feat: scaffold mvp shell and content runtime

js/content/validation/validate-continent.js

@@ -0,0 +1,47 @@
+function sameMembers(left, right) {
+  if (left.length !== right.length) {
+    return false
+  }
+
+  const rightSet = new Set(right)
+
+  return left.every((item) => rightSet.has(item))
+}
+
+export function validateContinent(continent, cityIds) {
+  const errors = []
+  const warnings = []
+
+  if (!continent.id) {
+    errors.push('Continent is missing id')
+  }
+
+  const hasRuntimeCityOrder = Array.isArray(continent.cityIds) && continent.cityIds.length > 0
+  const hasUnlockOrder = Array.isArray(continent.unlockOrder) && continent.unlockOrder.length > 0
+
+  if (hasRuntimeCityOrder && hasUnlockOrder && !sameMembers(continent.cityIds, continent.unlockOrder)) {
+    errors.push(`Continent "${continent.id}" cityIds and unlockOrder must contain the same cities`)
+  }
+
+  for (const cityId of continent.cityIds ?? []) {
+    if (!cityIds.has(cityId)) {
+      errors.push(`Continent "${continent.id}" references unknown city "${cityId}"`)
+    }
+  }
+
+  if (hasRuntimeCityOrder && !hasUnlockOrder) {
+    errors.push(`Continent "${continent.id}" must declare unlockOrder when cityIds are present`)
+  }
+
+  if (hasUnlockOrder && !hasRuntimeCityOrder) {
+    errors.push(`Continent "${continent.id}" must declare cityIds when unlockOrder is present`)
+  }
+
+  if (continent.bundle && !continent.bundle.packId) {
+    warnings.push(`Continent "${continent.id}" has no bundle packId`)
+  }
+
+  return { errors, warnings }
+}
+
+export default validateContinent