@ng-doc/builder/engine/core/triggers/on-dependencies-change.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.onDependenciesChange = onDependenciesChange;
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
const watcher_1 = require("../watcher");
/**
 * Function to trigger an action when any of the provided dependencies changes.
 *
 * This function returns an Observable that emits a void value whenever any of the files in the provided dependencies set changes.
 * The Observable is created by merging Observables that emit on file changes for each dependency.
 * When a file changes, the function filters out events that are not updates, maps the event to a void value, and emits the void value.
 * @param {ObservableSet<string>} dependencies - An ObservableSet of file paths to watch for changes.
 * @returns {Observable<void>} - An Observable that emits a void value whenever any of the files in the provided dependencies set changes.
 */
function onDependenciesChange(dependencies) {
    return dependencies.changes().pipe((0, operators_1.startWith)(dependencies.asArray()), (0, operators_1.switchMap)((deps) => (0, rxjs_1.merge)(...deps.map((dep) => (0, watcher_1.watchFile)(dep, 'update').pipe((0, rxjs_1.map)(() => void 0))))));
}
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