Takeshi Ken Hamasaki updated the FileSystemFileHandle.getFile() documentation in the mdn/translated-content repository, focusing on clarifying the method’s availability within Web Workers. Using Markdown and technical writing skills, Takeshi aligned the translated documentation with the original source text, ensuring traceability and consistency for future maintenance. The update addressed developer guidance by detailing safe usage patterns in worker contexts, reducing ambiguity for web developers. No bugs were fixed during this period, as the primary effort centered on documentation quality and localization discipline. The work demonstrated depth in cross-language documentation practices and contributed to a smoother developer experience through precise, reference-backed changes.