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import React from 'dom-chef';
import elementReady from 'element-ready';
import * as pageDetect from 'github-url-detection';
import ChevronLeftIcon from 'octicon/chevron-left.svg';
import features from '.';
import GitHubURL from '../github-helpers/github-url';
import {groupButtons} from '../github-helpers/group-buttons';
import getDefaultBranch from '../github-helpers/get-default-branch';
import {getCurrentBranch} from '../github-helpers';
async function init(): Promise<false | void> {
const branchSelector = await elementReady<HTMLElement>('[data-hotkey="w"]');
// The branch selector is missing from History pages of files and folders (it only appears on the root)
if (!branchSelector) {
return false;
}
const defaultBranch = await getDefaultBranch();
const currentBranch = getCurrentBranch();
// Don't show the button if we’re already on the default branch
if (defaultBranch === currentBranch) {
return false;
}
const url = new GitHubURL(location.href);
if (pageDetect.isRepoRoot()) {
// The default branch of the root directory is just /user/repo/
url.route = '';
url.branch = '';
} else {
url.branch = defaultBranch;
}
const defaultLink = (
<a
className="btn tooltipped tooltipped-ne"
href={String(url)}
aria-label="See this view on the default branch"
>
<ChevronLeftIcon/>
</a>
);
if (branchSelector.classList.contains('btn-sm')) {
// Pre "Repository refresh" layout
defaultLink.classList.add('btn-sm');
}
branchSelector.parentElement!.before(defaultLink);
groupButtons([defaultLink, branchSelector.parentElement!]).classList.add('d-flex');
branchSelector.style.float = 'none'; // Pre "Repository refresh" layout
}
void features.add({
id: __filebasename,
description: 'Adds link the default branch on directory listings and files.',
screenshot: 'https://user-images.githubusercontent.com/1402241/71886648-2891dc00-316f-11ea-98d8-c5bf6c24d85c.png'
}, {
include: [
pageDetect.isRepoTree,
pageDetect.isSingleFile,
pageDetect.isRepoCommitList
],
exclude: [
pageDetect.isRepoHome
],
awaitDomReady: false,
init
});
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