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| import { MonoTypeOperatorFunction } from "rxjs"; | |
| import { map, scan } from "rxjs/operators"; | |
| export function debug<T>(): MonoTypeOperatorFunction<T> { | |
| return source => source.pipe( | |
| scan<T, [T, number]>(([, index], t) => [t, index + 1], [undefined!, -1]), | |
| map(([t, index]) => (console.log(`[${index}]: ${t}`), t)) | |
| ); | |
| } |
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