chore: fully migrate to let/const

lib/collection.js

@@ -19,7 +19,7 @@ export function find(collection, matcher) {
 
   matcher = toMatcher(matcher);
 
-  var match;
+  let match;
 
   forEach(collection, function(val, key) {
     if (matcher(val, key)) {
@@ -46,7 +46,7 @@ export function findIndex(collection, matcher) {
 
   matcher = toMatcher(matcher);
 
-  var idx = isArray(collection) ? -1 : undefined;
+  let idx = isArray(collection) ? -1 : undefined;
 
   forEach(collection, function(val, key) {
     if (matcher(val, key)) {
@@ -203,7 +203,7 @@ export function some(collection, matcher) {
  */
 export function map(collection, fn) {
 
-  var result = [];
+  let result = [];
 
   forEach(collection, function(val, key) {
     result.push(fn(val, key));
@@ -262,9 +262,9 @@ export function groupBy(collection, extractor, grouped = {}) {
   extractor = toExtractor(extractor);
 
   forEach(collection, function(val) {
-    var discriminator = extractor(val) || '_';
+    let discriminator = extractor(val) || '_';
 
-    var group = grouped[discriminator];
+    let group = grouped[discriminator];
 
     if (!group) {
       group = grouped[discriminator] = [];
@@ -281,11 +281,11 @@ export function uniqueBy(extractor, ...collections) {
 
   extractor = toExtractor(extractor);
 
-  var grouped = {};
+  let grouped = {};
 
   forEach(collections, (c) => groupBy(c, extractor, grouped));
 
-  var result = map(grouped, function(val, key) {
+  let result = map(grouped, function(val, key) {
     return val[0];
   });
 
@@ -309,12 +309,12 @@ export function sortBy(collection, extractor) {
 
   extractor = toExtractor(extractor);
 
-  var sorted = [];
+  let sorted = [];
 
   forEach(collection, function(value, key) {
-    var disc = extractor(value, key);
+    let disc = extractor(value, key);
 
-    var entry = {
+    let entry = {
       d: disc,
       v: value
     };
@@ -343,7 +343,7 @@ export function sortBy(collection, extractor) {
  *
  * const matcher = matchPattern({ id: 1 });
  *
- * var element = find(elements, matcher);
+ * let element = find(elements, matcher);
  *
  * @param  {Object} pattern
  *

lib/fn.js

@@ -9,18 +9,18 @@
  */
 export function debounce(fn, timeout) {
 
-  var timer;
+  let timer;
 
-  var lastArgs;
-  var lastThis;
+  let lastArgs;
+  let lastThis;
 
-  var lastNow;
+  let lastNow;
 
   function fire() {
 
-    var now = Date.now();
+    let now = Date.now();
 
-    var scheduledDiff = (lastNow + timeout) - now;
+    let scheduledDiff = (lastNow + timeout) - now;
 
     if (scheduledDiff > 0) {
       return schedule(scheduledDiff);
@@ -60,7 +60,6 @@ export function debounce(fn, timeout) {
  * @return {Function} throttled function
  */
 export function throttle(fn, interval) {
-
   let throttling = false;
 
   return function(...args) {

lib/index.d.ts

@@ -294,7 +294,7 @@ export function sortBy<T>(collection: Collection<T>, extractor: Extractor<T, num
  *
  * const matcher = matchPattern({ id: 1 });
  *
- * var element = find(elements, matcher);
+ * let element = find(elements, matcher);
  *
  * @param  {Object} pattern
  *

lib/object.js

@@ -31,16 +31,16 @@ export function assign(target, ...others) {
  */
 export function set(target, path, value) {
 
-  var currentTarget = target;
+  let currentTarget = target;
 
   forEach(path, function(key, idx) {
 
     if (key === '__proto__') {
       throw new Error('illegal key: __proto__');
     }
 
-    var nextKey = path[idx + 1];
-    var nextTarget = currentTarget[key];
+    let nextKey = path[idx + 1];
+    let nextTarget = currentTarget[key];
 
     if (isDefined(nextKey) && isNil(nextTarget)) {
       nextTarget = currentTarget[key] = isNaN(+nextKey) ? {} : [];
@@ -70,7 +70,7 @@ export function set(target, path, value) {
  */
 export function get(target, path, defaultValue) {
 
-  var currentTarget = target;
+  let currentTarget = target;
 
   forEach(path, function(key) {
 
@@ -97,9 +97,9 @@ export function get(target, path, defaultValue) {
  */
 export function pick(target, properties) {
 
-  var result = {};
+  let result = {};
 
-  var obj = Object(target);
+  let obj = Object(target);
 
   forEach(properties, function(prop) {
 
@@ -121,9 +121,9 @@ export function pick(target, properties) {
  */
 export function omit(target, properties) {
 
-  var result = {};
+  let result = {};
 
-  var obj = Object(target);
+  let obj = Object(target);
 
   forEach(obj, function(prop, key) {
 
@@ -164,7 +164,7 @@ export function merge(target, ...sources) {
         return;
       }
 
-      var targetVal = target[key];
+      let targetVal = target[key];
 
       if (isObject(sourceVal)) {
 

test/array.spec.js

@@ -12,7 +12,7 @@ describe('array', function() {
     it('should flatten, one level deep', function() {
 
       // given
-      var arr = [
+      let arr = [
         [ 'A', 1 ],
         [ 'B' ],
         [ 'C', [ 1, 2, 3 ] ],