added web vendorsHEADmaster

1 files changed, 83 insertions, 0 deletions

diff --git a/@linaria/packages/babel/src/utils/slugify.ts b/@linaria/packages/babel/src/utils/slugify.ts
new file mode 100644
index 0000000..39772ad
--- /dev/null
+++ b/@linaria/packages/babel/src/utils/slugify.ts
@@ -0,0 +1,83 @@
+/**
+ * This file contains a utility to generate hashes to be used as generated class names
+ */
+
+/* eslint-disable no-bitwise, default-case, no-param-reassign, prefer-destructuring */
+
+/**
+ * murmurhash2 via https://gist.github.com/raycmorgan/588423
+ */
+
+function doHash(str: string, seed: number = 0) {
+  const m = 0x5bd1e995;
+  const r = 24;
+  let h = seed ^ str.length;
+  let length = str.length;
+  let currentIndex = 0;
+
+  while (length >= 4) {
+    let k = UInt32(str, currentIndex);
+
+    k = Umul32(k, m);
+    k ^= k >>> r;
+    k = Umul32(k, m);
+
+    h = Umul32(h, m);
+    h ^= k;
+
+    currentIndex += 4;
+    length -= 4;
+  }
+
+  switch (length) {
+    case 3:
+      h ^= UInt16(str, currentIndex);
+      h ^= str.charCodeAt(currentIndex + 2) << 16;
+      h = Umul32(h, m);
+      break;
+
+    case 2:
+      h ^= UInt16(str, currentIndex);
+      h = Umul32(h, m);
+      break;
+
+    case 1:
+      h ^= str.charCodeAt(currentIndex);
+      h = Umul32(h, m);
+      break;
+  }
+
+  h ^= h >>> 13;
+  h = Umul32(h, m);
+  h ^= h >>> 15;
+
+  return h >>> 0;
+}
+
+function UInt32(str: string, pos: number) {
+  return (
+    str.charCodeAt(pos++) +
+    (str.charCodeAt(pos++) << 8) +
+    (str.charCodeAt(pos++) << 16) +
+    (str.charCodeAt(pos) << 24)
+  );
+}
+
+function UInt16(str: string, pos: number) {
+  return str.charCodeAt(pos++) + (str.charCodeAt(pos++) << 8);
+}
+
+function Umul32(n: number, m: number) {
+  n |= 0;
+  m |= 0;
+  const nlo = n & 0xffff;
+  const nhi = n >>> 16;
+  const res = (nlo * m + (((nhi * m) & 0xffff) << 16)) | 0;
+  return res;
+}
+
+function slugify(code: string) {
+  return doHash(code).toString(36);
+}
+
+export default slugify;