schangxiang@126.com
2025-09-09 3d8966ba2c81e7e0365c8b123e861d18ee4f94f5
1
2
3
4
5
6
7
8
9
10
11
12
'use strict';
 
try {
  // If this doesn't throw, then arrow functions are supported natively.
  // Do not require babel (for speed).
  eval('var x = () => {};');
} catch (e) {
  require('babel-core/register')({
    only: /test.js$/,
    presets: ['es2015']
  });
}