Inline InCB=Linker checking (#115)

Author: cometkim

.changeset/two-ideas-lay.md

@@ -0,0 +1,5 @@
+---
+"unicode-segmenter": patch
+---
+
+Inlined the InCB=Linker checking for Indic scripts

README.md

@@ -215,7 +215,7 @@ Since [Hermes doesn't support the `Intl.Segmenter` API](https://github.com/faceb
 
 | Name                         | Unicode® | ESM? |   Size    | Size (min) | Size (min+gzip) | Size (min+br) | Size (min+zstd) |
 |------------------------------|----------|------|----------:|-----------:|----------------:|--------------:|----------------:|
-| `unicode-segmenter/grapheme` |   16.0.0 |   ✔️ |    10,774 |      6,675 |           3,368 |         2,755 |           3,497 |
+| `unicode-segmenter/grapheme` |   16.0.0 |   ✔️ |    10,708 |      6,659 |           3,363 |         2,739 |           3,490 |
 | `graphemer`                  |   15.0.0 |   ✖️ ️|   410,435 |     95,104 |          15,752 |        10,660 |          15,911 |
 | `grapheme-splitter`          |   10.0.0 |   ✖️ |   122,254 |     23,682 |           7,852 |         4,802 |           6,753 |
 | `@formatjs/intl-segmenter`*  |   15.0.0 |   ✖️ |   603,510 |    369,673 |          72,273 |        49,530 |          68,027 |
@@ -231,7 +231,7 @@ Since [Hermes doesn't support the `Intl.Segmenter` API](https://github.com/faceb
 
 | Name                         | Bytecode size | Bytecode size (gzip)* |
 |------------------------------|--------------:|----------------------:|
-| `unicode-segmenter/grapheme` |        20,295 |                11,420 |
+| `unicode-segmenter/grapheme` |        20,259 |                11,417 |
 | `graphemer`                  |       134,089 |                31,766 |
 | `grapheme-splitter`          |        63,946 |                19,162 |
 

src/grapheme.js

@@ -167,7 +167,14 @@ export function* graphemeSegments(input) {
           consonant = isIndicConjunctConsonant(_hd);
         }
         if (consonant && catAfter === 3) {
-          linker = linker || isIndicConjunctLinker(cp);
+          linker = linker
+            || cp === 0x094D
+            || cp === 0x09CD
+            || cp === 0x0A4D
+            || cp === 0x0ACD
+            || cp === 0x0B4D
+            || cp === 0x0C4D
+            || cp === 0x0D4D;
         } else {
           linker = false;
         }
@@ -339,18 +346,3 @@ function cat(cp) {
 function isIndicConjunctConsonant(cp) {
   return findUnicodeRangeIndex(cp, consonant_ranges) >= 0;
 }
-
-/**
- * @param {number} cp
- * @return {boolean}
- */
-function isIndicConjunctLinker(cp) {
-  return (
-    cp === 2381 /* 0x094D */ ||
-    cp === 2509 /* 0x09CD */ ||
-    cp === 2765 /* 0x0ACD */ ||
-    cp === 2893 /* 0x0B4D */ ||
-    cp === 3149 /* 0x0C4D */ ||
-    cp === 3405 /* 0x0D4D */
-  );
-}