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var Walker = require('node-source-walk');
 
/**
 * Extracts the dependencies of the supplied es6 module
 *
 * @param  {String|Object} src - File's content or AST
 * @return {String[]}
 */
module.exports = function(src) {
  var walker = new Walker();
 
  var dependencies = [];
 
  Iif (!src) { throw new Error('src not given'); }
 
  walker.walk(src, function(node) {
    switch (node.type) {
      case 'ImportDeclaration':
        Eif (node.source && node.source.value) {
          dependencies.push(node.source.value);
        }
        break;
      case 'ExportNamedDeclaration':
      case 'ExportAllDeclaration':
        if (node.source && node.source.value) {
          dependencies.push(node.source.value);
        }
        break;
      default:
        return;
    }
  });
 
  return dependencies;
};