CHANGELOG.md

@@ -1,6 +1,9 @@
 # Change Log
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## 2.1.11
+* Reduce size (by Anton Evzhakov).
+
 ## 2.1.10
 * Reduce size by 10% (by Anton Khlynovskiy).
 

README.md

@@ -5,7 +5,7 @@
 
 A tiny, secure, URL-friendly, unique string ID generator for JavaScript.
 
-* **Small.** 127 bytes (minified and gzipped). No dependencies.
+* **Small.** 119 bytes (minified and gzipped). No dependencies.
   [Size Limit] controls the size.
 * **Safe.** It uses cryptographically strong random APIs.
   Can be used in clusters.
@@ -63,7 +63,7 @@ There are three main differences between Nano ID and UUID v4:
 1. Nano ID uses a bigger alphabet, so a similar number of random bits
    are packed in just 21 symbols instead of 36.
 2. Nano ID code is 4 times less than `uuid/v4` package:
-   127 bytes instead of 435.
+   119 bytes instead of 435.
 3. Because of memory allocation tricks, Nano ID is 16% faster than UUID.
 
 

async/index.browser.js

@@ -4,39 +4,34 @@
 var crypto = self.crypto || self.msCrypto
 
 // This alphabet uses a-z A-Z 0-9 _- symbols.
-// Despite the fact the source code is quite long, its entropy
-// is low and there are lots of duplicates - just what compressors
-// like GZIP and Brotli likes the best.
-var i
-var url = '_-' + String.fromCharCode(
-  // ASCII codes for 0...9
-  i = 48, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
-
-  // ASCII codes for A...Z
-  i += 8, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
-
-  // ASCII codes for a...z
-  i += 7, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1
-)
+// Symbols are generated for smaller size.
+// -_zyxwvutsrqponmlkjihgfedcba9876543210ZYXWVUTSRQPONMLKJIHGFEDCBA
+var url = '-_'
+// Loop from 36 to 0 (from z to a and 9 to 0 in Base36).
+var i = 36
+while (i--) {
+  // 36 is radix. Number.prototype.toString(36) returns number
+  // in Base36 representation. Base36 is like hex, but it uses 0–9 and a-z.
+  url += i.toString(36)
+}
+// Loop from 36 to 10 (from Z to A in Base36).
+i = 36
+while (i-- - 10) {
+  url += i.toString(36).toUpperCase()
+}
 
 module.exports = function (size) {
-  size = size || 21
   var id = ''
-  var bytes = crypto.getRandomValues(new Uint8Array(size))
+  var bytes = crypto.getRandomValues(new Uint8Array(size || 21))
+  i = size || 21
+
   // Compact alternative for `for (var i = 0; i < size; i++)`
-  while (size--) {
+  while (i--) {
     // We can’t use bytes bigger than the alphabet. 63 is 00111111 bitmask.
     // This mask reduces random byte 0-255 to 0-63 values.
     // There is no need in `|| ''` and `* 1.6` hacks in here,
     // because bitmask trim bytes exact to alphabet size.
-    id += url[bytes[size] & 63]
+    id += url[bytes[i] & 63]
   }
   return Promise.resolve(id)
 }

index.browser.js

@@ -21,39 +21,34 @@ if (process.env.NODE_ENV !== 'production') {
 var crypto = self.crypto || self.msCrypto
 
 // This alphabet uses a-z A-Z 0-9 _- symbols.
-// Despite the fact the source code is quite long, its entropy
-// is low and there are lots of duplicates - just what compressors
-// like GZIP and Brotli likes the best.
-var i
-var url = '_-' + String.fromCharCode(
-  // ASCII codes for 0...9
-  i = 48, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
-
-  // ASCII codes for A...Z
-  i += 8, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
-
-  // ASCII codes for a...z
-  i += 7, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1
-)
+// Symbols are generated for smaller size.
+// -_zyxwvutsrqponmlkjihgfedcba9876543210ZYXWVUTSRQPONMLKJIHGFEDCBA
+var url = '-_'
+// Loop from 36 to 0 (from z to a and 9 to 0 in Base36).
+var i = 36
+while (i--) {
+  // 36 is radix. Number.prototype.toString(36) returns number
+  // in Base36 representation. Base36 is like hex, but it uses 0–9 and a-z.
+  url += i.toString(36)
+}
+// Loop from 36 to 10 (from Z to A in Base36).
+i = 36
+while (i-- - 10) {
+  url += i.toString(36).toUpperCase()
+}
 
 module.exports = function (size) {
-  size = size || 21
   var id = ''
-  var bytes = crypto.getRandomValues(new Uint8Array(size))
+  var bytes = crypto.getRandomValues(new Uint8Array(size || 21))
+  i = size || 21
+
   // Compact alternative for `for (var i = 0; i < size; i++)`
-  while (size--) {
+  while (i--) {
     // We can’t use bytes bigger than the alphabet. 63 is 00111111 bitmask.
     // This mask reduces random byte 0-255 to 0-63 values.
     // There is no need in `|| ''` and `* 1.6` hacks in here,
     // because bitmask trim bytes exact to alphabet size.
-    id += url[bytes[size] & 63]
+    id += url[bytes[i] & 63]
   }
   return id
 }

non-secure/index.js

@@ -1,25 +1,19 @@
 // This alphabet uses a-z A-Z 0-9 _- symbols.
-// Despite the fact the source code is quite long, its entropy
-// is low and there are lots of duplicates - just what compressors
-// like GZIP and Brotli likes the best.
-var i
-var url = '_-' + String.fromCharCode(
-  // ASCII codes for 0...9
-  i = 48, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
-
-  // ASCII codes for A...Z
-  i += 8, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
-
-  // ASCII codes for a...z
-  i += 7, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1
-)
+// Symbols are generated for smaller size.
+// -_zyxwvutsrqponmlkjihgfedcba9876543210ZYXWVUTSRQPONMLKJIHGFEDCBA
+var url = '-_'
+// Loop from 36 to 0 (from z to a and 9 to 0 in Base36).
+var i = 36
+while (i--) {
+  // 36 is radix. Number.prototype.toString(36) returns number
+  // in Base36 representation. Base36 is like hex, but it uses 0–9 and a-z.
+  url += i.toString(36)
+}
+// Loop from 36 to 10 (from Z to A in Base36).
+i = 36
+while (i-- - 10) {
+  url += i.toString(36).toUpperCase()
+}
 
 /**
  * Generate URL-friendly unique ID. This method use non-secure predictable
@@ -37,10 +31,10 @@ var url = '_-' + String.fromCharCode(
  * @function
  */
 module.exports = function (size) {
-  size = size || 21
   var id = ''
+  i = size || 21
   // Compact alternative for `for (var i = 0; i < size; i++)`
-  while (size--) {
+  while (i--) {
     // `| 0` is compact and faster alternative for `Math.floor()`
     id += url[Math.random() * 64 | 0]
   }

package.json

@@ -1,7 +1,7 @@
 {
   "name": "nanoid",
-  "version": "2.1.10",
-  "description": "A tiny (127 bytes), secure URL-friendly unique string ID generator",
+  "version": "2.1.11",
+  "description": "A tiny (119 bytes), secure URL-friendly unique string ID generator",
   "keywords": [
     "uuid",
     "random",
@@ -50,11 +50,11 @@
     "eslint-plugin-security": "^1.4.0",
     "eslint-plugin-standard": "^4.0.1",
     "eslint-plugin-unicorn": "^15.0.1",
-    "husky": "^4.2.0",
+    "husky": "^4.2.1",
     "jest": "^25.1.0",
-    "lint-staged": "^10.0.1",
+    "lint-staged": "^10.0.6",
     "parcel-bundler": "^1.12.4",
-    "rimraf": "^3.0.0",
+    "rimraf": "^3.0.1",
     "rndm": "^1.2.0",
     "secure-random-string": "^1.1.2",
     "shortid": "^2.2.15",
@@ -66,7 +66,7 @@
   "size-limit": [
     {
       "path": "index.js",
-      "limit": "127 B"
+      "limit": "119 B"
     },
     {
       "path": "generate.js",
@@ -78,15 +78,15 @@
     },
     {
       "path": "non-secure/index.js",
-      "limit": "89 B"
+      "limit": "82 B"
     },
     {
       "path": "non-secure/generate.js",
       "limit": "45 B"
     },
     {
       "path": "async/index.js",
-      "limit": "139 B"
+      "limit": "130 B"
     },
     {
       "path": "async/generate.js",

url.js

@@ -3,8 +3,6 @@
 // is low and there are lots of duplicates - just what compressors
 // like GZIP and Brotli likes the best.
 
-var i
-
 /**
  * URL safe symbols.
  *
@@ -15,20 +13,15 @@ var i
  * const url = require('nanoid/url')
  * generate(url, 10) //=> "Uakgb_J5m9"
  */
-module.exports = '_-' + String.fromCharCode(
-  // ASCII codes for 0...9
-  i = 48, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
-
-  // ASCII codes for A...Z
-  i += 8, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1,
 
-  // ASCII codes for a...z
-  i += 7, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1, i += 1,
-  i += 1, i += 1
-)
+// This alphabet uses a-z A-Z 0-9 _- symbols.
+// Symbols are generated for smaller size.
+// -_zyxwvutsrqponmlkjihgfedcba9876543210ZYXWVUTSRQPONMLKJIHGFEDCBA
+module.exports = '-_'
+var i = 36
+while (i--) {
+  // 36 is radix. Number.prototype.toString(36) returns number
+  // in Base36 representation. Base36 is like hex, but it uses 0–9 and a-z.
+  module.exports += i.toString(36)
+  i > 9 && (module.exports += i.toString(36).toUpperCase())
+}