merge.md

function sum(a) {
  return a.x + 20;
}

sum({x: 10, y: 20});
sum({x: 10, y: 20});

sum; //:: fn(a: {x: number, y: number}) -> number

[
  {
    "id": "09449200-7aef-11e6-99f6-511be60d9464",
    "name": "sum",
    "addr": "/sum/",
    "kind": "f",
    "type": "number function(?)",
    "lineno": 1,
    "origin": {
      "!span": "9[0:9]-12[0:12]",
      "!type": "fn(a: ?) -> number",
      "!data": {
        "isConstructor": false,
        "type": "Function.prototype"
      }
    },
    "tagfile": "__DIR__/merge.js"
  },
  {
    "id": "09455550-7aef-11e6-99f6-511be60d9464",
    "name": "a",
    "addr": "/a/",
    "kind": "v",
    "lineno": 1,
    "namespace": "sum",
    "parent": "09449200-7aef-11e6-99f6-511be60d9464",
    "origin": {
      "!span": "13[0:13]-14[0:14]",
      "!data": {
        "isConstructor": false,
        "scoped": true,
        "isArg": true,
        "type": "Object.prototype"
      }
    },
    "tagfile": "__DIR__/merge.js"
  },
  {
    "id": "09457c60-7aef-11e6-99f6-511be60d9464",
    "name": "x",
    "addr": "/x/",
    "kind": "v",
    "type": "number",
    "lineno": 6,
    "namespace": "sum.a",
    "parent": "09455550-7aef-11e6-99f6-511be60d9464",
    "origin": {
      "!span": "66[5:5]-67[5:6]",
      "!type": "number",
      "!data": {
        "isConstructor": false,
        "scoped": false,
        "isArg": false,
        "type": "Number.prototype"
      }
    },
    "tagfile": "__DIR__/merge.js"
  },
  {
    "id": "09457c61-7aef-11e6-99f6-511be60d9464",
    "name": "y",
    "addr": "/y/",
    "kind": "v",
    "type": "number",
    "lineno": 6,
    "namespace": "sum.a",
    "parent": "09455550-7aef-11e6-99f6-511be60d9464",
    "origin": {
      "!span": "73[5:12]-74[5:13]",
      "!type": "number",
      "!data": {
        "isConstructor": false,
        "scoped": false,
        "isArg": false,
        "type": "Number.prototype"
      }
    },
    "tagfile": "__DIR__/merge.js"
  }
]

sum	__DIR__/merge.js	/sum/;"	f	lineno:1	type:number function(?)
a	__DIR__/merge.js	/a/;"	v	lineno:1	namespace:sum
x	__DIR__/merge.js	/x/;"	v	lineno:6	namespace:sum.a	type:number
y	__DIR__/merge.js	/y/;"	v	lineno:6	namespace:sum.a	type:number