// loaders.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors
import * as node from "../node/buffer.js";
/**
 * Check for Node.js `Buffer` (without triggering bundler to include Buffer polyfill on browser)
 */
export function isBuffer(value) {
    return value && typeof value === 'object' && value.isBuffer;
}
/**
 * Converts to Node.js `Buffer` (without triggering bundler to include Buffer polyfill on browser)
 * @todo better data type
 */
export function toBuffer(data) {
    return node.toBuffer ? node.toBuffer(data) : data;
}
/**
 * Convert an object to an array buffer
 */
export function toArrayBuffer(data) {
    // Note: Should be called first, Buffers can trigger other detections below
    if (isBuffer(data)) {
        return node.toArrayBuffer(data);
    }
    if (data instanceof ArrayBuffer) {
        return data;
    }
    // Careful - Node Buffers look like Uint8Arrays (keep after isBuffer)
    if (ArrayBuffer.isView(data)) {
        if (data.byteOffset === 0 && data.byteLength === data.buffer.byteLength) {
            return data.buffer;
        }
        return data.buffer.slice(data.byteOffset, data.byteOffset + data.byteLength);
    }
    if (typeof data === 'string') {
        const text = data;
        const uint8Array = new TextEncoder().encode(text);
        return uint8Array.buffer;
    }
    // HACK to support Blob polyfill
    if (data && typeof data === 'object' && data._toArrayBuffer) {
        return data._toArrayBuffer();
    }
    throw new Error('toArrayBuffer');
}