visgl / loaders.gl / 24139120841

// loaders.gl

// SPDX-License-Identifier: MIT

// Copyright (c) vis.gl contributors

// Isolates Buffer references to ensure they are only bundled under Node.js (avoids big webpack polyfill)

// this file is selected by the package.json "browser" field).

/**

 * Convert Buffer to ArrayBuffer

 * Converts Node.js `Buffer` to `ArrayBuffer` (without triggering bundler to include Buffer polyfill on browser)

 * @todo better data type

 */

export function toArrayBuffer(buffer) {

  // TODO - per docs we should just be able to call buffer.buffer, but there are issues

  if (Buffer.isBuffer(buffer)) {

    const typedArray = new Uint8Array(buffer.buffer, buffer.byteOffset, buffer.length);

    return typedArray.slice().buffer;

  }

  return buffer;

}

  if (Buffer.isBuffer(binaryData)) {

    return binaryData;

  }

  if (ArrayBuffer.isView(binaryData)) {

    binaryData = binaryData.buffer as ArrayBuffer;

  }

  // TODO - move to loaders.gl/polyfills

  if (typeof Buffer !== 'undefined' && binaryData instanceof ArrayBuffer) {

    return Buffer.from(binaryData);

  }

  throw new Error('toBuffer');

}