callbag-drop-repeats

Drops consecutive duplicate values. Works on either pullable or listenable sources.
Takes an optional custom predicate function.
If not provided then (a, b) => a === b will be used.

npm install callbag-drop-repeats

Examples

$3

``js
const dropRepeats = require('callbag-drop-repeats');
const { forEach, map, interval, pipe, take } = require('callbag-basics');

pipe(
interval(1000),
take(3),
map(() => 'Always me, but once'),
dropRepeats(),
forEach((x) => {
console.log(x); // 'Always me, but once'
})
);
`

$3

Without a predicate function:

`js
const dropRepeats = require('callbag-drop-repeats');
const { forEach, fromIter, pipe } = require('callbag-basics');

pipe(
fromIter([0, 0, 0, 1]),
dropRepeats(),
forEach((x) => {
console.log(x); // 0
}) // 1
);
`

With a predicate function:

`js
const dropRepeats = require('callbag-drop-repeats');
const { forEach, fromIter, pipe } = require('callbag-basics');

pipe(
fromIter([{ name: 'A' }, { name: 'A' }, { name: 'B' }]),
dropRepeats((prev, curr) => prev.name === curr.name),
forEach((x) => {
console.log(x); // { name: 'A' }
}) // { name: 'B' }
);
``