diff --git a/.internal/baseMerge.js b/.internal/baseMerge.js
index 1f63eef72..1d09c8ccc 100644
--- a/.internal/baseMerge.js
+++ b/.internal/baseMerge.js
@@ -26,7 +26,7 @@ function baseMerge(object, source, srcIndex, customizer, stack) {
       baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack)
     }
     else {
-      const newValue = customizer
+      let newValue = customizer
         ? customizer(object[key], srcValue, `${ key }`, object, source, stack)
         : undefined
 
diff --git a/.internal/baseSlice.js b/.internal/baseSlice.js
index ed042ba90..07c43de4a 100644
--- a/.internal/baseSlice.js
+++ b/.internal/baseSlice.js
@@ -9,7 +9,7 @@
  */
 function baseSlice(array, start, end) {
   let index = -1,
-      length = array.length
+    length = array.length
 
   if (start < 0) {
     start = -start > length ? 0 : (length + start)
diff --git a/.internal/equalArrays.js b/.internal/equalArrays.js
index 9b3645821..3e649109d 100644
--- a/.internal/equalArrays.js
+++ b/.internal/equalArrays.js
@@ -60,11 +60,11 @@ function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
     // Recursively compare arrays (susceptible to call stack limits).
     if (seen) {
       if (!arraySome(other, (othValue, othIndex) => {
-            if (!cacheHas(seen, othIndex) &&
-                (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
-              return seen.push(othIndex)
-            }
-          })) {
+        if (!cacheHas(seen, othIndex) &&
+          (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
+          return seen.push(othIndex)
+        }
+      })) {
         result = false
         break
       }
diff --git a/.internal/unicodeSize.js b/.internal/unicodeSize.js
index f3877f054..e759e9b3f 100644
--- a/.internal/unicodeSize.js
+++ b/.internal/unicodeSize.js
@@ -21,7 +21,8 @@ const reOptMod = `${ rsModifier }?`
 const rsOptVar = `[${ rsVarRange }]?`
 const rsOptJoin = `(?:${ rsZWJ }(?:${ [rsNonAstral, rsRegional, rsSurrPair].join('|') })${ rsOptVar + reOptMod })*`
 const rsSeq = rsOptVar + reOptMod + rsOptJoin
-const rsSymbol = `(?:${ [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') })`
+const rsNonAstralCombo = `${ rsNonAstral }${ rsCombo }?`
+const rsSymbol = `(?:${ [rsNonAstralCombo, rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') })`
 
 /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
 const reUnicode = RegExp(`${ rsFitz }(?=${ rsFitz })|${ rsSymbol + rsSeq }`, 'g')
diff --git a/.internal/unicodeToArray.js b/.internal/unicodeToArray.js
index 308a8633b..02e3c9aa4 100644
--- a/.internal/unicodeToArray.js
+++ b/.internal/unicodeToArray.js
@@ -21,7 +21,8 @@ const reOptMod = `${ rsModifier }?`
 const rsOptVar = `[${ rsVarRange }]?`
 const rsOptJoin = `(?:${ rsZWJ }(?:${ [rsNonAstral, rsRegional, rsSurrPair].join('|') })${ rsOptVar + reOptMod })*`
 const rsSeq = rsOptVar + reOptMod + rsOptJoin
-const rsSymbol = `(?:${ [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') })`
+const rsNonAstralCombo = `${ rsNonAstral }${ rsCombo }?`
+const rsSymbol = `(?:${ [rsNonAstralCombo, rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') })`
 
 /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
 const reUnicode = RegExp(`${ rsFitz }(?=${ rsFitz })|${ rsSymbol + rsSeq }`, 'g')
diff --git a/.internal/unicodeWords.js b/.internal/unicodeWords.js
index c08756b89..232d1a699 100644
--- a/.internal/unicodeWords.js
+++ b/.internal/unicodeWords.js
@@ -47,7 +47,7 @@ const rsEmoji = `(?:${ [rsDingbat, rsRegional, rsSurrPair].join('|') })${ rsSeq
 const reUnicodeWord = RegExp([
   `${ rsUpper }?${ rsLower }+${ rsOptContrLower }(?=${ [rsBreak, rsUpper, '$'].join('|') })`,
   `${ rsMiscUpper }+${ rsOptContrUpper }(?=${ [rsBreak, rsUpper + rsMiscLower, '$'].join('|') })`,
-  `${ rsUpper }?${ rsMiscLower}+${ rsOptContrLower }`,
+  `${ rsUpper }?${ rsMiscLower }+${ rsOptContrLower }`,
   `${ rsUpper }+${ rsOptContrUpper }`,
   rsOrdUpper,
   rsOrdLower,