// SPDX-FileCopyrightText: Copyright Orangebot, Inc. and Medplum contributors
// SPDX-License-Identifier: Apache-2.0
/**
* Strips `@_nullFlavor` keys from objects recursively.
* Objects containing only `@_nullFlavor` become undefined and are filtered from arrays.
* @param obj - The object to sanitize.
* @returns The sanitized object with nullFlavor keys removed.
*/
export function sanitizeNullFlavors<T>(obj: T): T {
if (obj === null || obj === undefined) {
return obj;
}
if (Array.isArray(obj)) {
return obj.map((item) => sanitizeNullFlavors(item)).filter((item) => item !== undefined) as T;
}
if (typeof obj === 'object') {
const keys = Object.keys(obj).filter((key) => key !== '@_nullFlavor');
if (keys.length === 0) {
return undefined as T;
}
const result: Record<string, unknown> = {};
for (const key of keys) {
const value = sanitizeNullFlavors((obj as Record<string, unknown>)[key]);
if (value !== undefined) {
result[key] = value;
}
}
if (Object.keys(result).length === 0) {
return undefined as T;
}
return result as T;
}
return obj;
}
