gvergnaud/ts-pattern v5.3.1

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const symbolA = Symbol('symbol-a');
const symbolB = Symbol('symbol-b');

const obj = { [symbolA]: { [symbolB]: 'foo' } };
    
if (isMatching({ [symbolA]: { [symbolB]: 'bar' } }, obj)) {
   //  👆 Used to return true, now returns false!
   
   //  Since TS-Pattern wasn't reading symbols, this pattern used to be equivalent
   //  to the `{}` pattern that matches any value except null and undefined.
}

import { match, P, NonExhaustiveError }  from 'ts-pattern';

const fn = (input: string | number) => {
  return match(input)
    .with(P.string, () => "string!")
    .with(P.number, () => "number!")
    .exhaustive()
}

try {
  fn(null as string) // 👈 💥 
} catch (e) {
  if (e instanceof NonExhaustiveError) {
    // The input was invalid
  } else {
    // something else happened
  }
}