Detalhes do pacote

/**

• callbag-filter

*

• Callbag operator that conditionally lets data pass through. Works on either
• pullable or listenable sources. *
• npm install callbag-filter *
• Example: *
• const fromIter = require('callbag-from-iter');
• const iterate = require('callbag-iterate');
• const filter = require('callbag-filter'); *
• const source = filter(x => x % 2)(fromIter([1,2,3,4,5])); *
• iterate(x => console.log(x))(source); // 1
• // 3
• // 5 */

const filter = condition => source => (start, sink) => { if (start !== 0) return; let talkback; source(0, (t, d) => { if (t === 0) { talkback = d; sink(t, d); } else if (t === 1) { if (condition(d)) sink(t, d); else talkback(1); } else sink(t, d); }); };

module.exports = filter;