PR Checklist

• Addresses an existing open issue: fixes Bug: Missing peer dependencies #9224
• That issue was marked as accepting prs
• Steps in Contributing were taken

Overview

typescript is a mandatory peer dependency (peerDepedency of ts-api-utils) and not optional peer dependency (it needs to be removed from peerDepedencyMeta).

Info

• ts-api-utils has typescript as peer dependency:

  // ts-api-utils/package.json
  {
    "peerDependencies": {
      "typescript": ">=4.2.0"
    }
  }

Changes

• @typescript-eslint/typescript-estree uses ts-api-utils dependency that has typescript as peer dependency (see Info)

• @typescript-eslint/utils uses @typescript-eslint/typescript-estree dependency that uses ts-api-utils dependency. It needs typescript peer dependency

• @typescript-eslint/parser uses @typescript-eslint/typescript-estree dependency that uses ts-api-utils dependency. It needs typescript peer dependency

• @typescript-eslint/type-utils uses @typescript-eslint/typescript-estree and @typescript-eslint/utils dependencies that use ts-api-utils dependency. It needs typescript peer dependency

• @typescript-eslint/eslint-plugin uses @typescript-eslint/utils dependency that uses @typescript-eslint/typescript-estree dependency that has typescript as peer dependency

• typescript-eslint uses @typescript-eslint/parser and @typescript-eslint/utils dependencies that uses @typescript-eslint/typescript-estree dependency that has typescript as peer dependency

Issue Reproduction

Case where typescript is omitted by eslint-plugin-solid because @typescript-eslint/utils din't has typescript as mandatory peer dependency.

• yarn init -y
• yarn set version berry
• yarn add -D eslint typescript eslint-plugin-solid
• (optional) yarn explain peer-requirements and see logs

  pcc27b → ✘ eslint-plugin-solid@npm:0.14.4 [3223e] doesn't provide typescript to @typescript-eslint/utils@npm:8.15.0 [e3d25] and 2 other dependencies

• (detailed) yarn explain peer-requirements pcc27b and see logs

  Package eslint-plugin-solid@npm:0.14.4 [3223e] is requested to provide typescript by its descendants
  
  eslint-plugin-solid@npm:0.14.4 [3223e]
  └─ @typescript-eslint/utils@npm:8.15.0 [e3d25] (via *)
     └─ @typescript-eslint/typescript-estree@npm:8.15.0 [0f560] (via *)
        └─ ts-api-utils@npm:1.3.0 [37728] (via >=4.2.0)
  
  ✘ Package eslint-plugin-solid@npm:0.14.4 [3223e] does not provide typescript.