[RClaudiuM]

Fixes #453

What

readConfigFile merged the extended tsconfig files in the flattened order of extendedSourceFiles and never overwrote an option that was already set. For a chain of extends, that order puts the nearest file first, so the precedence was right. For an extends array it let the earliest entry win, while TypeScript lets the latest entry win for compilerOptions.

Now the inherited options are resolved per extends entry. A later entry, together with the files it extends in turn, takes precedence over an earlier one. The file's own cmkOptions still win over everything it extends. Diagnostics are collected the same way as before.

extendedSourceFiles only gives the flattened list, so the direct entries are recovered by skipping the files each entry extends in turn. There is one case this can't tell apart: an entry that also appears earlier in the list because an earlier entry extends it ("extends": ["./a.json", "./c.json"] where a.json extends c.json). That case keeps the old precedence.

Tests

Two tests added to packages/core/src/config.test.ts:

• prefers a later entry of an `extends` array over an earlier one: the example from the issue (dtsOutDir is now generated2, same source as compilerOptions.module)
• prefers the tsconfig extended by a later entry of an `extends` array over an earlier entry

Before the fix, both tests fail (dtsOutDir resolves to generated1). After the fix:

• vp test: 43 files, 502 passed
• vp check: passes
• vp run build: passes

I did not run vp run vscode-test locally.

[changeset-bot]

🦋 Changeset detected

Latest commit: e4122a3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

Name	Type
@css-modules-kit/core	Patch
@css-modules-kit/ts-plugin	Patch
@css-modules-kit/codegen	Patch
@css-modules-kit/content-mapper	Patch
@css-modules-kit/core-strada	Patch
@css-modules-kit/eslint-plugin	Patch
@css-modules-kit/stylelint-plugin	Patch
css-modules-kit-vscode	Patch

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