@tsdi/pack/es2015/tasks/WatchActivity.js

@tsdi/pack is simple build tasks, base on AOP, Ioc container, via @tsdi. dev build pack activities.

import { __awaiter, __decorate, __metadata } from "tslib";
import { PromiseUtil } from '@tsdi/ioc';
import { Input } from '@tsdi/components';
import { Task } from '@tsdi/activities';
import { fromEventPattern } from 'rxjs';
import { bufferTime, filter } from 'rxjs/operators';
import { NodeActivity } from '../NodeActivity';
const chokidar = require('chokidar');
/**
 * watch activity.
 *
 * @export
 * @class WatchActivity
 * @extends {BuildHandleActivity}
 */
let WatchActivity = class WatchActivity extends NodeActivity {
    execute(ctx) {
        return __awaiter(this, void 0, void 0, function* () {
            let watchSrc = this.watch;
            let options = this.options;
            let watcher = chokidar.watch(ctx.platform.normalizeSrc(watchSrc), Object.assign({ ignored: /[\/\\]\./, ignoreInitial: true, cwd: ctx.platform.getRootPath() }, options));
            let defer = PromiseUtil.defer();
            fromEventPattern(handler => {
                watcher.on('add', paths => handler(paths));
                watcher.on('change', paths => handler(paths));
                watcher.on('unlink', paths => handler(paths));
                watcher.on('unlinkDir', paths => handler(paths));
            }, handler => {
                watcher.close();
            })
                .pipe(bufferTime(300), filter(c => c.length > 0))
                .subscribe(chg => {
                ctx.getExector().runActivity(this.body);
            });
            defer.promise;
        });
    }
    static ρAnn() {
        return { "name": "WatchActivity", "params": { "execute": ["ctx"] } };
    }
};
__decorate([
    Input(),
    __metadata("design:type", Object)
], WatchActivity.prototype, "watch", void 0);
__decorate([
    Input('watchOptions'),
    __metadata("design:type", Object)
], WatchActivity.prototype, "options", void 0);
__decorate([
    Input({ bindingType: 'dynamic' }),
    __metadata("design:type", Object)
], WatchActivity.prototype, "body", void 0);
WatchActivity = __decorate([
    Task('watch')
], WatchActivity);
export { WatchActivity };

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