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frontend/node_modules/rc-upload/es/attr-accept.js

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+import warning from "rc-util/es/warning";
+export default (function (file, acceptedFiles) {
+  if (file && acceptedFiles) {
+    var acceptedFilesArray = Array.isArray(acceptedFiles) ? acceptedFiles : acceptedFiles.split(',');
+    var fileName = file.name || '';
+    var mimeType = file.type || '';
+    var baseMimeType = mimeType.replace(/\/.*$/, '');
+    return acceptedFilesArray.some(function (type) {
+      var validType = type.trim();
+      // This is something like */*,*  allow all files
+      if (/^\*(\/\*)?$/.test(type)) {
+        return true;
+      }
+
+      // like .jpg, .png
+      if (validType.charAt(0) === '.') {
+        var lowerFileName = fileName.toLowerCase();
+        var lowerType = validType.toLowerCase();
+        var affixList = [lowerType];
+        if (lowerType === '.jpg' || lowerType === '.jpeg') {
+          affixList = ['.jpg', '.jpeg'];
+        }
+        return affixList.some(function (affix) {
+          return lowerFileName.endsWith(affix);
+        });
+      }
+
+      // This is something like a image/* mime type
+      if (/\/\*$/.test(validType)) {
+        return baseMimeType === validType.replace(/\/.*$/, '');
+      }
+
+      // Full match
+      if (mimeType === validType) {
+        return true;
+      }
+
+      // Invalidate type should skip
+      if (/^\w+$/.test(validType)) {
+        warning(false, "Upload takes an invalidate 'accept' type '".concat(validType, "'.Skip for check."));
+        return true;
+      }
+      return false;
+    });
+  }
+  return true;
+});