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Konami RxJS 7
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const table: {[key: string]: number} = { | |
ArrowUp: 38, | |
ArrowDown: 40, | |
ArrowLeft: 37, | |
ArrowRight: 39, | |
KeyB: 66, | |
// Azerty compat | |
KeyQ: 65, | |
KeyA: 65, | |
}; | |
const knownSequence = from([38, 38, 40, 40, 37, 39, 37, 39, 66, 65]); | |
const x$ = fromEvent<KeyboardEvent>(document, 'keyup').pipe( | |
map((e) => table[e.code] ? table[e.code] : -1), | |
skipWhile((k) => k !== 38), | |
bufferCount(10, 1), | |
mergeMap((x) => { | |
return from(x).pipe(sequenceEqual(knownSequence)); | |
}), | |
filter((sequenceEqual) => sequenceEqual), | |
switchMap((_) => of('konami')) | |
); | |
await firstValueFrom(x$); | |
// Do x thing |
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