SPFx 1.15 - ESLint - version of TypeScript which is not officially supported by @typescript-eslint/typescript-estree

[MarkusLanger]

Target SharePoint environment

SharePoint Online

What SharePoint development model, framework, SDK or API is this about?

💥 SharePoint Framework

Developer environment

macOS

What browser(s) / client(s) have you tested

• 💥 Internet Explorer
• 💥 Microsoft Edge
• 💥 Google Chrome
• 💥 FireFox
• 💥 Safari
• mobile (iOS/iPadOS)
• mobile (Android)
• not applicable
• other (enter in the "Additional environment details" area below)

Additional environment details

• browser version: Version 103.0.5060.53
• SPFx version: 1.15 GA
• Node.js version: 16.15.1
• ESLint version: 8.18.0
• TypeScript version 4.7.4

Describe the bug / error

When I run the eslint command eslint src/* --ext js,ts,tsx I get the following warning:

WARNING: You are currently running a version of TypeScript which is not officially supported by @typescript-eslint/typescript-estree.

You may find that it works just fine, or you may not.

SUPPORTED TYPESCRIPT VERSIONS: >=3.3.1 <4.6.0

YOUR TYPESCRIPT VERSION: 4.7.4

Please only submit bug reports when using the officially supported version.

Steps to reproduce

1. Create a new SPFx Project with version 1.15 GA
2. Install deps with npm install
3. Run ESLint with eslint src/* --ext js,ts,tsx

Expected behavior

I would expect that ESLint runs without warning.

[ghost]

Thank you for reporting this issue. We will be triaging your incoming issue as soon as possible.

[AJIXuMuK]

@MarkusLanger -thanks for reporting this one.
eslint tasks is baked in in the build routing so technically you don't need to call it separately.
And when executed as part of the build routine, it uses TS v 4.5.5.

Although we definitely need to explicitly specify the version of TS in the package.json to avoid installing another version.

[MarkusLanger]

I have been using ESLint in my projects for a long time. That's why I have my own NPM script for it.

Looks like the higher version comes from "@rushstack/eslint-config".

[AJIXuMuK]

1.15.2 is out - this should be fixed

[ghost]

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