Function watchAll

Similar to watch(value) this method wraps a list of values with a single IWatcher instance and tracks access to properties (sub-properties) of each individual element of the values list.

See

WatchAllResult

Returns

WatchAllResult object that holds the proxies for the values and watcher object that tracks property access and does the comparison.

Example

Here's an example with different objects, but unchanged accessed properties:

import { watchAll } from '@indutny/sneequals';

const values = [{ a: { b: 1 } }, { c: 2 }];
const { proxies, watcher } = watchAll(value);
const derived = watcher.unwrap({ b: proxies[0].a.b, c: proxies[1].c });

// Further access to `proxy` (or its sub-proxies) would throw.
watcher.stop();

// Prints `{ b: 1, c: 2 }`
console.log(derived);

// Prints `false` because the tracked `value.a.b` didn't change.
console.log(watcher.isChanged(values[0], { a: { b: 1 } }));

// Prints `true` because the tracked `value.c` changed.
console.log(watcher.isChanged(values[1], { c: 3 }));