@graphql-tools/executor-http
Version:
A set of utils for faster development of GraphQL tools
32 lines (31 loc) • 1.42 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.handleEventStreamResponse = exports.isReadableStream = void 0;
const utils_1 = require("@graphql-tools/utils");
const handleAsyncIterable_js_1 = require("./handleAsyncIterable.js");
const addCancelToResponseStream_js_1 = require("./addCancelToResponseStream.js");
const handleReadableStream_js_1 = require("./handleReadableStream.js");
function isReadableStream(value) {
return value && typeof value.getReader === 'function';
}
exports.isReadableStream = isReadableStream;
function handleEventStreamResponse(response, controller) {
// node-fetch returns body as a promise so we need to resolve it
const body = response.body;
if (body) {
if (isReadableStream(body)) {
return (0, handleReadableStream_js_1.handleReadableStream)(body);
}
if ((0, utils_1.isAsyncIterable)(body)) {
const resultStream = (0, handleAsyncIterable_js_1.handleAsyncIterable)(body);
if (controller) {
return (0, addCancelToResponseStream_js_1.addCancelToResponseStream)(resultStream, controller);
}
else {
return resultStream;
}
}
}
throw new Error('Response body is expected to be a readable stream but got; ' + (0, utils_1.inspect)(body));
}
exports.handleEventStreamResponse = handleEventStreamResponse;