Building a Transpiler to Migrate over 4,000 Tests to Playwright

Short summary

An engineer migrated 4,000+ tests from a workbook-based QA framework to Playwright using a custom transpiler pipeline. The pipeline stages included extraction, content graph mining, semantic analysis, and TypeScript code emission via ts-morph. An LLM-based migration was considered but rejected due to cost, determinism, and traceability constraints.

• •Migrated 4,000+ tests from workbook-based framework to Playwright via a custom transpiler pipeline
• •Pipeline stages: extraction → content graph mining → semantic analysis → emission using ts-morph
• •LLM-based migration rejected due to cost, determinism, and traceability requirements

Generated with AI, which can make mistakes.