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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | 7x 7x 2x 2x | import { scope } from '../../constants' /** * You can subscribe on destroy or update of watcher * ```javascript * const count = new State(0) * const watcher = new Watch(() => { * console.log('count', count.value) * // the order does not matter * onDestroy(() => console.log('destructor')) * }) * // console.log('count', 0) * * count.value++ * // console.log('destructor') * // console.log('count', 1) * * watcher.destroy() * // console.log('destructor') * * watcher.destroy() * count.value++ * // nothing happens * ``` * */ export function onDestroy (destructor: Function) { if (scope.activeWatcher) { scope.activeWatcher.destructors.add(destructor) } } |