fix bug

[0x0a0d]

dirty-json will crash if it is required more than 1 times (with difference paths that make require.cache ignore). When call Object.defineProperty directly to Array.property, it also crash too if there is any modules try to define these properties (peek & last) again.

• test structure

  ├── test.js # require both module1 & module2
  │   ├── module**1*
  │   │   ├── file*1-require-dirty-json
  │   │   ├── node_modules
  │   │   │   ├── dirty-json
  │   ├── module**2*
  │   │   ├── file*2-require-dirty-json
  │   │   ├── node_modules
  │   │   │   ├── dirty-json

  Error:

  Cannot redefine property: peek