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d01ab66b47
Reviewed By: sahrens Differential Revision: D7961488 fbshipit-source-id: 05f9b8b0b91ae77f9040a5321ccc18f7c3c1ce9a
33 lines
919 B
JavaScript
33 lines
919 B
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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* @format
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* @flow
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*/
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'use strict';
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/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
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* found when Flow v0.54 was deployed. To see the error delete this comment and
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* run Flow. */
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const base64 = require('base64-js');
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function binaryToBase64(data: ArrayBuffer | $ArrayBufferView) {
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if (data instanceof ArrayBuffer) {
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data = new Uint8Array(data);
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}
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if (data instanceof Uint8Array) {
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return base64.fromByteArray(data);
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}
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if (!ArrayBuffer.isView(data)) {
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throw new Error('data must be ArrayBuffer or typed array');
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}
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const {buffer, byteOffset, byteLength} = data;
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return base64.fromByteArray(new Uint8Array(buffer, byteOffset, byteLength));
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}
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module.exports = binaryToBase64;
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