PLAY Inc. Sponsors "TSKaigi 2026," Japan's Largest TypeScript Technology Conference, as a Silver Sponsor

PLAY Inc. (Shibuya-ku, Tokyo, Representative Director and President Kazumichi Kuroda, hereinafter: PLAY) will be a silver sponsor of "TSKaigi 2026," Japan's largest TypeScript-themed technology conference, organized by the General Incorporated Association TSKaigi Association, to be held on May 22 (Fri) and 23 (Sat), 2026.

**Background of Sponsorship**
The programming language TypeScript has been expanding its application scope from frontend to backend in recent years. PLAY also adopts TypeScript across multiple products and services, supporting the quality of large-scale systems through safe development. This sponsorship stems from our desire to invigorate the TypeScript community's expansion and knowledge-sharing opportunities.

**About "TSKaigi 2026"** (https://2026.tskaigi.org/)
With the mission of "Learn, Connect, and Break the 'Mold'," this is Japan's largest conference covering all themes related to TypeScript.

**Event Dates**
May 22-23, 2026 (2 Days)

**Venue**
Bellesalle Haneda Airport (2-7-1 Haneda Airport, Ota-ku, Tokyo 144-0041)

**Application Method**
Online participation: https://peatix.com/event/4932232

**Speaking Engagement Information**
A session by Ken Ichikawa from PLAY was selected from the talk proposals submitted to TSKaigi, and his speaking engagement has been confirmed. In a 10-minute session, he will introduce a method for safely migrating existing JavaScript assets to TypeScript using AI agents. We invite you to attend.

**Title**
Refactoring Strategy in the LLM Era: Gradual and Safe TS Migration Method Using AI Agents

**Speaking Date and Time**
May 23 (Sat), 2026, 12:00 ~ 12:10

**Venue**
Bellesalle Haneda Airport (2-7-1 Haneda Airport, Ota-ku, Tokyo 144-0041)

UPSIDER Track

**Speaker**
Ken Ichikawa, Tech Lead, Technology Promotion Group, Technology Infrastructure Department, PLAY Inc.

Ken Ichikawa, Tech Lead, Technology Promotion Group, Technology Infrastructure Department, PLAY Inc.
Joined PLAY Inc. as an engineer in 2020.
He has led the development of the viewing analysis platform "STREAKS" for the video streaming platform and the video CMS "GALLERY." From 2022, he was appointed manager of multiple products in "PLAY CLOUD," which comprehensively supports video production and distribution, leading the business in both development and management. From 2025, as a Tech Lead, he has been engaged in resolving cross-product technical issues, architectural modernization, and improving observability. He is focusing on building sustainable systems to support large-scale video distribution.

Refactoring Strategy in the LLM Era: Gradual and Safe TS Migration Method Using AI Agents
"Migrating existing large JavaScript projects to TypeScript" - this is a challenge many developers face. However, with the advent of LLMs and autonomous AI agents, the hurdles for this challenge are lowering. In this session, we will share a real-world case study and insights into how a large-scale frontend project built with React was gradually and safely migrated to TypeScript using AI agents.
We will introduce the specific process of how not just types were applied, but how an OpenAPI-generated client SDK was integrated with AI agents to infuse "meaningful types" into components and logic.

**Company Profile**
Company Name: PLAY Inc.
Representative Director and President: Kazumichi Kuroda
Business Description: Video Solution Business
Established: March 16, 2010
Location: Shibuya Solasta, 1-21-1 Dogenzaka, Shibuya-ku, Tokyo
URL: https://play.jp/

**Contact for this press release**
PLAY Inc. Public Relations
E-mail: pr@play.jp