Revert "fix(velum): rebalance brackets after pseudonymization"

This reverts commit bd3522d28a.

src/velum.ts

@@ -11,66 +11,6 @@ function escapeRegExp(value: string): string {
   return value.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
 }
 
-const BRACKET_PAIRS: Array<{ open: string; close: string }> = [
-  { open: "(", close: ")" },
-  { open: "[", close: "]" },
-  { open: "{", close: "}" },
-];
-
-function countChar(value: string, char: string): number {
-  let count = 0;
-  for (const c of value) if (c === char) count += 1;
-  return count;
-}
-
-function rebalanceBrackets(
-  text: string,
-  mapping: PlaceholderMapping,
-): { text: string; mapping: PlaceholderMapping } {
-  let resultText = text;
-  const resultMapping: PlaceholderMapping = {};
-
-  for (const [placeholder, entry] of Object.entries(mapping)) {
-    let original = entry.original;
-    let lead = "";
-    let trail = "";
-
-    let trimmed = true;
-    while (trimmed && original.length > 0) {
-      trimmed = false;
-      const pair = BRACKET_PAIRS.find((p) => original.startsWith(p.open));
-      if (pair && countChar(original, pair.open) > countChar(original, pair.close)) {
-        lead += original[0];
-        original = original.slice(1);
-        trimmed = true;
-      }
-    }
-
-    trimmed = true;
-    while (trimmed && original.length > 0) {
-      trimmed = false;
-      const pair = BRACKET_PAIRS.find((p) => original.endsWith(p.close));
-      if (pair && countChar(original, pair.close) > countChar(original, pair.open)) {
-        trail = original[original.length - 1] + trail;
-        original = original.slice(0, -1);
-        trimmed = true;
-      }
-    }
-
-    if (lead || trail) {
-      const escaped = escapeRegExp(placeholder);
-      resultText = resultText.replace(
-        new RegExp(escaped, "g"),
-        `${lead}${placeholder}${trail}`,
-      );
-    }
-
-    resultMapping[placeholder] = { ...entry, original };
-  }
-
-  return { text: resultText, mapping: resultMapping };
-}
-
 export function normalizePseudonymizeResponse(
   response: PseudonymizeResponse,
 ): PseudonymizeResponse {
@@ -94,12 +34,10 @@ export function normalizePseudonymizeResponse(
     text = text.replace(bareRegex, bracketed);
   }
 
-  const rebalanced = rebalanceBrackets(text, normalizedMapping);
-
   return {
     ...response,
-    pseudonymized_text: rebalanced.text,
+    pseudonymized_text: text,
-    mapping: rebalanced.mapping,
+    mapping: normalizedMapping,
   };
 }