Sanity Config Reducers

Start Here

Use this skill when a config value can be supplied by root config or plugins and needs deterministic merge behavior.

Inspect these files first:

• packages/sanity/src/core/config/types.ts
• packages/sanity/src/core/config/configPropertyReducers.ts
• packages/sanity/src/core/config/prepareConfig.tsx
• packages/sanity/src/core/config/flattenConfig.ts
• packages/sanity/src/core/config/resolveDefaultPlugins.ts if the config gates default plugin injection.

Reducer Pattern

Reducers usually: