[cowboyd]

Motivation

Upgrade Revolution to the current stable Effection v4 API and modernize its Deno dependency lockfile. Effection v4 separates several responsibilities previously bundled into call() and action(), and changes child-task scheduling semantics.

Approach

• Upgrade Effection from 3.6.1 to 4.0.3 and require v4 as the npm peer dependency.
• Replace promise-valued call() usage with until().
• Model HTTP response short-circuiting explicitly with scoped(), withResolvers(), and race().
• Establish the SSE channel subscription before spawning its consumer, avoiding reliance on child-task scheduling order.
• Normalize route parameters before storing them in an Effection context.
• Regenerate the Deno 2 lockfile and update the HAST className representation exposed by current dependency resolution.

Learning

• https://frontside.com/effection/guides/v4/upgrade/

[taras]

Nice!