fix: disable lcd text

closes #1

generateImage.js

@@ -2,6 +2,14 @@ const puppeteer = require("puppeteer");
 const merge = require("lodash.merge");
 const debug = require("./debug");
 
+const addArg = (opts, arg) => {
+  if (!Array.isArray(opts.launchOptions.args)) opts.launchOptions.args = [];
+
+  if (!opts.launchOptions.args.includes(arg)) {
+    opts.launchOptions.args.push(arg);
+  }
+};
+
 const takeScreenshot = async (html, opts) => {
   // Options see:
   // https://github.com/GoogleChrome/puppeteer/blob/master/docs/api.md#puppeteerlaunchoptions
@@ -42,6 +50,11 @@ const generateImage = async options => {
     opts.launchOptions.defaultViewport = options.viewport;
   }
 
+  // Disable "lcd text antialiasing" to avoid differences in the snapshots
+  // depending on the used monitor.
+  // See https://github.com/dferber90/jsdom-screenshot/issues/1
+  addArg(opts, "--disable-lcd-text");
+
   // Allows easy debugging by passing generateImage({ debug: true })
   if (opts.debug) debug(document);