TypeScript error due to missing `Performance` type in Node environments (since v15.3)

[mrmonat]

Starting with version 15.3.2, @sinonjs/fake-timers introduces a TypeScript compilation error in Node.js-only environments:

Error: node_modules/@sinonjs/fake-timers/types/fake-timers-src.d.ts(109,19): error TS2304: Cannot find name 'Performance'.

Environment

• @sinonjs/fake-timers: ≥ 15.3.2
• TypeScript: reproducible with recent versions
• Runtime: Node.js (no DOM)

Steps to reproduce

1. Use @sinonjs/fake-timers in a TypeScript project
2. Configure tsconfig.json without DOM types:

{
  "compilerOptions": {
    "lib": ["ES2022"]
  }
}

3. Run the TypeScript compiler

Actual behavior

The compiler fails because Performance is referenced in the type definitions but not available in a Node.js-only type environment.

Expected behavior

The package should compile in a Node.js environment without requiring DOM types.

Workarounds

The issue can currently be worked around by:

• Enabling skipLibCheck:

{
  "compilerOptions": {
    "skipLibCheck": true
  }
}

• Adding "DOM" to lib:

{
  "compilerOptions": {
    "lib": ["ES2022", "DOM"]
  }
}

Why this is a problem

• skipLibCheck disables type checking for all dependencies and may hide real issues.
• Adding "DOM" introduces browser-specific globals into a Node.js project, which is undesirable and semantically incorrect.