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@BehindTheMath
Created October 4, 2017 20:34
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Save BehindTheMath/591c59ea91ee63dc92a39a6d8e80e1a8 to your computer and use it in GitHub Desktop.
Userscript that adds a button on Github to browse the current file on the tree of the last commit
// ==UserScript==
// @name Github Browse At Last Commit
// @namespace behindthemath.io
// @version 0.1
// @description Adds a button to browse the current file on the tree of the last commit
// @author BehindTheMath
// @match http*://*github.com/*/*/blob/*
// @grant none
// ==/UserScript==
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [0, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
(function () {
'use strict';
return __awaiter(this, void 0, void 0, function () {
var pathnameArray, owner, repo, branch, rest, path, requestUrl, headers, requestOptions, responseJson, sha, url, a, textNode;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
pathnameArray = window.location.pathname.split("/");
pathnameArray.shift();
owner = pathnameArray[0], repo = pathnameArray[1], branch = pathnameArray[3], rest = pathnameArray.slice(4);
path = rest.join("/");
requestUrl = "https://api.github.com/repos/" + pathnameArray[0] + "/" + pathnameArray[1] + "/commits/" + pathnameArray[3];
headers = new Headers();
headers.append("Accept", "application/vnd.github.v3+json");
requestOptions = {
method: "GET",
headers: headers
};
return [4 /*yield*/, fetch(requestUrl, requestOptions)];
case 1: return [4 /*yield*/, (_a.sent()).json()];
case 2:
responseJson = _a.sent();
sha = responseJson.sha;
if (branch != sha) {
url = "/" + owner + "/" + repo + "/blob/" + sha + "/" + path;
a = document.createElement("a");
a.href = url;
a.className = "btn btn-sm BtnGroup-item";
a.dataset.pjax = "";
textNode = document.createTextNode("Browse At Last Commit");
a.appendChild(textNode);
document.querySelector("div.file-navigation > div.BtnGroup.float-right").insertAdjacentElement("afterbegin", a);
}
return [2 /*return*/];
}
});
});
})();
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