nuxt-safe-runtime-config/dist/runtime/utils/transform.js

Validate Nuxt runtime config with Standard Schema at build time

export function toCamelCase(str) {
  return str.toLowerCase().replace(/_([a-z])/g, (_, c) => c.toUpperCase());
}
export function getPrefix(key) {
  const parts = key.split("_");
  return parts.length > 1 ? parts[0] : null;
}
function countPrefixes(keys) {
  const counts = /* @__PURE__ */ new Map();
  for (const key of keys) {
    const prefix = getPrefix(key);
    if (prefix)
      counts.set(prefix, (counts.get(prefix) || 0) + 1);
  }
  return counts;
}
function resolveConfigPath(key, prefixCounts) {
  if (key.startsWith("PUBLIC_"))
    return ["public", toCamelCase(key.slice(7))];
  if (key.startsWith("NUXT_PUBLIC_"))
    return ["public", toCamelCase(key.slice(12))];
  const prefix = getPrefix(key);
  if (prefix && (prefixCounts.get(prefix) || 0) >= 2) {
    return [toCamelCase(prefix), toCamelCase(key.slice(prefix.length + 1))];
  }
  return [toCamelCase(key)];
}
function assignPath(target, path, value) {
  if (path.length === 1) {
    target[path[0]] = value;
    return;
  }
  const [head, ...tail] = path;
  target[head] ??= {};
  assignPath(target[head], tail, value);
}
export function buildConfigStructureFromEnvKeys(keys) {
  const result = {};
  const prefixCounts = countPrefixes(keys);
  for (const key of keys) {
    const path = resolveConfigPath(key, prefixCounts);
    assignPath(result, path, true);
  }
  return result;
}
export function transformEnvVars(vars) {
  const result = {};
  const prefixCounts = countPrefixes(vars.map((v) => v.key));
  for (const { key, value } of vars) {
    const path = resolveConfigPath(key, prefixCounts);
    assignPath(result, path, value);
  }
  return result;
}