@graphql-tools/executor-http/esm/handleAsyncIterable.js

A set of utils for faster development of GraphQL tools

/* eslint-disable no-labels */
import { TextDecoder } from '@whatwg-node/fetch';
const textDecoder = new TextDecoder();
export async function* handleAsyncIterable(asyncIterable) {
    outer: for await (const chunk of asyncIterable) {
        const chunkStr = typeof chunk === 'string' ? chunk : textDecoder.decode(chunk, { stream: true });
        for (const part of chunkStr.split('\n\n')) {
            if (part) {
                const eventStr = part.split('event: ')[1];
                const dataStr = part.split('data: ')[1];
                if (eventStr === 'complete') {
                    break outer;
                }
                if (dataStr) {
                    const data = JSON.parse(dataStr);
                    yield data.payload || data;
                }
            }
        }
    }
}