midflight, more progress on #247

mrodrig · Feb 23, 2024 · 46db726 · 46db726
1 parent c74972e
commit 46db726
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/json2csv.ts b/src/json2csv.ts
@@ -184,9 +184,10 @@ export const Json2Csv = function(options: FullJson2CsvOptions) {
         if (options.keys) {
             options.keys = keyStrings;
 
-            const matchedKeys = keyStrings.flatMap((userProvidedKey) => {
+            const detectedKeysMatchingProvidedKeys = keyStrings.flatMap((userProvidedKey) => {
                 const regex = new RegExp(`^${userProvidedKey}`);
                 const matchedKeys = [];
+
                 for (const detectedKey of processed) {
                     if (userProvidedKey === detectedKey || detectedKey.match(regex)) {
                         matchedKeys.push(detectedKey);
@@ -195,6 +196,8 @@ export const Json2Csv = function(options: FullJson2CsvOptions) {
                 return matchedKeys;
             });
 
+            const matchedKeys = Array.from(new Set(detectedKeysMatchingProvidedKeys));
+
             keyStrings.forEach((providedKey) => {
                 const regex = new RegExp(`^${providedKey}`);
                 const anyMatch = utils.anyKeysMatch(matchedKeys, regex);