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

1 files changed, 45 insertions, 0 deletions

diff --git a/vanilla/node_modules/nanoid/index.js b/vanilla/node_modules/nanoid/index.js
new file mode 100644
index 0000000..9bc909d
--- /dev/null
+++ b/vanilla/node_modules/nanoid/index.js
@@ -0,0 +1,45 @@
+import crypto from 'crypto'
+import { urlAlphabet } from './url-alphabet/index.js'
+const POOL_SIZE_MULTIPLIER = 128
+let pool, poolOffset
+let fillPool = bytes => {
+  if (!pool || pool.length < bytes) {
+    pool = Buffer.allocUnsafe(bytes * POOL_SIZE_MULTIPLIER)
+    crypto.randomFillSync(pool)
+    poolOffset = 0
+  } else if (poolOffset + bytes > pool.length) {
+    crypto.randomFillSync(pool)
+    poolOffset = 0
+  }
+  poolOffset += bytes
+}
+let random = bytes => {
+  fillPool((bytes |= 0))
+  return pool.subarray(poolOffset - bytes, poolOffset)
+}
+let customRandom = (alphabet, defaultSize, getRandom) => {
+  let mask = (2 << (31 - Math.clz32((alphabet.length - 1) | 1))) - 1
+  let step = Math.ceil((1.6 * mask * defaultSize) / alphabet.length)
+  return (size = defaultSize) => {
+    let id = ''
+    while (true) {
+      let bytes = getRandom(step)
+      let i = step
+      while (i--) {
+        id += alphabet[bytes[i] & mask] || ''
+        if (id.length === size) return id
+      }
+    }
+  }
+}
+let customAlphabet = (alphabet, size = 21) =>
+  customRandom(alphabet, size, random)
+let nanoid = (size = 21) => {
+  fillPool((size |= 0))
+  let id = ''
+  for (let i = poolOffset - size; i < poolOffset; i++) {
+    id += urlAlphabet[pool[i] & 63]
+  }
+  return id
+}
+export { nanoid, customAlphabet, customRandom, urlAlphabet, random }