@huggingface/blob/dist/chunk-WIMQPORG.mjs

Utilities to convert URLs and files to Blobs, internally used by Hugging Face libs

// src/utils/WebBlob.ts
var WebBlob = class extends Blob {
  static async create(url, opts) {
    const customFetch = opts?.fetch ?? fetch;
    const response = await customFetch(url, { method: "HEAD" });
    const size = Number(response.headers.get("content-length"));
    const contentType = response.headers.get("content-type") || "";
    const supportRange = response.headers.get("accept-ranges") === "bytes";
    if (!supportRange || size < (opts?.cacheBelow ?? 1e6)) {
      return await (await customFetch(url)).blob();
    }
    return new WebBlob(url, 0, size, contentType, true, customFetch);
  }
  url;
  start;
  end;
  contentType;
  full;
  fetch;
  constructor(url, start, end, contentType, full, customFetch) {
    super([]);
    this.url = url;
    this.start = start;
    this.end = end;
    this.contentType = contentType;
    this.full = full;
    this.fetch = customFetch;
  }
  get size() {
    return this.end - this.start;
  }
  get type() {
    return this.contentType;
  }
  slice(start = 0, end = this.size) {
    if (start < 0 || end < 0) {
      new TypeError("Unsupported negative start/end on FileBlob.slice");
    }
    const slice = new WebBlob(
      this.url,
      this.start + start,
      Math.min(this.start + end, this.end),
      this.contentType,
      start === 0 && end === this.size ? this.full : false,
      this.fetch
    );
    return slice;
  }
  async arrayBuffer() {
    const result = await this.fetchRange();
    return result.arrayBuffer();
  }
  async text() {
    const result = await this.fetchRange();
    return result.text();
  }
  stream() {
    const stream = new TransformStream();
    this.fetchRange().then((response) => response.body?.pipeThrough(stream)).catch((error) => stream.writable.abort(error.message));
    return stream.readable;
  }
  fetchRange() {
    const fetch2 = this.fetch;
    if (this.full) {
      return fetch2(this.url);
    }
    return fetch2(this.url, {
      headers: {
        Range: `bytes=${this.start}-${this.end - 1}`
      }
    });
  }
};

export {
  WebBlob
};