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@ram-nad @gr2m @wolfy1339
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import isPlainObject from "is-plain-object";
import nodeFetch from "node-fetch";
import { RequestError } from "@octokit/request-error";
import { EndpointInterface } from "@octokit/types";
import getBuffer from "./get-buffer-response";
export default function fetchWrapper(
requestOptions: ReturnType<EndpointInterface> & { redirect?: string }
) {
if (
isPlainObject(requestOptions.body) ||
Array.isArray(requestOptions.body)
) {
requestOptions.body = JSON.stringify(requestOptions.body);
}
let headers: { [header: string]: string } = {};
let status: number;
let url: string;
const fetch: typeof nodeFetch =
(requestOptions.request && requestOptions.request.fetch) || nodeFetch;
return fetch(
requestOptions.url,
Object.assign(
{
method: requestOptions.method,
body: requestOptions.body,
headers: requestOptions.headers,
redirect: requestOptions.redirect
},
requestOptions.request
)
)
.then(response => {
url = response.url;
status = response.status;
for (const keyAndValue of response.headers) {
headers[keyAndValue[0]] = keyAndValue[1];
}
if (status === 204 || status === 205) {
return;
}
// GitHub API returns 200 for HEAD requsets
if (requestOptions.method === "HEAD") {
if (status < 400) {
return;
}
throw new RequestError(response.statusText, status, {
headers,
request: requestOptions
});
}
if (status === 304) {
throw new RequestError("Not modified", status, {
headers,
request: requestOptions
});
}
if (status >= 400) {
return response
.text()
.then(message => {
const error = new RequestError(message, status, {
headers,
request: requestOptions
});
try {
let responseBody = JSON.parse(error.message);
Object.assign(error, responseBody);
let errors = responseBody.errors;
// Assumption `errors` would always be in Array Fotmat
error.message =
error.message + ": " + errors.map(JSON.stringify).join(", ");
} catch (e) {
// ignore, see octokit/rest.js#684
}
throw error;
});
}
const contentType = response.headers.get("content-type");
if (/application\/json/.test(contentType!)) {
return response.json();
}
if (!contentType || /^text\/|charset=utf-8$/.test(contentType)) {
return response.text();
}
return getBuffer(response);
})
.then(data => {
return {
status,
url,
headers,
data
};
})
.catch(error => {
if (error instanceof RequestError) {
throw error;
}
throw new RequestError(error.message, 500, {
headers,
request: requestOptions
});
});
}
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