@visulima/string/dist/case/flip-case.mjs

Functions for manipulating strings.

import { stripVTControlCharacters } from 'node:util';
import { s as stripEmoji } from '../packem_shared/constants-CKNmLDBQ.mjs';
import LRUCache from '../packem_shared/LRUCache-udNErhWw.mjs';
import { g as generateCacheKey } from '../packem_shared/generate-cache-key-YSju5pj2.mjs';

var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
const defaultCacheStore = new LRUCache(1e3);
const flipCase = /* @__PURE__ */ __name((value, options) => {
  if (typeof value !== "string" || value.length === 0) {
    return "";
  }
  const shouldCache = options?.cache ?? false;
  const cacheStore = options?.cacheStore ?? defaultCacheStore;
  let cacheKey;
  if (shouldCache) {
    cacheKey = generateCacheKey(value, options);
  }
  if (shouldCache && cacheKey && cacheStore.has(cacheKey)) {
    return cacheStore.get(cacheKey);
  }
  let processedValue = value;
  if (options?.stripEmoji) {
    processedValue = stripEmoji(processedValue);
  }
  if (options?.stripAnsi) {
    processedValue = stripVTControlCharacters(processedValue);
  }
  let result = "";
  let index = 0;
  while (index < processedValue.length) {
    if (options?.handleAnsi && processedValue[index] === "\x1B") {
      let ansiSequence = processedValue[index];
      index++;
      while (index < processedValue.length && processedValue[index] !== "m") {
        ansiSequence += processedValue[index];
        index++;
      }
      if (index < processedValue.length) {
        ansiSequence += processedValue[index];
        result += ansiSequence;
      }
      index++;
      continue;
    }
    const char = processedValue[index];
    const lowerChar = options?.locale ? char.toLocaleLowerCase(options.locale) : char.toLowerCase();
    result += char === lowerChar ? options?.locale ? char.toLocaleUpperCase(options.locale) : char.toUpperCase() : lowerChar;
    index++;
  }
  if (shouldCache && cacheKey) {
    cacheStore.set(cacheKey, result);
  }
  return result;
}, "flipCase");

export { flipCase };