@loaders.gl/pmtiles/dist/lib/blob-source.js

Framework-independent loader for the pmtiles format

// loaders.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors
/**
 * A PMTiles library compatible source that reads from blobs
 * @deprecated TODO - reimplement as ReadableFileSource
 * Use loaders.gl HTTP range requests instead
 */
export class BlobSource {
    blob;
    key;
    constructor(blob, key) {
        this.blob = blob;
        this.key = key;
    }
    // TODO - how is this used?
    getKey() {
        // @ts-expect-error url is only defined on File subclass
        return this.blob.url || '';
    }
    async getBytes(offset, length, signal) {
        const slice = this.blob.slice(offset, offset + length);
        const data = await slice.arrayBuffer();
        return {
            data
            // etag: response.headers.get('ETag') || undefined,
            // cacheControl: response.headers.get('Cache-Control') || undefined,
            // expires: response.headers.get('Expires') || undefined
        };
    }
}