## Summary

Per TypeScript spec, when `extends` is an array, later configurations
override earlier ones. typescript-go implements this by accumulating
into a result that each base overwrites in turn (`applyExtendedConfig` →
`mergeCompilerOptions`).

oxc-resolver's `extend_tsconfig` only fills `None` fields, so iterating
forward made the first base set a value, blocking later bases from
overriding it — **first-wins** instead of later-wins.

**Fix:** iterate `extended_tsconfig_paths` in reverse in both extend
sites (`load_tsconfig` and the project-references `extend_tsconfig`).
The last base now sets fields first; earlier bases see them set and
skip; the child's own explicit fields (set before any extend) still win
because they're populated before either loop runs.

Removes the `#[ignore]` on `tsconfig_lookup::extends_array_last_wins`
(added in #1155) which now passes. The existing `extends-multiple` test
still passes because it resolves via `baseUrl` fall-through, not via the
order of inherited `paths`.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

## 🤖 New release

* `oxc_resolver`: 11.19.1 -> 11.19.2
* `oxc_resolver_napi`: 11.19.1 -> 11.19.2

<details><summary><i><b>Changelog</b></i></summary><p>

## `oxc_resolver`

<blockquote>

##
[11.19.2](v11.19.1...v11.19.2)
- 2026-05-25

### <!-- 1 -->🐛 Bug Fixes

- *(tsconfig)* apply later-wins semantics for extends array
([#1156](#1156)) (by
@Boshen)
- *(tsconfig)* walk past a tsconfig that doesn't claim the file
([#1154](#1154)) (by
@Boshen)
- *(tsconfig)* let project references take priority over their parent
([#1151](#1151)) (by
@Boshen)
- *(tsconfig)* resolve `rootDirs` against the config that declared them
([#1150](#1150)) (by
@Boshen)
- *(tsconfig)* resolve `baseUrl` / `paths` against the canonical
tsconfig path
([#1148](#1148)) (by
@Boshen)
- strip query fragments when calling `find_tsconfig`
([#1147](#1147)) (by
@Boshen)
- avoid panic in resolve_file for parentless paths
([#1053](#1053)) (by
@Boshen)
- *(dts)* strip ./ prefix from package entry when matching typesVersions
([#1051](#1051)) (by
@Boshen)
- *(dts)* expand Declaration to TypeScript|Declaration for package entry
resolution
([#1050](#1050)) (by
@Boshen)
- *(dts)* prefer declaration extensions over JS in exports-resolved
paths ([#1047](#1047))
(by @Boshen)
- avoid wasm/wasi dead-code lint in NodePath
([#1043](#1043)) (by
@Boshen)
- *(napi)* replace panics with error returns to prevent WASM traps
([#1055](#1055)) (by
@Boshen)

### <!-- 2 -->🚜 Refactor

- remove clear_cache test that dynamically creates fixtures (by @Boshen)
- move resolve and misc fixtures into fixtures/integration (by @Boshen)
- replace ignored doctest with link to example (by @Boshen)
- consolidate fixture directories for better test file mapping (by
@Boshen)
- replace `url` crate with `percent-encoding`
([#1065](#1065)) (by
@Boshen)

### <!-- 4 -->⚡ Performance

- *(cache)* pack CachedPathImpl::meta into a CachedMeta byte
([#1144](#1144)) (by
@Boshen)
- *(cache)* store canonical path as Box<Path> instead of PathBuf
([#1143](#1143)) (by
@Boshen)
- *(alias)* fast-reject alias entries by cached first byte
([#1142](#1142)) (by
@Boshen)

### <!-- 6 -->🧪 Testing

- *(tsconfig)* port lookup scenarios from typescript-go
([#1155](#1155)) (by
@Boshen)
- add 28 tests to improve coverage (92% → 93%)
([#1082](#1082)) (by
@Boshen)

### Contributors

* @Boshen
* @renovate[bot]
</blockquote>



</p></details>

---
This PR was generated with
[release-plz](https://github.com/release-plz/release-plz/).

Co-authored-by: oxc-guard[bot] <276638029+oxc-guard[bot]@users.noreply.github.com>