1 | "use strict";
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | const chokidar = require("chokidar");
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4 | const path = require("path");
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5 | class FilesWatcher {
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6 | constructor(watchPaths, watchExtensions) {
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7 | this.watchPaths = watchPaths;
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8 | this.watchExtensions = watchExtensions;
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9 | this.watchExtensions = watchExtensions;
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10 | this.watchers = [];
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11 | this.listeners = {};
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12 | }
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13 | isFileSupported(filePath) {
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14 | return this.watchExtensions.indexOf(path.extname(filePath)) !== -1;
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15 | }
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16 | watch() {
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17 | if (this.isWatching()) {
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18 | throw new Error('Cannot watch again - already watching.');
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19 | }
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20 | this.watchers = this.watchPaths.map((watchPath) => {
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21 | return chokidar
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22 | .watch(watchPath, { persistent: true, alwaysStat: true })
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23 | .on('change', (filePath, stats) => {
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24 | if (this.isFileSupported(filePath)) {
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25 | (this.listeners['change'] || []).forEach(changeListener => {
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26 | changeListener(filePath, stats);
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27 | });
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28 | }
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29 | })
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30 | .on('unlink', (filePath) => {
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31 | if (this.isFileSupported(filePath)) {
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32 | (this.listeners['unlink'] || []).forEach(unlinkListener => {
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33 | unlinkListener(filePath);
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34 | });
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35 | }
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36 | });
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37 | });
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38 | }
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39 | isWatchingFile(filePath) {
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40 | return (this.isWatching() &&
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41 | this.isFileSupported(filePath) &&
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42 | this.watchPaths.some(watchPath => filePath.startsWith(watchPath)));
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43 | }
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44 | isWatching() {
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45 | return this.watchers.length > 0;
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46 | }
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47 | on(event, listener) {
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48 | if (!this.listeners[event]) {
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49 | this.listeners[event] = [];
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50 | }
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51 | this.listeners[event].push(listener);
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52 | }
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53 | off(event, listener) {
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54 | if (this.listeners[event]) {
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55 | this.listeners[event] = this.listeners[event].filter(oldListener => oldListener !== listener);
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56 | }
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57 | }
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58 | }
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59 | exports.FilesWatcher = FilesWatcher;
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60 |
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