adapter-idb: replace var with let/const

packages/node_modules/pouchdb-adapter-idb/src/allDocs.js

@@ -19,8 +19,8 @@ import getAll from './getAll';
 
 function allDocsKeys(keys, docStore, onBatch) {
   // It's not guaranteed to be returned in right order
-  var valuesBatch = new Array(keys.length);
-  var count = 0;
+  const valuesBatch = new Array(keys.length);
+  let count = 0;
   keys.forEach(function (key, index) {
     docStore.get(key).onsuccess = function (event) {
       if (event.target.result) {
@@ -66,16 +66,16 @@ function createKeyRange(start, end, inclusiveEnd, key, descending) {
 }
 
 function idbAllDocs(opts, idb, callback) {
-  var start = 'startkey' in opts ? opts.startkey : false;
-  var end = 'endkey' in opts ? opts.endkey : false;
-  var key = 'key' in opts ? opts.key : false;
-  var keys = 'keys' in opts ? opts.keys : false;
-  var skip = opts.skip || 0;
-  var limit = typeof opts.limit === 'number' ? opts.limit : -1;
-  var inclusiveEnd = opts.inclusive_end !== false;
-
-  var keyRange ;
-  var keyRangeError;
+  const start = 'startkey' in opts ? opts.startkey : false;
+  const end = 'endkey' in opts ? opts.endkey : false;
+  const key = 'key' in opts ? opts.key : false;
+  const keys = 'keys' in opts ? opts.keys : false;
+  let skip = opts.skip || 0;
+  const limit = typeof opts.limit === 'number' ? opts.limit : -1;
+  const inclusiveEnd = opts.inclusive_end !== false;
+
+  let keyRange;
+  let keyRangeError;
   if (!keys) {
     keyRange = createKeyRange(start, end, inclusiveEnd, key, opts.descending);
     keyRangeError = keyRange && keyRange.error;
@@ -88,25 +88,25 @@ function idbAllDocs(opts, idb, callback) {
     }
   }
 
-  var stores = [DOC_STORE, BY_SEQ_STORE, META_STORE];
+  const stores = [DOC_STORE, BY_SEQ_STORE, META_STORE];
 
   if (opts.attachments) {
     stores.push(ATTACH_STORE);
   }
-  var txnResult = openTransactionSafely(idb, stores, 'readonly');
+  const txnResult = openTransactionSafely(idb, stores, 'readonly');
   if (txnResult.error) {
     return callback(txnResult.error);
   }
-  var txn = txnResult.txn;
+  const txn = txnResult.txn;
   txn.oncomplete = onTxnComplete;
   txn.onabort = idbError(callback);
-  var docStore = txn.objectStore(DOC_STORE);
-  var seqStore = txn.objectStore(BY_SEQ_STORE);
-  var metaStore = txn.objectStore(META_STORE);
-  var docIdRevIndex = seqStore.index('_doc_id_rev');
-  var results = [];
-  var docCount;
-  var updateSeq;
+  const docStore = txn.objectStore(DOC_STORE);
+  const seqStore = txn.objectStore(BY_SEQ_STORE);
+  const metaStore = txn.objectStore(META_STORE);
+  const docIdRevIndex = seqStore.index('_doc_id_rev');
+  const results = [];
+  let docCount;
+  let updateSeq;
 
   metaStore.get(META_STORE).onsuccess = function (e) {
     docCount = e.target.result.docCount;
@@ -116,7 +116,7 @@ function idbAllDocs(opts, idb, callback) {
   if (opts.update_seq) {
     // get max updateSeq
     seqStore.openKeyCursor(null, 'prev').onsuccess = e => {
-      var cursor = e.target.result;
+      const cursor = e.target.result;
       if (cursor && cursor.key) {
         updateSeq = cursor.key;
       }
@@ -126,11 +126,11 @@ function idbAllDocs(opts, idb, callback) {
   // if the user specifies include_docs=true, then we don't
   // want to block the main cursor while we're fetching the doc
   function fetchDocAsynchronously(metadata, row, winningRev) {
-    var key = metadata.id + "::" + winningRev;
+    const key = metadata.id + "::" + winningRev;
     docIdRevIndex.get(key).onsuccess =  function onGetDoc(e) {
       row.doc = decodeDoc(e.target.result) || {};
       if (opts.conflicts) {
-        var conflicts = collectConflicts(metadata);
+        const conflicts = collectConflicts(metadata);
         if (conflicts.length) {
           row.doc._conflicts = conflicts;
         }
@@ -140,14 +140,14 @@ function idbAllDocs(opts, idb, callback) {
   }
 
   function allDocsInner(winningRev, metadata) {
-    var row = {
+    const row = {
       id: metadata.id,
       key: metadata.id,
       value: {
         rev: winningRev
       }
     };
-    var deleted = metadata.deleted;
+    const deleted = metadata.deleted;
     if (deleted) {
       if (keys) {
         results.push(row);
@@ -164,18 +164,18 @@ function idbAllDocs(opts, idb, callback) {
   }
 
   function processBatch(batchValues) {
-    for (var i = 0, len = batchValues.length; i < len; i++) {
+    for (let i = 0, len = batchValues.length; i < len; i++) {
       if (results.length === limit) {
         break;
       }
-      var batchValue = batchValues[i];
+      const batchValue = batchValues[i];
       if (batchValue.error && keys) {
         // key was not found with "keys" requests
         results.push(batchValue);
         continue;
       }
-      var metadata = decodeMetadata(batchValue);
-      var winningRev = metadata.winningRev;
+      const metadata = decodeMetadata(batchValue);
+      const winningRev = metadata.winningRev;
       allDocsInner(winningRev, metadata);
     }
   }
@@ -191,15 +191,15 @@ function idbAllDocs(opts, idb, callback) {
   }
 
   function onGetAll(e) {
-    var values = e.target.result;
+    let values = e.target.result;
     if (opts.descending) {
       values = values.reverse();
     }
     processBatch(values);
   }
 
   function onResultsReady() {
-    var returnVal = {
+    const returnVal = {
       total_rows: docCount,
       offset: opts.skip,
       rows: results