Zach Leat is a frontend developer and accessibility advocate known for his expertise in web typography and design systems. Readers can learn about typography principles, web design trends, and accessibility best practices. With articles, tutorials, and design showcases, Zach Leat provides  guidance and inspiration for creating visually appealing and accessible web experiences.

Zach Leatherman

Explores the limitation in JavaScript where boolean coercion for objects cannot be intercepted or customized, unlike string or number coercion. Demonstrates attempts to override boolean coercion behavior using Symbol.toPrimitive and valueOf methods in custom classes extending Boolean, but these methods are not triggered during boolean coercion. The author seeks a workaround or language-level solution to enable custom boolean coercion for objects.

I want to intercept Boolean Coercion for Objects in JavaScript—zachleat.com