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core: fix calling close() on null in hub.js

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This commit is contained in:
Micooz 2017-08-28 22:40:30 +08:00
parent b6cf12315e
commit 5f85be4b75
1 changed files with 3 additions and 0 deletions
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3
src/core/hub.js
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@ -53,6 +53,9 @@ export class Hub extends EventEmitter {
}
terminate() {
if (this._localServer === null) {
return;
}
this._localServer.close();
this._localServer = null;
this._isFirstWorker && logger.info('==> [hub] shutdown');