LibreChat/packages/mcp/src/utils.ts

30 lines
1.1 KiB
TypeScript

/**
* Normalizes a server name to match the pattern ^[a-zA-Z0-9_.-]+$
* This is required for Azure OpenAI models with Tool Calling
*/
export function normalizeServerName(serverName: string): string {
// Check if the server name already matches the pattern
if (/^[a-zA-Z0-9_.-]+$/.test(serverName)) {
return serverName;
}
/** Replace non-matching characters with underscores.
This preserves the general structure while ensuring compatibility.
Trims leading/trailing underscores
*/
const normalized = serverName.replace(/[^a-zA-Z0-9_.-]/g, '_').replace(/^_+|_+$/g, '');
// If the result is empty (e.g., all characters were non-ASCII and got trimmed),
// generate a fallback name to ensure we always have a valid function name
if (!normalized) {
/** Hash of the original name to ensure uniqueness */
let hash = 0;
for (let i = 0; i < serverName.length; i++) {
hash = (hash << 5) - hash + serverName.charCodeAt(i);
hash |= 0; // Convert to 32bit integer
}
return `server_${Math.abs(hash)}`;
}
return normalized;
}