feat(vanilla): add testing infrastructure and tests (NK-wjnczv)

1 files changed, 29 insertions, 0 deletions

diff --git a/vanilla/node_modules/semver/internal/identifiers.js b/vanilla/node_modules/semver/internal/identifiers.js
new file mode 100644
index 0000000..d053472
--- /dev/null
+++ b/vanilla/node_modules/semver/internal/identifiers.js
@@ -0,0 +1,29 @@
+'use strict'
+
+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)
+
+  if (anum && bnum) {
+    a = +a
+    b = +b
+  }
+
+  return a === b ? 0
+    : (anum && !bnum) ? -1
+    : (bnum && !anum) ? 1
+    : a < b ? -1
+    : 1
+}
+
+const rcompareIdentifiers = (a, b) => compareIdentifiers(b, a)
+
+module.exports = {
+  compareIdentifiers,
+  rcompareIdentifiers,
+}