js对象提取器，扩展自 json-mask 在此感谢！

npm install pick-mask

• a,b,c comma-separated list will select multiple fields
• a.b.c path will select a field from its parent
• a(b,c) sub-selection will select many fields from a parent
• a.*.c the star * wildcard will select all items in a field

• a@aa,b rename fields
• a|2-5 array interception
• /\\w+/ regular match

var pick = require('pick-mask')
pick({p: {a: 1, b: 2, aa: 11, bb: 22},z: 1}, 'p./^\\w$/,z')  // {p: {a: 1, b : 2}, z: 1}

more examples test

MIT