refactor: rename obj to target

obj was the object where we're setting data using the key. updateDataFromDocumentSnapshot and subscribeToDocument where both using obj, but I think that it was too generic and that target is better

Author: posva

src/index.js

@@ -39,7 +39,7 @@ function bindCollection ({
  subs[refKey] = {
  unbind: subscribeToDocument({
  ref,
- obj: innerObj,
+ target: innerObj,
  key: innerKey,
  depth,
  // TODO parentSubs
@@ -79,10 +79,10 @@ function bindCollection ({
  }, reject)
 }
 
-function updateDataFromDocumentSnapshot ({ snapshot, obj, key, subs, depth = 0, resolve }) {
+function updateDataFromDocumentSnapshot ({ snapshot, target, key, subs, depth = 0, resolve }) {
  // TODO extract refs
  const [data, refs] = extractRefs(snapshot)
- obj[key] = data
+ target[key] = data
  const refKeys = Object.keys(refs)
  if (!refKeys.length) return resolve()
  // TODO check if no ref is missing
@@ -96,11 +96,11 @@ function updateDataFromDocumentSnapshot ({ snapshot, obj, key, subs, depth = 0,
  sub.unbind()
  }
  // maybe wrap the unbind function to call unbind on every child
- const [innerObj, innerKey] = deepGetSplit(obj[key], refKey)
+ const [innerObj, innerKey] = deepGetSplit(target[key], refKey)
  subs[refKey] = {
  unbind: subscribeToDocument({
  ref,
- obj: innerObj,
+ target: innerObj,
  key: innerKey,
  depth,
  // TODO parentSubs
@@ -115,20 +115,20 @@ function updateDataFromDocumentSnapshot ({ snapshot, obj, key, subs, depth = 0,
  })
 }
 
-function subscribeToDocument ({ ref, obj, key, depth, resolve }) {
+function subscribeToDocument ({ ref, target, key, depth, resolve }) {
  const subs = Object.create(null)
  const unbind = ref.onSnapshot(doc => {
  if (doc.exists) {
  updateDataFromDocumentSnapshot({
  snapshot: createSnapshot(doc),
- obj,
+ target,
  key,
  subs,
  depth,
  resolve
  })
  } else {
- obj[key] = null
+ target[key] = null
  resolve()
  }
  })
@@ -160,7 +160,7 @@ function bindDocument ({
  if (doc.exists) {
  updateDataFromDocumentSnapshot({
  snapshot: createSnapshot(doc),
- obj: vm,
+ target: vm,
  key,
  subs,
  resolve