error TS1294: This syntax is not allowed when 'erasableSyntaxOnly' is enabled

[zhemaituk]

What you were expecting:
Build with "erasableSyntaxOnly": true compiler option completes without errors.

What happened instead:

tsc --build
node_modules/ra-core/src/dataProvider/HttpError.ts:3:9 - error TS1294: This syntax is not allowed when 'erasableSyntaxOnly' is enabled.

3         public readonly message,
          ~~~~~~~~~~~~~~~~~~~~~~~

node_modules/ra-core/src/dataProvider/HttpError.ts:4:9 - error TS1294: This syntax is not allowed when 'erasableSyntaxOnly' is enabled.

4         public readonly status,
          ~~~~~~~~~~~~~~~~~~~~~~

node_modules/ra-core/src/dataProvider/HttpError.ts:5:9 - error TS1294: This syntax is not allowed when 'erasableSyntaxOnly' is enabled.

5         public readonly body: any = null
          ~~~~~~~~~~~~~~~~~~~~~~~~~

Steps to reproduce:

1. Enable erasableSyntaxOnly in tsconfig (or use latest https://www.npmjs.com/package/@tsconfig/vite-react, where it is enabled by detault):

{
  "extends": "@tsconfig/vite-react/tsconfig.json",
  "compilerOptions": {
    "erasableSyntaxOnly": true
  },
  "include": [
    "src"
  ]
}

2. Run tsc --build

Environment

• React-admin version: 5.8.2
• Last version that did not exhibit the issue (if applicable): -
• React version: 19.1.0
• Browser: -
• Stack trace (in case of a JS error): -

[slax57]

Reproduced, thanks!