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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.makeWaitForNextTask = makeWaitForNextTask;
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// See https://joel.tools/microtasks/
function makeWaitForNextTask() {
// As of Mar 2021, Electron v12 doesn't create new task with `setImmediate` despite
// using Node 14 internally, so we fallback to `setTimeout(0)` instead.
// @see https://github.com/electron/electron/issues/28261
if (process.versions.electron) return callback => setTimeout(callback, 0);
if (parseInt(process.versions.node, 10) >= 11) return setImmediate;
// Unlike Node 11, Node 10 and less have a bug with Task and MicroTask execution order:
// - https://github.com/nodejs/node/issues/22257
//
// So we can't simply run setImmediate to dispatch code in a following task.
// However, we can run setImmediate from-inside setImmediate to make sure we're getting
// in the following task.
let spinning = false;
const callbacks = [];
const loop = () => {
const callback = callbacks.shift();
if (!callback) {
spinning = false;
return;
}
setImmediate(loop);
// Make sure to call callback() as the last thing since it's
// untrusted code that might throw.
callback();
};
return callback => {
callbacks.push(callback);
if (!spinning) {
spinning = true;
setImmediate(loop);
}
};
}