@graphql-tools/executor-http
Version:
A set of utils for faster development of GraphQL tools
67 lines (66 loc) • 2.61 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.handleMultipartMixedResponse = void 0;
const node_1 = require("meros/node");
const browser_1 = require("meros/browser");
const utils_1 = require("@graphql-tools/utils");
const merge_1 = require("dset/merge");
const addCancelToResponseStream_js_1 = require("./addCancelToResponseStream.js");
function isIncomingMessage(body) {
return body != null && typeof body === 'object' && 'pipe' in body;
}
async function handleMultipartMixedResponse(response, controller) {
const body = await response.body;
const contentType = response.headers.get('content-type') || '';
let asyncIterator;
if (isIncomingMessage(body)) {
// Meros/node expects headers as an object map with the content-type prop
body.headers = {
'content-type': contentType,
};
// And it expects `IncomingMessage` and `node-fetch` returns `body` as `Promise<PassThrough>`
asyncIterator = (await (0, node_1.meros)(body));
}
else {
// Nothing is needed for regular `Response`.
asyncIterator = (await (0, browser_1.meros)(response));
}
const executionResult = {};
function handleResult(result) {
if (result.path) {
const path = ['data', ...result.path];
executionResult.data = executionResult.data || {};
if (result.items) {
for (const item of result.items) {
(0, merge_1.dset)(executionResult, path, item);
}
}
if (result.data) {
(0, merge_1.dset)(executionResult, ['data', ...result.path], result.data);
}
}
else if (result.data) {
executionResult.data = executionResult.data || {};
Object.assign(executionResult.data, result.data);
}
if (result.errors) {
executionResult.errors = executionResult.errors || [];
executionResult.errors.push(...result.errors);
}
if (result.incremental) {
result.incremental.forEach(handleResult);
}
}
const resultStream = (0, utils_1.mapAsyncIterator)(asyncIterator, (part) => {
if (part.json) {
const chunk = part.body;
handleResult(chunk);
return executionResult;
}
});
if (controller) {
return (0, addCancelToResponseStream_js_1.addCancelToResponseStream)(resultStream, controller);
}
return resultStream;
}
exports.handleMultipartMixedResponse = handleMultipartMixedResponse;