
export interface CustomSamplingContext {
[key: string]: any;
[key: string]: unknown;
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m: this is also exported, so same question as above

showEmail={options.showEmail || options.isEmailRequired}
defaultName={(userKey && user?.[userKey.name]) || ''}
defaultEmail={(userKey && user?.[userKey.email]) || ''}
defaultName={String((userKey && user?.[userKey.name]) || '')}
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I guess this comes from the type change in User. Wondering if this would also apply to anyone outside of our SDK code. See comment above

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chore(lint): prefer 'unknown' to 'any', fix lint warnings

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