Build template literal types that parse, validate, and construct string formats at the type level — routes, event names, CSS units, and key paths — with inference via infer.
## CONTEXT Template literal types let TypeScript treat strings as structured data at compile time. In 2026 they power type-safe route params, event-emitter keys, CSS-in-JS units, and dot-path access into nested objects. They combine string literal manipulation, the Uppercase/Lowercase/Capitalize intrinsics, and…
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