@ng-doc/builder/engine/core/watcher/watch.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.watch = watch;
const tslib_1 = require("tslib");
const builder_1 = require("@ng-doc/builder");
const watcher = tslib_1.__importStar(require("@parcel/watcher"));
const path_1 = require("path");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
let WATCHER = null;
/**
 *
 * @param path
 * @param dir
 */
function watch(path, dir) {
    path = (0, path_1.resolve)(path);
    if (!WATCHER) {
        let unsubscribe = () => { };
        WATCHER = new rxjs_1.Observable((subscriber) => {
            watcher
                .subscribe(builder_1.GLOBALS.workspaceRoot, (err, events) => {
                if (err) {
                    console.error(err);
                    subscriber.error(err);
                    return;
                }
                subscriber.next(events);
            }, { ignore: ['node_modules'] })
                .then((unsub) => (unsubscribe = unsub.unsubscribe));
            return () => {
                unsubscribe();
                WATCHER = null;
            };
        }).pipe((0, operators_1.share)());
    }
    return WATCHER.pipe((0, operators_1.map)((events) => events.filter((event) => {
        return dir ? event.path.startsWith(path) : event.path.endsWith(path);
    })), (0, operators_1.filter)((events) => events.length > 0));
}
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