Example of transforming a GraphQL query into a Falcor query

falgql.js

const assert = require("assert")
const fs = require("fs")
const parser = require("graphql/language/parser")
const _ = require("lodash")

const write = (path, json) => fs.writeFileSync(path, JSON.stringify(json, null, 2))

const inputGraphQl = `
query {
  families(name: "Stark") {
    name
    members {
      firstName
    }
  }
}`

const expectedFalcor = [
  ["families", "Stark", "name"],
  ["families", "Stark", "members", "firstName"]
]

const parsedGraphQl = parser.parse(inputGraphQl)
write("parsed.json", parsedGraphQl)

let actualFalcor = []

_.cloneDeepWith(parsedGraphQl, value => {
  if (_.get(value, "kind") === "SelectionSet") {
    const currentPath = actualFalcor.shift() || []
    actualFalcor = actualFalcor.concat(_.map(value.selections, selection => {
      const newSegment = [selection.name.value]
      if (selection.arguments) _.each(selection.arguments, arg => newSegment.push(arg.value.value))
      return currentPath.concat(newSegment)
    }).reverse())
  }
})

console.log(actualFalcor)

assert.deepStrictEqual(actualFalcor, expectedFalcor)

package.json

{
  "name": "falgql",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "dependencies": {
    "graphql": "^0.6.0",
    "lodash": "^4.13.1"
  }
}

Cleaner version now here : https://github.com/antoinecellier/raccord/blob/master/client/src/translate/graphql-to-falcor.js