19 lines
551 B
TypeScript
19 lines
551 B
TypeScript
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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export function fileToBytes(file: Blob): Promise<Uint8Array> {
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return new Promise((resolve, rejectPromise) => {
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const FR = new FileReader();
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FR.onload = () => {
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if (!FR.result || typeof FR.result === 'string') {
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rejectPromise(new Error('bytesFromFile: No result!'));
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return;
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}
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resolve(new Uint8Array(FR.result));
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};
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FR.onerror = rejectPromise;
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FR.onabort = rejectPromise;
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FR.readAsArrayBuffer(file);
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});
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}
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