test: add test for linting files outside a project

[camc314]

This adds a test to prevent regressions.

While e2e/fixtures/with-unmatched-files/src/index.ts​ is in the project, e2e/fixtures/with-unmatched-files/test.ts​ is not. We are expecting both to have the same diagnostics printed for both.

[camc314]

• test: add test for linting files outside a project #215 : 2 dependent PRs (#182 , #216 ) 👈 (View in Graphite)
• main

---

How to use the Graphite Merge Queue

Add the label 0-merge to this PR to add it to the merge queue.

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has enabled the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[Copilot]

Pull Request Overview

This PR adds a regression test to verify that TSGoLint correctly handles files both inside and outside of a TypeScript project configuration. The test ensures that linting behavior is consistent between files included in tsconfig.json and those that are not.

• Adds a new E2E test case that validates linting of files outside project configuration
• Creates test fixtures with identical TypeScript code in both included and excluded locations
• Verifies that both files produce the same diagnostic output for the no-unsafe-argument rule

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
e2e/snapshot.test.ts	Adds new test case for linting files outside project configuration
e2e/fixtures/with-unmatched-files/tsconfig.json	Creates TypeScript project config that only includes src/**/*
e2e/fixtures/with-unmatched-files/test.ts	Test file outside project configuration with unsafe argument usage
e2e/fixtures/with-unmatched-files/src/index.ts	Test file inside project configuration with identical unsafe argument usage
e2e/snapshots/snapshot.test.ts.snap	Expected snapshot output showing diagnostics for both files

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[graphite-app]

Merge activity

• Sep 8, 7:02 AM UTC: camc314 added this pull request to the Graphite merge queue.
• Sep 8, 7:14 AM UTC: Merged by the Graphite merge queue.