diff --git a/js/src/frontend/TokenStream.cpp b/js/src/frontend/TokenStream.cpp
index bac5ad32ecf1..0e70da2099f4 100644
--- a/js/src/frontend/TokenStream.cpp
+++ b/js/src/frontend/TokenStream.cpp
@@ -500,7 +500,7 @@ TokenStream::getChar(int32_t* cp)
             break;
         }
 
-        if (MOZ_UNLIKELY(c == LINE_SEPARATOR || c == PARA_SEPARATOR))
+        if (MOZ_UNLIKELY(c == unicode::LINE_SEPARATOR || c == unicode::PARA_SEPARATOR))
             break;
 
         *cp = c;
@@ -1328,7 +1328,7 @@ TokenStream::getTokenInternal(TokenKind* ttp, Modifier modifier)
     // early allows subsequent checking to be faster.
     if (MOZ_UNLIKELY(c >= 128)) {
         if (unicode::IsSpaceOrBOM2(c)) {
-            if (c == LINE_SEPARATOR || c == PARA_SEPARATOR) {
+            if (c == unicode::LINE_SEPARATOR || c == unicode::PARA_SEPARATOR) {
                 if (!updateLineInfoForEOL())
                     goto error;
 
diff --git a/js/src/frontend/TokenStream.h b/js/src/frontend/TokenStream.h
index f4fd04afe775..ad6bce3c53ec 100644
--- a/js/src/frontend/TokenStream.h
+++ b/js/src/frontend/TokenStream.h
@@ -29,6 +29,7 @@
 #include "vm/ErrorReporting.h"
 #include "vm/RegExpObject.h"
 #include "vm/String.h"
+#include "vm/Unicode.h"
 
 struct KeywordInfo;
 
@@ -268,12 +269,6 @@ class TokenStreamBase
   protected:
     TokenStreamBase(JSContext* cx, const ReadOnlyCompileOptions& options, StrictModeGetter* smg);
 
-    // Unicode separators that are treated as line terminators, in addition to \n, \r.
-    enum {
-        LINE_SEPARATOR = 0x2028,
-        PARA_SEPARATOR = 0x2029
-    };
-
     static const size_t ntokens = 4;                // 1 current + 2 lookahead, rounded
                                                     // to power of 2 to avoid divmod by 3
     static const unsigned maxLookahead = 2;
@@ -1011,7 +1006,10 @@ class MOZ_STACK_CLASS TokenStream final : public TokenStreamBase
 #endif
 
         static bool isRawEOLChar(int32_t c) {
-            return c == '\n' || c == '\r' || c == LINE_SEPARATOR || c == PARA_SEPARATOR;
+            return c == '\n' ||
+                   c == '\r' ||
+                   c == unicode::LINE_SEPARATOR ||
+                   c == unicode::PARA_SEPARATOR;
         }
 
         // Returns the offset of the next EOL, but stops once 'max' characters
diff --git a/js/src/vm/Unicode.h b/js/src/vm/Unicode.h
index 2980cb185885..5ef6c070d2c8 100644
--- a/js/src/vm/Unicode.h
+++ b/js/src/vm/Unicode.h
@@ -63,16 +63,18 @@ namespace CharFlag {
     const uint8_t UNICODE_ID_CONTINUE = UNICODE_ID_START + UNICODE_ID_CONTINUE_ONLY;
 }
 
-const char16_t NO_BREAK_SPACE = 0x00A0;
-const char16_t MICRO_SIGN = 0x00B5;
-const char16_t LATIN_SMALL_LETTER_SHARP_S = 0x00DF;
-const char16_t LATIN_SMALL_LETTER_Y_WITH_DIAERESIS = 0x00FF;
-const char16_t LATIN_CAPITAL_LETTER_I_WITH_DOT_ABOVE = 0x0130;
-const char16_t COMBINING_DOT_ABOVE = 0x0307;
-const char16_t GREEK_CAPITAL_LETTER_SIGMA = 0x03A3;
-const char16_t GREEK_SMALL_LETTER_FINAL_SIGMA = 0x03C2;
-const char16_t GREEK_SMALL_LETTER_SIGMA = 0x03C3;
-const char16_t BYTE_ORDER_MARK2 = 0xFFFE;
+constexpr char16_t NO_BREAK_SPACE = 0x00A0;
+constexpr char16_t MICRO_SIGN = 0x00B5;
+constexpr char16_t LATIN_SMALL_LETTER_SHARP_S = 0x00DF;
+constexpr char16_t LATIN_SMALL_LETTER_Y_WITH_DIAERESIS = 0x00FF;
+constexpr char16_t LATIN_CAPITAL_LETTER_I_WITH_DOT_ABOVE = 0x0130;
+constexpr char16_t LINE_SEPARATOR = 0x2028;
+constexpr char16_t PARA_SEPARATOR = 0x2029;
+constexpr char16_t COMBINING_DOT_ABOVE = 0x0307;
+constexpr char16_t GREEK_CAPITAL_LETTER_SIGMA = 0x03A3;
+constexpr char16_t GREEK_SMALL_LETTER_FINAL_SIGMA = 0x03C2;
+constexpr char16_t GREEK_SMALL_LETTER_SIGMA = 0x03C3;
+constexpr char16_t BYTE_ORDER_MARK2 = 0xFFFE;
 
 const char16_t LeadSurrogateMin = 0xD800;
 const char16_t LeadSurrogateMax = 0xDBFF;