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GitHub Remove Diff Signs

A userscript that removes the "+" and "-" from code diffs

当前为 2016-12-29 提交的版本，查看 最新版本。

// ==UserScript==
// @name          GitHub Remove Diff Signs
// @version       1.0.2
// @description   A userscript that removes the "+" and "-" from code diffs
// @license       https://creativecommons.org/licenses/by-sa/4.0/
// @namespace     http://github.com/Mottie
// @include       https://github.com/*
// @grant         none
// @run-at        document-idle
// @author        Rob Garrison
// ==/UserScript==
/* jshint unused:true, esnext:true */
(function() {
	"use strict";

	let targets,
		busy = false;

	function processDiff() {
		busy = true;
		if (document.querySelector(".highlight")) {
			let indx = 0,

				els = document.querySelectorAll(".blob-code-deletion .blob-code-inner, .blob-code-addition .blob-code-inner"),
				len = els.length,

				// target "+" and "-" at start
				regex = /^[+-]/,

				// loop with delay to allow user interaction
				loop = function() {
					let el, txt,
						// max number of DOM insertions per loop
						max = 0;
					while ( max < 20 && indx < len ) {
						if (indx >= len) {
							return;
						}
						el = els[indx];
						txt = el.childNodes[0].textContent;
						el.childNodes[0].textContent = txt.replace(regex, " ");
						max++;
						indx++;
					}
					if (indx < len) {
						setTimeout(function(){
							loop();
						}, 200);
					}
				};
			loop();
		}
		busy = false;
	}

	function init() {
		if (document.querySelector("#files.diff-view")) {
			processDiff();
		}
	}

	// DOM targets - to detect GitHub dynamic ajax page loading
	targets = document.querySelectorAll([
		"#js-repo-pjax-container",
		"#js-pjax-container"
	].join(","));

	// update TOC when content changes
	Array.prototype.forEach.call(targets, function(target) {
		new MutationObserver(function(mutations) {
			mutations.forEach(function(mutation) {
				// preform checks before adding code wrap to minimize function calls
				if (!busy && mutation.target === target) {
					init();
				}
			});
		}).observe(target, {
			childList: true,
			subtree: true
		});
	});

	init();

})();