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39 lines
1.2 KiB
39 lines
1.2 KiB
'use strict'; |
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Object.defineProperty(exports, '__esModule', { |
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value: true |
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}); |
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exports.default = convertDescriptorToString; |
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/** |
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved. |
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* |
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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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// See: https://github.com/facebook/jest/pull/5154 |
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function convertDescriptorToString(descriptor) { |
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if ( |
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typeof descriptor === 'string' || |
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typeof descriptor === 'number' || |
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descriptor === undefined |
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) { |
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return descriptor; |
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} |
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if (typeof descriptor !== 'function') { |
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throw new Error('describe expects a class, function, number, or string.'); |
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} |
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if (descriptor.name !== undefined) { |
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return descriptor.name; |
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} // Fallback for old browsers, pardon Flow |
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const stringified = descriptor.toString(); |
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const typeDescriptorMatch = stringified.match(/class|function/); |
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const indexOfNameSpace = // @ts-ignore: typeDescriptorMatch exists |
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typeDescriptorMatch.index + typeDescriptorMatch[0].length; |
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const indexOfNameAfterSpace = stringified.search(/\(|\{/); |
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const name = stringified.substring(indexOfNameSpace, indexOfNameAfterSpace); |
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return name.trim(); |
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}
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