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40
node_modules/jest-config/build/getMaxWorkers.js
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vendored
40
node_modules/jest-config/build/getMaxWorkers.js
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vendored
@@ -25,30 +25,34 @@ function _interopRequireDefault(obj) {
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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function getMaxWorkers(argv) {
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function getMaxWorkers(argv, defaultOptions) {
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if (argv.runInBand) {
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return 1;
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} else if (argv.maxWorkers) {
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// TODO: How to type this properly? Should probably use `coerce` from `yargs`
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const maxWorkers = argv.maxWorkers;
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const parsed = parseInt(maxWorkers, 10);
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if (
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typeof maxWorkers === 'string' &&
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maxWorkers.trim().endsWith('%') &&
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parsed > 0 &&
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parsed <= 100
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) {
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const cpus = _os().default.cpus().length;
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const workers = Math.floor((parsed / 100) * cpus);
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return workers >= 1 ? workers : 1;
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}
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return parsed > 0 ? parsed : 1;
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return parseWorkers(argv.maxWorkers);
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} else if (defaultOptions && defaultOptions.maxWorkers) {
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return parseWorkers(defaultOptions.maxWorkers);
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} else {
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// In watch mode, Jest should be unobtrusive and not use all available CPUs.
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const cpus = _os().default.cpus() ? _os().default.cpus().length : 1;
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return Math.max(argv.watch ? Math.floor(cpus / 2) : cpus - 1, 1);
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}
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}
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const parseWorkers = maxWorkers => {
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const parsed = parseInt(maxWorkers.toString(), 10);
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if (
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typeof maxWorkers === 'string' &&
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maxWorkers.trim().endsWith('%') &&
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parsed > 0 &&
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parsed <= 100
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) {
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const cpus = _os().default.cpus().length;
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const workers = Math.floor((parsed / 100) * cpus);
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return workers >= 1 ? workers : 1;
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}
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return parsed > 0 ? parsed : 1;
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};
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