32 lines
1.0 KiB
JavaScript
32 lines
1.0 KiB
JavaScript
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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'use strict';
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const fetch = require('node-fetch');
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/**
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* Indicates whether or not the packager is running. It returns a promise that
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* when fulfilled can returns one out of these possible values:
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* - `running`: the packager is running
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* - `not_running`: the packager nor any process is running on the expected
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* port.
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* - `unrecognized`: one other process is running on the port we expect the
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* packager to be running.
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*/
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function isPackagerRunning() {
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return fetch('http://localhost:8081/status').then(
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res => res.text().then(body =>
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body === 'packager-status:running' ? 'running' : 'unrecognized'
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),
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() => 'not_running'
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);
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}
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module.exports = isPackagerRunning;
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