fix: fast path for compareIdentifiers when num

Author: H4ad

internal/identifiers.js

@@ -2,6 +2,10 @@
 
 const numeric = /^[0-9]+$/
 const compareIdentifiers = (a, b) => {
+  if (typeof a === 'number' && typeof b === 'number') {
+    return a === b ? 0 : a < b ? -1 : 1
+  }
+
   const anum = numeric.test(a)
   const bnum = numeric.test(b)
 

test/internal/identifiers.js

@@ -8,6 +8,7 @@ test('rcompareIdentifiers and compareIdentifiers', (t) => {
     ['1', '2'],
     ['alpha', 'beta'],
     ['0', 'beta'],
+    [1, 2],
   ]
   set.forEach((ab) => {
     const a = ab[0]
@@ -17,5 +18,7 @@ test('rcompareIdentifiers and compareIdentifiers', (t) => {
   })
   t.equal(compareIdentifiers('0', '0'), 0)
   t.equal(rcompareIdentifiers('0', '0'), 0)
+  t.equal(compareIdentifiers(1, 1), 0)
+  t.equal(rcompareIdentifiers(1, 1), 0)
   t.end()
 })