objectionary/eo-lsp-server

`lint` target in `Makefile` uses `--ext .ts` flag that was removed in ESLint v9

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#364 opened on Jun 14, 2026

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Description

What happens: The lint target in Makefile runs npx eslint src --ext .ts. The project's package.json specifies "eslint": "^9.0.0", but the --ext CLI option was removed as a breaking change in ESLint v9 (it was replaced by specifying file patterns in the config file). Running make lint therefore fails. The eslint.config.js already specifies files: ["**/*.ts", ...], so the flag is both redundant and unsupported.

What should happen: The lint target should run npx eslint src (without --ext .ts), relying on the files patterns already present in eslint.config.js to select TypeScript files.

Contributor guide

Research direction
Remove the ` ext .ts` flag from the `lint` target in the `Makefile` so it reads `npx eslint src`.
Tech stack
typescript
Domain
build systemdeveloper experience
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
MakeESLint
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90