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