@graphql-mesh/runtime/esm/utils.js

import { BREAK, visit } from 'graphql';
import { memoize1 } from '@graphql-tools/utils';
export const isStreamOperation = memoize1(function isStreamOperation(astNode) {
    let isStream = false;
    visit(astNode, {
        Field: {
            enter(node) {
                if (node.directives?.some(d => d.name.value === 'stream')) {
                    isStream = true;
                    return BREAK;
                }
                return undefined;
            },
        },
    });
    return isStream;
});