source: trip-planner-front/node_modules/webpack/hot/lazy-compilation-web.js@ ceaed42

Last change on this file since ceaed42 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 1.6 KB
Line 
1/* global __resourceQuery */
2
3"use strict";
4
5if (typeof EventSource !== "function") {
6 throw new Error(
7 "Environment doesn't support lazy compilation (requires EventSource)"
8 );
9}
10
11var urlBase = decodeURIComponent(__resourceQuery.slice(1));
12var activeEventSource;
13var activeKeys = new Map();
14var errorHandlers = new Set();
15
16var updateEventSource = function updateEventSource() {
17 if (activeEventSource) activeEventSource.close();
18 if (activeKeys.size) {
19 activeEventSource = new EventSource(
20 urlBase + Array.from(activeKeys.keys()).join("@")
21 );
22 activeEventSource.onerror = function (event) {
23 errorHandlers.forEach(function (onError) {
24 onError(
25 new Error(
26 "Problem communicating active modules to the server: " +
27 event.message +
28 " " +
29 event.filename +
30 ":" +
31 event.lineno +
32 ":" +
33 event.colno +
34 " " +
35 event.error
36 )
37 );
38 });
39 };
40 } else {
41 activeEventSource = undefined;
42 }
43};
44
45exports.keepAlive = function (options) {
46 var data = options.data;
47 var onError = options.onError;
48 var active = options.active;
49 var module = options.module;
50 errorHandlers.add(onError);
51 var value = activeKeys.get(data) || 0;
52 activeKeys.set(data, value + 1);
53 if (value === 0) {
54 updateEventSource();
55 }
56 if (!active && !module.hot) {
57 console.log(
58 "Hot Module Replacement is not enabled. Waiting for process restart..."
59 );
60 }
61
62 return function () {
63 errorHandlers.delete(onError);
64 setTimeout(function () {
65 var value = activeKeys.get(data);
66 if (value === 1) {
67 activeKeys.delete(data);
68 updateEventSource();
69 } else {
70 activeKeys.set(data, value - 1);
71 }
72 }, 1000);
73 };
74};
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