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index.js
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index.js
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'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
const VERSION = "2.11.0";
/**
* Some “list” response that can be paginated have a different response structure
*
* They have a `total_count` key in the response (search also has `incomplete_results`,
* /installation/repositories also has `repository_selection`), as well as a key with
* the list of the items which name varies from endpoint to endpoint.
*
* Octokit normalizes these responses so that paginated results are always returned following
* the same structure. One challenge is that if the list response has only one page, no Link
* header is provided, so this header alone is not sufficient to check wether a response is
* paginated or not.
*
* We check if a "total_count" key is present in the response data, but also make sure that
* a "url" property is not, as the "Get the combined status for a specific ref" endpoint would
* otherwise match: https://developer.github.com/v3/repos/statuses/#get-the-combined-status-for-a-specific-ref
*/
function normalizePaginatedListResponse(response) {
const responseNeedsNormalization = "total_count" in response.data && !("url" in response.data);
if (!responseNeedsNormalization) return response; // keep the additional properties intact as there is currently no other way
// to retrieve the same information.
const incompleteResults = response.data.incomplete_results;
const repositorySelection = response.data.repository_selection;
const totalCount = response.data.total_count;
delete response.data.incomplete_results;
delete response.data.repository_selection;
delete response.data.total_count;
const namespaceKey = Object.keys(response.data)[0];
const data = response.data[namespaceKey];
response.data = data;
if (typeof incompleteResults !== "undefined") {
response.data.incomplete_results = incompleteResults;
}
if (typeof repositorySelection !== "undefined") {
response.data.repository_selection = repositorySelection;
}
response.data.total_count = totalCount;
return response;
}
function iterator(octokit, route, parameters) {
const options = typeof route === "function" ? route.endpoint(parameters) : octokit.request.endpoint(route, parameters);
const requestMethod = typeof route === "function" ? route : octokit.request;
const method = options.method;
const headers = options.headers;
let url = options.url;
return {
[Symbol.asyncIterator]: () => ({
async next() {
if (!url) return {
done: true
};
const response = await requestMethod({
method,
url,
headers
});
const normalizedResponse = normalizePaginatedListResponse(response); // `response.headers.link` format:
// '<https://api.github.com/users/aseemk/followers?page=2>; rel="next", <https://api.github.com/users/aseemk/followers?page=2>; rel="last"'
// sets `url` to undefined if "next" URL is not present or `link` header is not set
url = ((normalizedResponse.headers.link || "").match(/<([^>]+)>;\s*rel="next"/) || [])[1];
return {
value: normalizedResponse
};
}
})
};
}
function paginate(octokit, route, parameters, mapFn) {
if (typeof parameters === "function") {
mapFn = parameters;
parameters = undefined;
}
return gather(octokit, [], iterator(octokit, route, parameters)[Symbol.asyncIterator](), mapFn);
}
function gather(octokit, results, iterator, mapFn) {
return iterator.next().then(result => {
if (result.done) {
return results;
}
let earlyExit = false;
function done() {
earlyExit = true;
}
results = results.concat(mapFn ? mapFn(result.value, done) : result.value.data);
if (earlyExit) {
return results;
}
return gather(octokit, results, iterator, mapFn);
});
}
const composePaginateRest = Object.assign(paginate, {
iterator
});
/**
* @param octokit Octokit instance
* @param options Options passed to Octokit constructor
*/
function paginateRest(octokit) {
return {
paginate: Object.assign(paginate.bind(null, octokit), {
iterator: iterator.bind(null, octokit)
})
};
}
paginateRest.VERSION = VERSION;
exports.composePaginateRest = composePaginateRest;
exports.paginateRest = paginateRest;
//# sourceMappingURL=index.js.map