@graphql-mesh/cli/esm/commands/serve/getGraphQLWSOpts.js

export function getGraphQLWSOptions(getBuiltMesh) {
    return {
        execute: (args) => args.rootValue.execute(args),
        subscribe: (args) => args.rootValue.subscribe(args),
        onSubscribe: async (ctx, _id, params) => {
            const { getEnveloped } = await getBuiltMesh();
            const { schema, execute, subscribe, contextFactory, parse, validate } = getEnveloped({
                ...ctx,
                req: ctx.extra.request,
                socket: ctx.extra.socket,
                params,
            });
            const args = {
                schema,
                operationName: params.operationName,
                document: parse(params.query),
                variableValues: params.variables,
                contextValue: await contextFactory(),
                rootValue: {
                    execute,
                    subscribe,
                },
            };
            const errors = validate(args.schema, args.document);
            if (errors.length)
                return errors;
            return args;
        },
    };
}