Repeatability
Medium
The general pattern of route-to-component splitting and lazy-loading D3/Recharts is well-understood and structurally repeatable. However, the specific refactor depends heavily on the actual component tree, import graph, and existing routing setup, which vary per project.
Ambiguity Tolerance
Medium
The 500 KB target is a crisp, measurable success criterion, which is favorable. But 'without breaking existing routing' and 'granular component-level splitting' leave room for interpretation about which components qualify and what constitutes a breaking change.
Data & Tool Availability
Low
The agent needs the full codebase, existing webpack config, package.json, and ideally a running build environment to measure actual bundle sizes. Without these, it can only produce a plausible-but-unverified patch, not a confirmed solution.
Error Cost
Medium
A bad webpack config or incorrect dynamic import refactor can break the app's routing or cause runtime errors in production. These are reversible via version control, but diagnosing subtle lazy-load failures or chunk-loading errors can be time-consuming.
Human Judgment Required
Medium
Deciding which components are worth splitting (cost-benefit of added complexity vs. size savings) and validating that the routing still works correctly requires a developer to run and test the build. The strategic judgment is modest but the verification step is non-negotiable.