rxjs 5 (before pipe) #angular #typescript

rxjs_5_before_pipe.ts

import 'rxjs/add/operator/map';
import 'rxjs/add/operator/debounceTime'; 
import 'rxjs/add/operator/distinctUntilChanged'; 
//import …

this.$someSubject 
    .do(console.log)
    .debounceTime(800) 
    .map(value => parseFloat(value)) 
    .filter(value => !isNaN(value))
    .subscribe(result => {
        // …
    }) ;