Estructura inicial del proyecto

backend/node_modules/bson/src/utils/string_utils.ts

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+/**
+ * @internal
+ * Removes leading zeros and explicit plus from textual representation of a number.
+ */
+export function removeLeadingZerosAndExplicitPlus(str: string): string {
+  if (str === '') {
+    return str;
+  }
+
+  let startIndex = 0;
+
+  const isNegative = str[startIndex] === '-';
+  const isExplicitlyPositive = str[startIndex] === '+';
+
+  if (isExplicitlyPositive || isNegative) {
+    startIndex += 1;
+  }
+
+  let foundInsignificantZero = false;
+
+  for (; startIndex < str.length && str[startIndex] === '0'; ++startIndex) {
+    foundInsignificantZero = true;
+  }
+
+  if (!foundInsignificantZero) {
+    return isExplicitlyPositive ? str.slice(1) : str;
+  }
+
+  return `${isNegative ? '-' : ''}${str.length === startIndex ? '0' : str.slice(startIndex)}`;
+}
+
+/**
+ * @internal
+ * Returns false for an string that contains invalid characters for its radix, else returns the original string.
+ * @param str - The textual representation of the Long
+ * @param radix - The radix in which the text is written (2-36), defaults to 10
+ */
+export function validateStringCharacters(str: string, radix?: number): false | string {
+  radix = radix ?? 10;
+  const validCharacters = '0123456789abcdefghijklmnopqrstuvwxyz'.slice(0, radix);
+  // regex is case insensitive and checks that each character within the string is one of the validCharacters
+  const regex = new RegExp(`[^-+${validCharacters}]`, 'i');
+  return regex.test(str) ? false : str;
+}