ts
function mapAnyOfWithNullToOptionalParameters(schema: any): any {
    // Handle direct anyOf at current level
    if (schema.anyOf) {
        const nonNullSchema = schema.anyOf.find((item: any) => item.type !== 'null');
        return mapAnyOfWithNullToOptionalParameters(nonNullSchema || {});
    }
    
    // Process object properties
    if (schema.type === 'object' && schema.properties) {
        const newOptionalProperties: string[] = [];
        const processedProperties = Object.fromEntries(
            Object.entries(schema.properties).map(([key, value]) => {
                if (typeof value === 'object' && value && 'anyOf' in value) {
                    newOptionalProperties.push(key);
                }
                return [key, mapAnyOfWithNullToOptionalParameters(value)];
            })
        );
        
        return {
            ...schema,
            properties: processedProperties,
            required: schema.required?.filter((key: string) => !newOptionalProperties.includes(key)) || [],
        };
    }
    
    // Process array items
    if (schema.type === 'array' && schema.items) {
        return {
            ...schema,
            items: mapAnyOfWithNullToOptionalParameters(schema.items),
        };
    }
    
    return schema;
}

ts

async function callVAPIWithSchema(schema) {
    const vapiCompatibleSchema = mapAnyOfWithNullToOptionalParameters(schema);
    // Use vapiCompatibleSchema with VAPI
}