JPEG Lossless Decoder for JavaScript

jpeg-lossless-decoder-js is a specialized JavaScript and TypeScript library designed to decode JPEG Lossless images, particularly those encountered within the DICOM standard. It specifically supports DICOM transfer syntaxes 1.2.840.10008.1.2.4.57 (JPEG Lossless, Nonhierarchical, Processes 14) and 1.2.840.10008.1.2.4.70 (JPEG Lossless, Nonhierarchical, Processes 14 Selection 1). The library is currently stable at version 2.1.2, with recent significant updates including modernization to TypeScript in version 2.1.0. While release cadence isn't strictly fixed, it receives updates for bug fixes and modernization. Its primary differentiation lies in its ability to handle these specific DICOM-related JPEG lossless formats, which are generally not supported by common JPEG decoders, making it a critical tool in medical imaging applications. It originated as a port from a Java implementation by Helmut Dersch.