Check_schema_boundary

Field	Value
Type	Skill Resource
Source	~/.copilot/skills/frontend/scripts/check_schema_boundary.sh
Description	Not specified

Source Content

#!/usr/bin/env bash
# Check Zod usage follows the schema-at-boundary convention: every exported
# schema has a matching `z.infer<typeof X>` type export, and no schema uses
# `z.any()` (an escape hatch that defeats the point of validating boundaries).
#
# Usage: check_schema_boundary.sh <schema-file-or-dir>

set -uo pipefail
TARGET="${1:-.}"
fail=0

files=$(find "$TARGET" -name '*.ts' 2>/dev/null | xargs grep -l 'z\.object\|z\.union\|z\.discriminatedUnion' 2>/dev/null)
if [[ -z "$files" ]]; then
  echo "⚠️  no zod schema files found under $TARGET"
  exit 0
fi

for f in $files; do
  schemas=$(grep -oE 'export const [A-Za-z0-9_]+Schema' "$f" | awk '{print $3}')
  for s in $schemas; do
    typename="${s%Schema}"
    if grep -q "z\.infer<typeof ${s}>" "$f"; then
      echo "✅ $f: $s has a matching z.infer type export"
    else
      echo "❌ $f: $s has no \`z.infer<typeof $s>\` export (expected something like: export type $typename = z.infer<typeof $s>)"
      fail=1
    fi
  done

  if grep -q 'z\.any()' "$f"; then
    echo "❌ $f: uses z.any() — replace with a real shape or z.unknown() + a narrowing check"
    fail=1
  fi
done

exit "$fail"