feat: added the type property for loading errors

Author: alexander-akait

src/CssLoadingRuntimeModule.js

@@ -67,10 +67,12 @@ module.exports = class CssLoadingRuntimeModule extends RuntimeModule {
             Template.indent(['resolve();']),
             '} else {',
             Template.indent([
-              'var request = event && event.target && event.target.href || fullhref;',
-              'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + request + ")");',
+              "var errorType = event && (event.type === 'load' ? 'missing' : event.type);",
+              'var realHref = event && event.target && event.target.href || fullhref;',
+              'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + realHref + ")");',
               'err.code = "CSS_CHUNK_LOAD_FAILED";',
-              'err.request = request;',
+              'err.type = errorType;',
+              'err.request = realHref;',
               'linkTag.parentNode.removeChild(linkTag)',
               'reject(err);',
             ]),

src/index.js

@@ -413,10 +413,12 @@ class MiniCssExtractPlugin {
                       Template.indent(['resolve();']),
                       '} else {',
                       Template.indent([
-                        'var request = event && event.target && event.target.href || fullhref;',
-                        'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + request + ")");',
+                        "var errorType = event && (event.type === 'load' ? 'missing' : event.type);",
+                        'var realHref = event && event.target && event.target.href || fullhref;',
+                        'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + realHref + ")");',
                         'err.code = "CSS_CHUNK_LOAD_FAILED";',
-                        'err.request = request;',
+                        'err.type = errorType;',
+                        'err.request = realHref;',
                         'delete installedCssChunks[chunkId]',
                         'linkTag.parentNode.removeChild(linkTag)',
                         'reject(err);',