Function mergeStrict

src/util/object.ts:6–22

(
  ...objects: Record<string, Value>[]
)

 * @returns The merged object
 */
export function mergeStrict<Value>(
  ...objects: Record<string, Value>[]
): Record<string, Value> {
  const returnValue: Record<string, Value> = {};

  objects.forEach((object: object) => {
    for (const [key, value] of Object.entries(object)) {
      if (returnValue.hasOwnProperty(key)) {
        throw new Error(`Found duplicate property ${key}`);
      }

      returnValue[key] = value;
    }
  });

  return returnValue;
}