#V8 • 2 Articles
Articles tagged with #V8
A curated list of engineering series, deep dives, and notes related to #V8.
Engineering Vitest Internals & Modern Testing Architecture • Part 12 2026-10-20
Coverage Engines: Bytecode Coverage via V8 AST Counters vs AST Instrumentation with Istanbul
Analyze code coverage providers in Vitest: V8 native bytecode counters vs Istanbul AST instrumentation.
Engineering Vitest Internals & Modern Testing Architecture • Part 5 2026-09-25
Assertion Engine Mechanics: First-Principles Comparison of Vitest Matchers
A first-principles deep dive into Vitest's assertion engine. Compare toBe, toEqual, toStrictEqual, toContain, toMatchObject, and spy matchers down to V8 heap pointers and prototype resolution.