react-native/Libraries/Network/convertRequestBody.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule convertRequestBody
* @flow
*/
'use strict';
const binaryToBase64 = require('binaryToBase64');
const FormData = require('FormData');
export type RequestBody =
string
| FormData
| {uri: string}
| ArrayBuffer
| $ArrayBufferView
;
function convertRequestBody(body: RequestBody): Object {
if (typeof body === 'string') {
return {string: body};
}
if (body instanceof FormData) {
return {formData: body.getParts()};
}
if (body instanceof ArrayBuffer || ArrayBuffer.isView(body)) {
// $FlowFixMe: no way to assert that 'body' is indeed an ArrayBufferView
return {base64: binaryToBase64(body)};
}
return body;
}
module.exports = convertRequestBody;