transformers.js

d8340931 - Emit `progress_total` events from `PreTrainedModel.from_pretrained()` (#1615)

Emit `progress_total` events from `PreTrainedModel.from_pretrained()` (#1615) * Emit progress_total events from PreTrainedModel.from_pretrained() Closes #1052. When a progress_callback is provided, gather file metadata (sizes) upfront via HEAD/Range requests before downloads begin. This lets consumers build a single aggregate progress bar across all model files, matching the behavior already present in the pipeline() API. The implementation reuses the existing get_model_files() and get_file_metadata() utilities and follows the same wrapping pattern used in pipelines.js, emitting progress_total events that include per-file and overall loaded/total byte counts. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * fix: address review — config.json progress + pipeline() duplication Fixes two issues raised in code review: 1. config.json is fetched by AutoConfig.from_pretrained() before the progress tracker is initialized. Pre-mark it as fully loaded in files_loading so total progress reaches 100%. 2. pipeline() already wraps the callback with progress_total events. When from_pretrained() wrapped it again, users got duplicate events. Fix: mark wrapped callbacks with _progress_total_wrapped flag. from_pretrained() checks the flag and skips wrapping if already set. pipeline()'s wrapper now also sets this flag. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * switched to wrapper-class instead of _progress_total_wrapped property * created /src/models/session_config.js to avoid circular dependencies * Use callable objects instead * fix jsdoc * fix imports * Add strict progress callback unit tests * Deduplicate concurrent loads and fix progress w/ node loading from path * formatting * increase larger whisper models loading times * make tests stricter --------- Co-authored-by: JacobiusMakes <jgalperin98@gmail.com> Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com> Co-authored-by: Nico Martin <mail@nico.dev>