@browserstack/testcafe
Version:
Automated browser testing for the modern web development stack.
62 lines • 7.45 kB
JavaScript
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const events_1 = __importDefault(require("events"));
const fs_1 = __importDefault(require("fs"));
const modules_graph_1 = __importDefault(require("./modules-graph"));
const WATCH_LOCKED_TIMEOUT = 700;
let instance = null;
class FileWatcher extends events_1.default {
constructor() {
super();
if (!instance) {
this.watchers = {};
this.lockedFiles = {};
this.modulesGraph = null;
this.lastChangedFiles = [];
instance = this;
}
return instance;
}
_onChanged(controller, file) {
const cache = require.cache;
if (!this.modulesGraph) {
this.modulesGraph = new modules_graph_1.default();
this.modulesGraph.build(cache, Object.keys(this.watchers));
}
else {
this.lastChangedFiles.forEach(changedFile => this.modulesGraph.rebuildNode(cache, changedFile));
this.lastChangedFiles = [];
}
this.lastChangedFiles.push(file);
this.modulesGraph.clearParentsCache(cache, file);
controller.runTests(true);
}
_watch(controller, file) {
if (this.lockedFiles[file])
return;
this.lockedFiles[file] = setTimeout(() => {
this._onChanged(controller, file);
delete this.lockedFiles[file];
}, WATCH_LOCKED_TIMEOUT);
}
stop() {
Object.values(this.watchers).forEach(watcher => {
watcher.close();
});
}
addFile(controller, file) {
if (!this.watchers[file] && file.indexOf('node_modules') < 0) {
if (this.modulesGraph) {
this.lastChangedFiles.push(file);
this.modulesGraph.addNode(file, require.cache);
}
this.watchers[file] = fs_1.default.watch(file, () => this._watch(controller, file));
}
}
}
exports.default = FileWatcher;
module.exports = exports.default;
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