Typescript errors in History.ts

[hasnul]

When I tried to compile the repo, I got the following error messages:

> tsc

src/History.ts:441:9 - error TS18048: 'from' is possibly 'undefined'.

441     if (from.type !== KING || from.color !== chess.turn()) {
            ~~~~

src/History.ts:441:31 - error TS18048: 'from' is possibly 'undefined'.

441     if (from.type !== KING || from.color !== chess.turn()) {
                                  ~~~~

src/History.ts:446:12 - error TS18048: 'to' is possibly 'undefined'.

446     return to.type === KING && to.color !== chess.turn();
               ~~

src/History.ts:446:32 - error TS18048: 'to' is possibly 'undefined'.

446     return to.type === KING && to.color !== chess.turn();
                                   ~~

src/History.ts:484:21 - error TS2740: Type '{ color: Color; from: Square; to: Square; piece: "k"; flags: string; san: string; lan: string; before: string; after: string; }' is missing the following properties from type 'Move': isCapture, isPromotion, isEnPassant, isKingsideCastle, and 2 more.

484                     return {
                        ~~~~~~

Found 5 errors in the same file, starting at: src/History.ts:441

> tsc --version
Version 5.7.3

[hasnul]

Looks like the first four errors are caused by a change in the signature of the get method in the Chess class that happened in version 1.0.0-beta.9 of the chess.js library. In the same version, Move was converted into a class when in previous versions it was a type. This caused the last error.

As a workaround, I set the dependency to exactly 1.0.0-beta.7

[hasnul]

All tests passed except performance.test.ts:

 FAIL  src/__tests__/Performance.test.ts
  ● Parsing Performance › should read massive PGN

    expect(received).toBeLessThanOrEqual(expected)

    Expected: <= 500
    Received:    792

      31 |         });
      32 |
    > 33 |         expect(end - start).toBeLessThanOrEqual(500);
         |                             ^
      34 |     });
      35 | });
      36 |

      at Object.<anonymous> (src/__tests__/Performance.test.ts:33:29)

Test Suites: 1 failed, 3 passed, 4 total
Tests:       1 failed, 110 passed, 111 total
Snapshots:   0 total
Time:        2.847 s, estimated 4 s