fix(index): add code back and remove tag in failure

cwalten · cwalten · commit 0523dad4f838 · 2018-11-01T14:48:53.000-05:00
diff --git a/src/index.js b/src/index.js
@@ -334,6 +334,22 @@ class MiniCssExtractPlugin {
                 Template.indent([
                   `var href = ${linkHrefPath};`,
                   `var fullhref = ${mainTemplate.requireFn}.p + href;`,
+                  'var existingLinkTags = document.getElementsByTagName("link");',
+                  'for(var i = 0; i < existingLinkTags.length; i++) {',
+                  Template.indent([
+                    'var tag = existingLinkTags[i];',
+                    'var dataHref = tag.getAttribute("data-href") || tag.getAttribute("href");',
+                    'if(tag.rel === "stylesheet" && (dataHref === href || dataHref === fullhref)) return resolve();',
+                  ]),
+                  '}',
+                  'var existingStyleTags = document.getElementsByTagName("style");',
+                  'for(var i = 0; i < existingStyleTags.length; i++) {',
+                  Template.indent([
+                    'var tag = existingStyleTags[i];',
+                    'var dataHref = tag.getAttribute("data-href");',
+                    'if(dataHref === href || dataHref === fullhref) return resolve();',
+                  ]),
+                  '}',
                   'var linkTag = document.createElement("link");',
                   'linkTag.rel = "stylesheet";',
                   'linkTag.type = "text/css";',
@@ -344,6 +360,7 @@ class MiniCssExtractPlugin {
                     'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + request + ")");',
                     'err.request = request;',
                     'delete installedCssChunks[chunkId]',
+                    'linkTag.parentNode.removeChild(linkTag)',
                     'reject(err);',
                   ]),
                   '};',
