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  1. 'use strict';
  2. var path = require('path');
  3. var findUp = require('find-up');
  4. module.exports = function (cwd) {
  5. return findUp('package.json', {cwd: cwd}).then(function (fp) {
  6. return fp ? path.dirname(fp) : null;
  7. });
  8. };
  9. module.exports.sync = function (cwd) {
  10. var fp = findUp.sync('package.json', {cwd: cwd});
  11. return fp ? path.dirname(fp) : null;
  12. };