git-auto-badger/src/helpers/readCacheFile.js

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const findUp = require("find-up");
const fs = require("fs/promises");
const cache = new Map();
exports.readCacheFile = async function (fileName) {
  if (cache.has(fileName)) {
    return cache.get(fileName);
  }
  let path = await findUp(fileName);
  let fileContent = await fs.readFile(path);
  fileContent = fileContent.toString();
  cache.set(fileName, fileContent);
  return fileContent;
};