// 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;
}
/**
 * Convert (copy) ArrayBuffer to Buffer
 */
export function toBuffer(binaryData) {
    if (Buffer.isBuffer(binaryData)) {
        return binaryData;
    }
    if (ArrayBuffer.isView(binaryData)) {
        binaryData = binaryData.buffer;
    }
    // TODO - move to loaders.gl/polyfills
    if (typeof Buffer !== 'undefined' && binaryData instanceof ArrayBuffer) {
        return Buffer.from(binaryData);
    }
    throw new Error('toBuffer');
}