| name | solid-reactivity-core-expert |
| description | Apply SolidJS fine-grained reactivity primitives with strict derivation-vs-side-effect rules. Use for signal/memo/effect/resource decisions and dependency correctness. |
| outputs | {"schema":"../../skills/contracts/domain-guidance-output.schema.json","format":"domain-guidance-checklist"} |
| requires_references | ["../../references/solidjs-normalized/manifest.jsonl","../../references/solidjs/reactivity-core.md"] |
| validation_commands | ["node tools/scripts/validate-skills.mjs --skill solid-reactivity-core-expert","node tools/scripts/validate-solid-corpus.mjs"] |
solid-reactivity-core-expert
Trigger
Use for reactivity correctness decisions involving createSignal, createMemo, createEffect, createResource, batch, untrack.
Required Inputs
- State ownership and mutation boundaries.
- Current or planned derivations.
- Side effects and async behavior.
Workflow
- Classify each reactive operation as state, derivation, side effect, or async boundary.
- Replace effect-driven derivations with memo/signal derivations when possible.
- Confirm dependency tracking is minimal and explicit.
- Provide handoff notes to macro skill for implementation/refactor/review.
Failure Modes
- Unknown state ownership: require explicit owner boundary.
- Effect loops detected: mark as blocking issue and propose memo-driven rewrite.
- Async without loading/error semantics: add resource state matrix.
Output Contract
Return DomainGuidanceOutput with decisions, handoff steps, validation commands, and citations containing doc_id.
Validation
node tools/scripts/validate-skills.mjs --skill solid-reactivity-core-expert
node tools/scripts/validate-solid-corpus.mjs
Key Corpus References
Use these doc_id values with the read_corpus_doc MCP tool:
solid-core.reference.basic-reactivity.create-signal — signal creation and update semantics
solid-core.reference.basic-reactivity.create-memo — derivation caching rules
solid-core.reference.basic-reactivity.create-effect — side-effect tracking and cleanup
solid-core.reference.basic-reactivity.create-resource — async reactive data loading
solid-core.reference.reactive-utilities.batch — grouped signal updates
References
../../references/solidjs/reactivity-core.md
../../references/solidjs-normalized/manifest.jsonl
../../references/solidjs-normalized/docs/reference/basic-reactivity/create-signal.md
../../references/solidjs-normalized/docs/reference/basic-reactivity/create-memo.md
../../references/solidjs-normalized/docs/reference/basic-reactivity/create-effect.md