vendor tsgo

tools/tsgo/internal/stringutil/identifier.go

@@ -0,0 +1,17 @@
+package stringutil
+
+import "unicode"
+
+// IsUnicodeIdentifierStart reports whether ch may begin an ECMAScript
+// identifier, i.e. whether it has the Unicode ID_Start (or Other_ID_Start)
+// property. The range table is generated; see generate-unicode-data.mts.
+func IsUnicodeIdentifierStart(ch rune) bool {
+	return unicode.Is(unicodeESNextIdentifierStart, ch)
+}
+
+// IsUnicodeIdentifierPart reports whether ch may appear after the first
+// character of an ECMAScript identifier, i.e. whether it has the Unicode
+// ID_Continue (or Other_ID_Continue) property, which also includes ID_Start.
+func IsUnicodeIdentifierPart(ch rune) bool {
+	return unicode.Is(unicodeESNextIdentifierPart, ch)
+}