rename variables (#409)

* rename variables

* add comment to ambiguous variable

* rename variables

* add comments

* rename functions

1 files changed, 4 insertions, 4 deletions

diff --git a/ext/js/data/sandbox/string-util.js b/ext/js/data/sandbox/string-util.js
index 096ecffe..3d810ffb 100644
--- a/ext/js/data/sandbox/string-util.js
+++ b/ext/js/data/sandbox/string-util.js
@@ -35,10 +35,10 @@ export class StringUtil {
             result += char;
             if (++position >= textLength) { break; }
             const charCode = char.charCodeAt(0);
-            if (charCode >= 0xd800 && charCode < 0xdc00) {
+            if (charCode >= 0xd800 && charCode < 0xdc00) { // charCode is a high surrogate code
                 const char2 = text[position];
                 const charCode2 = char2.charCodeAt(0);
-                if (charCode2 >= 0xdc00 && charCode2 < 0xe000) {
+                if (charCode2 >= 0xdc00 && charCode2 < 0xe000) { // charCode2 is a low surrogate code
                     result += char2;
                     if (++position >= textLength) { break; }
                 }
@@ -61,10 +61,10 @@ export class StringUtil {
             result = char + result;
             if (--position < 0) { break; }
             const charCode = char.charCodeAt(0);
-            if (charCode >= 0xdc00 && charCode < 0xe000) {
+            if (charCode >= 0xdc00 && charCode < 0xe000) { // charCode is a low surrogate code
                 const char2 = text[position];
                 const charCode2 = char2.charCodeAt(0);
-                if (charCode2 >= 0xd800 && charCode2 < 0xdc00) {
+                if (charCode2 >= 0xd800 && charCode2 < 0xdc00) { // charCode2 is a high surrogate code
                     result = char2 + result;
                     if (--position < 0) { break; }
                 }