type

Type -- Type System & Schema Validation

Activate When

• /godmode:type, "type safety", "TypeScript strict"
• "Zod", "runtime validation", "schema validation"
• Type errors are frequent or any is widespread
• API boundaries lack runtime validation

Workflow

Step 1: Type Safety Audit

# Count any/unknown usage
grep -rn ": any" --include="*.ts" --include="*.tsx" \
  src/ | wc -l
grep -rn "as any" --include="*.ts" --include="*.tsx" \
  src/ | wc -l
grep -rn "@ts-ignore" --include="*.ts" \
  --include="*.tsx" src/ | wc -l

# Check tsconfig strictness
grep -A20 '"compilerOptions"' tsconfig.json \
  | grep -E "strict|noImplicit|noUnchecked"

TYPE SAFETY AUDIT:
| Metric            | Value          |
|------------------|---------------|
| Strict mode      | ON/OFF/PARTIAL |
| `any` count      | {N} explicit   |
| `as any` casts   | {N}            |
| @ts-ignore       | {N} suppressed |
| Runtime validation| YES/NO         |
| Schema library   | Zod/Yup/none   |
| Safety Score     | {N}/100        |
| Grade            | A/B/C/D/F      |

Score thresholds:
  90-100 = A (strict, zero any, schemas)
  80-89 = B (strict, few any, some schemas)
  60-79 = C (partial strict, moderate any)
  40-59 = D (no strict, many any)
  0-39 = F (widespread any, no validation)

Step 2: Strict Mode Configuration

// tsconfig.json — Maximum type safety
{
  "compilerOptions": {
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,
    "exactOptionalPropertyTypes": true
  }
}

Gradual Adoption

Phase 1 (Week 1-2): Foundation
  noImplicitAny + strictNullChecks
  + noImplicitReturns + useUnknownInCatchVariables
Phase 2 (Week 3-4): Functions
  strictFunctionTypes + strictBindCallApply
Phase 3 (Week 5-6): Full strict
  "strict": true + noUncheckedIndexedAccess
Phase 4 (Week 7-8): Schemas
  Add Zod at API boundaries

IF enabling flag produces >200 errors:
  enable one flag at a time, fix, commit, next