A userscript that removes the "+" and "-" from code diffs
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// ==UserScript==
// @name GitHub Remove Diff Signs
// @version 1.1.0
// @description A userscript that removes the "+" and "-" from code diffs
// @license https://creativecommons.org/licenses/by-sa/4.0/
// @namespace https://github.com/Mottie
// @include https://github.com/*
// @grant none
// @run-at document-idle
// @author Rob Garrison
// ==/UserScript==
(() => {
"use strict";
let debounce,
busy = false,
observers = [];
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 = () => {
let el, txt,
// max number of DOM insertions per loop
max = 0;
while ( max < 50 && 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(() => {
loop();
}, 200);
}
};
loop();
}
busy = false;
}
// GitHub pjax
document.addEventListener("pjax:end", init);
function removeObservers() {
observers.forEach(observer => {
if (observer) {
observer.disconnect();
}
});
observers = [];
}
function addObservers() {
// DOM targets - to detect GitHub dynamic ajax page loading
Array.from(
// Observe progressively loaded content
document.querySelectorAll(`
.js-diff-progressive-container,
.js-diff-load-container`
)
).forEach(target => {
const obsrvr = new MutationObserver(mutations => {
mutations.forEach(mutation => {
// preform checks before adding code wrap to minimize function calls
const tar = mutation.target;
if (!busy && tar && (
tar.classList.contains("js-diff-load-container") ||
tar.classList.contains("blob-wrapper")
)
) {
clearTimeout(debounce);
debounce = setTimeout(() => {
processDiff();
}, 500);
}
});
});
obsrvr.observe(target, {
childList: true,
subtree: true
});
observers.push(obsrvr);
});
}
function init() {
removeObservers();
if (document.querySelector("#files.diff-view")) {
addObservers();
processDiff();
}
}
init();
})();