Function withEnv

__tests__/glyphs.test.ts:20–39

(patch: Record<string, string | undefined>, fn: () => void)

} from '../src/ui/glyphs';

function withEnv(patch: Record<string, string | undefined>, fn: () => void): void {
  const saved: Record<string, string | undefined> = {};
  const savedPlatform = process.platform;
  for (const key of Object.keys(patch)) {
    saved[key] = process.env[key];
    if (patch[key] === undefined) delete process.env[key];
    else process.env[key] = patch[key];
  }
  _resetGlyphsCache();
  try {
    fn();
  } finally {
    for (const key of Object.keys(saved)) {
      if (saved[key] === undefined) delete process.env[key];
      else process.env[key] = saved[key];
    }
    Object.defineProperty(process, 'platform', { value: savedPlatform });
    _resetGlyphsCache();
  }
}

function setPlatform(value: NodeJS.Platform): void {
  Object.defineProperty(process, 'platform', { value });