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main
packages/react-devtools-timeline/src/import-worker/readInputData.js
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Andrew Clark
[Codemod] Update copyright header to Meta (#25315)
18 окт 2022, 18:19
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18 окт 2022, 18:19
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/** * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @flow */ import nullthrows from 'nullthrows'; import InvalidProfileError from './InvalidProfileError'; export const readInputData = (file: File): Promise<string> => { if (!file.name.endsWith('.json')) { throw new InvalidProfileError( 'Invalid file type. Only JSON performance profiles are supported', ); } const fileReader = new FileReader(); return new Promise((resolve, reject) => { fileReader.onload = () => { const result = nullthrows(fileReader.result); if (typeof result === 'string') { resolve(result); } reject(new InvalidProfileError('Input file was not read as a string')); }; fileReader.onerror = () => reject(fileReader.error); fileReader.readAsText(file); }); };