From d2b8d552db96943054bed8123eb4e1d1b0a893e9 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 20:07:49 -0700
Subject: [PATCH 01/13] simplify interface

---
 simplex-noise.js | 218 ++++++++++++++++++-----------------------------
 1 file changed, 83 insertions(+), 135 deletions(-)

diff --git a/simplex-noise.js b/simplex-noise.js
index 0aaa142..85c5e69 100644
--- a/simplex-noise.js
+++ b/simplex-noise.js
@@ -29,6 +29,56 @@ Better rank ordering method by Stefan Gustavson in 2012.
 (function() {
   'use strict';
 
+  var grad3 = new Float32Array([
+     1,  1,  0,
+    -1,  1,  0,
+     1, -1,  0,
+    -1, -1,  0,
+     1,  0,  1,
+    -1,  0,  1,
+     1,  0, -1,
+    -1,  0, -1,
+     0,  1,  1,
+     0, -1,  1,
+     0,  1, -1,
+     0, -1, -1
+  ]);
+
+  var grad4 = new Float32Array([
+     0,  1,  1,  1,
+     0,  1,  1, -1,
+     0,  1, -1,  1,
+     0,  1, -1, -1,
+     0, -1,  1,  1,
+     0, -1,  1, -1,
+     0, -1, -1,  1,
+     0, -1, -1, -1,
+     1,  0,  1,  1,
+     1,  0,  1, -1,
+     1,  0, -1,  1,
+     1,  0, -1, -1,
+    -1,  0,  1,  1,
+    -1,  0,  1, -1,
+    -1,  0, -1,  1,
+    -1,  0, -1, -1,
+     1,  1,  0,  1,
+     1,  1,  0, -1,
+     1, -1,  0,  1,
+     1, -1,  0, -1,
+    -1,  1,  0,  1,
+    -1,  1,  0, -1,
+    -1, -1,  0,  1,
+    -1, -1,  0, -1,
+     1,  1,  1,  0,
+     1,  1, -1,  0,
+     1, -1,  1,  0,
+     1, -1, -1,  0,
+    -1,  1,  1,  0,
+    -1,  1, -1,  0,
+    -1, -1,  1,  0,
+    -1, -1, -1,  0
+  ]);
+
   var F2 = 0.5 * (Math.sqrt(3.0) - 1.0);
   var G2 = (3.0 - Math.sqrt(3.0)) / 6.0;
   var F3 = 1.0 / 3.0;
@@ -36,65 +86,41 @@ Better rank ordering method by Stefan Gustavson in 2012.
   var F4 = (Math.sqrt(5.0) - 1.0) / 4.0;
   var G4 = (5.0 - Math.sqrt(5.0)) / 20.0;
 
-  function SimplexNoise(randomOrSeed) {
-    var random;
-    if (typeof randomOrSeed == 'function') {
-      random = randomOrSeed;
-    }
-    else if (randomOrSeed) {
-      random = alea(randomOrSeed);
-    } else {
-      random = Math.random;
-    }
-    this.p = buildPermutationTable(random);
-    this.perm = new Uint8Array(512);
-    this.permMod12 = new Uint8Array(512);
+  function simplex(random) {
+    var p = buildPermutationTable(random);
+    var perm = new Uint8Array(512);
+    var permMod12 = new Uint8Array(512);
     for (var i = 0; i < 512; i++) {
-      this.perm[i] = this.p[i & 255];
-      this.permMod12[i] = this.perm[i] % 12;
+      perm[i] = p[i & 255];
+      permMod12[i] = perm[i] % 12;
     }
 
-  }
-  SimplexNoise.prototype = {
-    grad3: new Float32Array([1, 1, 0,
-      -1, 1, 0,
-      1, -1, 0,
-
-      -1, -1, 0,
-      1, 0, 1,
-      -1, 0, 1,
+    return function noise(x, y, z, w) {
+      switch (arguments.length) {
+        case 1: return noise1D(x);
+        case 2: return noise2D(x, y);
+        case 3: return noise3D(x, y, z);
+        case 4: return noise4D(x, y, z, w);
+      }
+    }
 
-      1, 0, -1,
-      -1, 0, -1,
-      0, 1, 1,
+    function noise1D(x) {
+      return noise2D(x, 0)
+    }
 
-      0, -1, 1,
-      0, 1, -1,
-      0, -1, -1]),
-    grad4: new Float32Array([0, 1, 1, 1, 0, 1, 1, -1, 0, 1, -1, 1, 0, 1, -1, -1,
-      0, -1, 1, 1, 0, -1, 1, -1, 0, -1, -1, 1, 0, -1, -1, -1,
-      1, 0, 1, 1, 1, 0, 1, -1, 1, 0, -1, 1, 1, 0, -1, -1,
-      -1, 0, 1, 1, -1, 0, 1, -1, -1, 0, -1, 1, -1, 0, -1, -1,
-      1, 1, 0, 1, 1, 1, 0, -1, 1, -1, 0, 1, 1, -1, 0, -1,
-      -1, 1, 0, 1, -1, 1, 0, -1, -1, -1, 0, 1, -1, -1, 0, -1,
-      1, 1, 1, 0, 1, 1, -1, 0, 1, -1, 1, 0, 1, -1, -1, 0,
-      -1, 1, 1, 0, -1, 1, -1, 0, -1, -1, 1, 0, -1, -1, -1, 0]),
-    noise2D: function(xin, yin) {
-      var permMod12 = this.permMod12;
-      var perm = this.perm;
-      var grad3 = this.grad3;
+    function noise2D(x, y) {
       var n0 = 0; // Noise contributions from the three corners
       var n1 = 0;
       var n2 = 0;
       // Skew the input space to determine which simplex cell we're in
-      var s = (xin + yin) * F2; // Hairy factor for 2D
-      var i = Math.floor(xin + s);
-      var j = Math.floor(yin + s);
+      var s = (x + y) * F2; // Hairy factor for 2D
+      var i = Math.floor(x + s);
+      var j = Math.floor(y + s);
       var t = (i + j) * G2;
       var X0 = i - t; // Unskew the cell origin back to (x,y) space
       var Y0 = j - t;
-      var x0 = xin - X0; // The x,y distances from the cell origin
-      var y0 = yin - Y0;
+      var x0 = x - X0; // The x,y distances from the cell origin
+      var y0 = y - Y0;
       // For the 2D case, the simplex shape is an equilateral triangle.
       // Determine which simplex we are in.
       var i1, j1; // Offsets for second (middle) corner of simplex in (i,j) coords
@@ -138,24 +164,21 @@ Better rank ordering method by Stefan Gustavson in 2012.
       // Add contributions from each corner to get the final noise value.
       // The result is scaled to return values in the interval [-1,1].
       return 70.0 * (n0 + n1 + n2);
-    },
-    // 3D simplex noise
-    noise3D: function(xin, yin, zin) {
-      var permMod12 = this.permMod12;
-      var perm = this.perm;
-      var grad3 = this.grad3;
+    }
+
+    function noise3D(x, y, z) {
       var n0, n1, n2, n3; // Noise contributions from the four corners
       // Skew the input space to determine which simplex cell we're in
-      var s = (xin + yin + zin) * F3; // Very nice and simple skew factor for 3D
-      var i = Math.floor(xin + s);
-      var j = Math.floor(yin + s);
+      var s = (x + y + zin) * F3; // Very nice and simple skew factor for 3D
+      var i = Math.floor(x + s);
+      var j = Math.floor(y + s);
       var k = Math.floor(zin + s);
       var t = (i + j + k) * G3;
       var X0 = i - t; // Unskew the cell origin back to (x,y,z) space
       var Y0 = j - t;
       var Z0 = k - t;
-      var x0 = xin - X0; // The x,y,z distances from the cell origin
-      var y0 = yin - Y0;
+      var x0 = x - X0; // The x,y,z distances from the cell origin
+      var y0 = y - Y0;
       var z0 = zin - Z0;
       // For the 3D case, the simplex shape is a slightly irregular tetrahedron.
       // Determine which simplex we are in.
@@ -262,12 +285,9 @@ Better rank ordering method by Stefan Gustavson in 2012.
       // Add contributions from each corner to get the final noise value.
       // The result is scaled to stay just inside [-1,1]
       return 32.0 * (n0 + n1 + n2 + n3);
-    },
-    // 4D simplex noise, better simplex rank ordering method 2012-03-09
-    noise4D: function(x, y, z, w) {
-      var perm = this.perm;
-      var grad4 = this.grad4;
+    }
 
+    function noise4D(x, y, z, w) {
       var n0, n1, n2, n3, n4; // Noise contributions from the five corners
       // Skew the (x,y,z,w) space to determine which cell of 24 simplices we're in
       var s = (x + y + z + w) * F4; // Factor for 4D skewing
@@ -388,78 +408,6 @@ Better rank ordering method by Stefan Gustavson in 2012.
       // Sum up and scale the result to cover the range [-1,1]
       return 27.0 * (n0 + n1 + n2 + n3 + n4);
     }
-  };
-
-  function buildPermutationTable(random) {
-    var i;
-    var p = new Uint8Array(256);
-    for (i = 0; i < 256; i++) {
-      p[i] = i;
-    }
-    for (i = 0; i < 255; i++) {
-      var r = i + ~~(random() * (256 - i));
-      var aux = p[i];
-      p[i] = p[r];
-      p[r] = aux;
-    }
-    return p;
-  }
-  SimplexNoise._buildPermutationTable = buildPermutationTable;
-
-  /*
-  The ALEA PRNG and masher code used by simplex-noise.js
-  is based on code by Johannes Baagøe, modified by Jonas Wagner.
-  See alea.md for the full license.
-  */
-  function alea() {
-    var s0 = 0;
-    var s1 = 0;
-    var s2 = 0;
-    var c = 1;
-
-    var mash = masher();
-    s0 = mash(' ');
-    s1 = mash(' ');
-    s2 = mash(' ');
-
-    for (var i = 0; i < arguments.length; i++) {
-      s0 -= mash(arguments[i]);
-      if (s0 < 0) {
-        s0 += 1;
-      }
-      s1 -= mash(arguments[i]);
-      if (s1 < 0) {
-        s1 += 1;
-      }
-      s2 -= mash(arguments[i]);
-      if (s2 < 0) {
-        s2 += 1;
-      }
-    }
-    mash = null;
-    return function() {
-      var t = 2091639 * s0 + c * 2.3283064365386963e-10; // 2^-32
-      s0 = s1;
-      s1 = s2;
-      return s2 = t - (c = t | 0);
-    };
-  }
-  function masher() {
-    var n = 0xefc8249d;
-    return function(data) {
-      data = data.toString();
-      for (var i = 0; i < data.length; i++) {
-        n += data.charCodeAt(i);
-        var h = 0.02519603282416938 * n;
-        n = h >>> 0;
-        h -= n;
-        h *= n;
-        n = h >>> 0;
-        h -= n;
-        n += h * 0x100000000; // 2^32
-      }
-      return (n >>> 0) * 2.3283064365386963e-10; // 2^-32
-    };
   }
 
   // amd

From 9d8d203d8351c69d562dc14ca4e6007224a5102b Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 20:48:30 -0700
Subject: [PATCH 02/13] evaluate tests

---
 shrinkwrap.yaml            | 1378 ++++++++++++++++++++++++++++++++++++
 simplex-noise.js           |  130 ++--
 test/simplex-noise-test.js |  120 +---
 3 files changed, 1486 insertions(+), 142 deletions(-)
 create mode 100644 shrinkwrap.yaml

diff --git a/shrinkwrap.yaml b/shrinkwrap.yaml
new file mode 100644
index 0000000..c38e581
--- /dev/null
+++ b/shrinkwrap.yaml
@@ -0,0 +1,1378 @@
+devDependencies:
+  alea: 0.0.9
+  benchmark: 2.1.4
+  chai: 4.1.2
+  eslint: 4.18.2
+  eslint-config-standard: 11.0.0
+  eslint-plugin-import: 2.9.0
+  eslint-plugin-node: 6.0.1
+  eslint-plugin-promise: 3.7.0
+  eslint-plugin-standard: 3.0.1
+  mocha: 5.0.4
+packages:
+  /acorn-jsx/3.0.1:
+    dependencies:
+      acorn: 3.3.0
+    dev: true
+    resolution:
+      integrity: sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=
+  /acorn/3.3.0:
+    dev: true
+    engines:
+      node: '>=0.4.0'
+    resolution:
+      integrity: sha1-ReN/s56No/JbruP/U2niu18iAXo=
+  /acorn/5.5.3:
+    dev: true
+    engines:
+      node: '>=0.4.0'
+    resolution:
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+  /ajv-keywords/2.1.1/ajv@5.5.2:
+    dependencies:
+      ajv: 5.5.2
+    dev: true
+    id: registry.npmjs.org/ajv-keywords/2.1.1
+    peerDependencies:
+      ajv: ^5.0.0
+    resolution:
+      integrity: sha1-YXmX/F9gV2iUxDX5QNgZ4TW4B2I=
+  /ajv/5.5.2:
+    dependencies:
+      co: 4.6.0
+      fast-deep-equal: 1.1.0
+      fast-json-stable-stringify: 2.0.0
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+    dev: true
+    resolution:
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+    dev: true
+    engines:
+      node: '>=4'
+    resolution:
+      integrity: sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
+  /typedarray/0.0.6:
+    dev: true
+    resolution:
+      integrity: sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
+  /util-deprecate/1.0.2:
+    dev: true
+    resolution:
+      integrity: sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
+  /validate-npm-package-license/3.0.3:
+    dependencies:
+      spdx-correct: 3.0.0
+      spdx-expression-parse: 3.0.0
+    dev: true
+    resolution:
+      integrity: sha512-63ZOUnL4SIXj4L0NixR3L1lcjO38crAbgrTpl28t8jjrfuiOBL5Iygm+60qPs/KsZGzPNg6Smnc/oY16QTjF0g==
+  /which/1.3.0:
+    dependencies:
+      isexe: 2.0.0
+    dev: true
+    resolution:
+      integrity: sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==
+  /wordwrap/1.0.0:
+    dev: true
+    resolution:
+      integrity: sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=
+  /wrappy/1.0.2:
+    dev: true
+    resolution:
+      integrity: sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
+  /write/0.2.1:
+    dependencies:
+      mkdirp: 0.5.1
+    dev: true
+    engines:
+      node: '>=0.10.0'
+    resolution:
+      integrity: sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=
+  /yallist/2.1.2:
+    dev: true
+    resolution:
+      integrity: sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=
+registry: 'https://registry.npmjs.org/'
+shrinkwrapMinorVersion: 4
+shrinkwrapVersion: 3
+specifiers:
+  alea: 0.0.9
+  benchmark: ~2.1.4
+  chai: ^4.1.2
+  eslint: ^4.17.0
+  eslint-config-standard: ^11.0.0-beta.0
+  eslint-plugin-import: ^2.8.0
+  eslint-plugin-node: ^6.0.0
+  eslint-plugin-promise: ^3.6.0
+  eslint-plugin-standard: ^3.0.1
+  mocha: ^5.0.0
diff --git a/simplex-noise.js b/simplex-noise.js
index 85c5e69..7a10a69 100644
--- a/simplex-noise.js
+++ b/simplex-noise.js
@@ -30,53 +30,53 @@ Better rank ordering method by Stefan Gustavson in 2012.
   'use strict';
 
   var grad3 = new Float32Array([
-     1,  1,  0,
-    -1,  1,  0,
-     1, -1,  0,
-    -1, -1,  0,
-     1,  0,  1,
-    -1,  0,  1,
-     1,  0, -1,
-    -1,  0, -1,
-     0,  1,  1,
-     0, -1,  1,
-     0,  1, -1,
-     0, -1, -1
+    1, 1, 0,
+    -1, 1, 0,
+    1, -1, 0,
+    -1, -1, 0,
+    1, 0, 1,
+    -1, 0, 1,
+    1, 0, -1,
+    -1, 0, -1,
+    0, 1, 1,
+    0, -1, 1,
+    0, 1, -1,
+    0, -1, -1
   ]);
 
   var grad4 = new Float32Array([
-     0,  1,  1,  1,
-     0,  1,  1, -1,
-     0,  1, -1,  1,
-     0,  1, -1, -1,
-     0, -1,  1,  1,
-     0, -1,  1, -1,
-     0, -1, -1,  1,
-     0, -1, -1, -1,
-     1,  0,  1,  1,
-     1,  0,  1, -1,
-     1,  0, -1,  1,
-     1,  0, -1, -1,
-    -1,  0,  1,  1,
-    -1,  0,  1, -1,
-    -1,  0, -1,  1,
-    -1,  0, -1, -1,
-     1,  1,  0,  1,
-     1,  1,  0, -1,
-     1, -1,  0,  1,
-     1, -1,  0, -1,
-    -1,  1,  0,  1,
-    -1,  1,  0, -1,
-    -1, -1,  0,  1,
-    -1, -1,  0, -1,
-     1,  1,  1,  0,
-     1,  1, -1,  0,
-     1, -1,  1,  0,
-     1, -1, -1,  0,
-    -1,  1,  1,  0,
-    -1,  1, -1,  0,
-    -1, -1,  1,  0,
-    -1, -1, -1,  0
+    0, 1, 1, 1,
+    0, 1, 1, -1,
+    0, 1, -1, 1,
+    0, 1, -1, -1,
+    0, -1, 1, 1,
+    0, -1, 1, -1,
+    0, -1, -1, 1,
+    0, -1, -1, -1,
+    1, 0, 1, 1,
+    1, 0, 1, -1,
+    1, 0, -1, 1,
+    1, 0, -1, -1,
+    -1, 0, 1, 1,
+    -1, 0, 1, -1,
+    -1, 0, -1, 1,
+    -1, 0, -1, -1,
+    1, 1, 0, 1,
+    1, 1, 0, -1,
+    1, -1, 0, 1,
+    1, -1, 0, -1,
+    -1, 1, 0, 1,
+    -1, 1, 0, -1,
+    -1, -1, 0, 1,
+    -1, -1, 0, -1,
+    1, 1, 1, 0,
+    1, 1, -1, 0,
+    1, -1, 1, 0,
+    1, -1, -1, 0,
+    -1, 1, 1, 0,
+    -1, 1, -1, 0,
+    -1, -1, 1, 0,
+    -1, -1, -1, 0
   ]);
 
   var F2 = 0.5 * (Math.sqrt(3.0) - 1.0);
@@ -102,10 +102,10 @@ Better rank ordering method by Stefan Gustavson in 2012.
         case 3: return noise3D(x, y, z);
         case 4: return noise4D(x, y, z, w);
       }
-    }
+    };
 
     function noise1D(x) {
-      return noise2D(x, 0)
+      return noise2D(x, 0);
     }
 
     function noise2D(x, y) {
@@ -169,17 +169,17 @@ Better rank ordering method by Stefan Gustavson in 2012.
     function noise3D(x, y, z) {
       var n0, n1, n2, n3; // Noise contributions from the four corners
       // Skew the input space to determine which simplex cell we're in
-      var s = (x + y + zin) * F3; // Very nice and simple skew factor for 3D
+      var s = (x + y + z) * F3; // Very nice and simple skew factor for 3D
       var i = Math.floor(x + s);
       var j = Math.floor(y + s);
-      var k = Math.floor(zin + s);
+      var k = Math.floor(z + s);
       var t = (i + j + k) * G3;
       var X0 = i - t; // Unskew the cell origin back to (x,y,z) space
       var Y0 = j - t;
       var Z0 = k - t;
       var x0 = x - X0; // The x,y,z distances from the cell origin
       var y0 = y - Y0;
-      var z0 = zin - Z0;
+      var z0 = z - Z0;
       // For the 3D case, the simplex shape is a slightly irregular tetrahedron.
       // Determine which simplex we are in.
       var i1, j1, k1; // Offsets for second corner of simplex in (i,j,k) coords
@@ -410,15 +410,29 @@ Better rank ordering method by Stefan Gustavson in 2012.
     }
   }
 
-  // amd
-  if (typeof define !== 'undefined' && define.amd) define(function() {return SimplexNoise;});
-  // common js
-  if (typeof exports !== 'undefined') exports.SimplexNoise = SimplexNoise;
-  // browser
-  else if (typeof window !== 'undefined') window.SimplexNoise = SimplexNoise;
-  // nodejs
-  if (typeof module !== 'undefined') {
-    module.exports = SimplexNoise;
+  function buildPermutationTable(random) {
+    var i;
+    var p = new Uint8Array(256);
+    for (i = 0; i < 256; i++) {
+      p[i] = i;
+    }
+    for (i = 0; i < 255; i++) {
+      var r = i + ~~(random() * (256 - i));
+      var aux = p[i];
+      p[i] = p[r];
+      p[r] = aux;
+    }
+    return p;
   }
 
+  if (typeof define !== 'undefined' && define.amd) {
+    // AMD
+    define(function () { return simplex; });
+  } else if (typeof exports !== 'undefined') {
+    // CommonJS (Node, Browserify)
+    module.exports = simplex;
+  } else if (typeof window !== 'undefined') {
+    // Browser
+    window.simplex = simplex;
+  }
 })();
diff --git a/test/simplex-noise-test.js b/test/simplex-noise-test.js
index 86dd148..effee3b 100644
--- a/test/simplex-noise-test.js
+++ b/test/simplex-noise-test.js
@@ -1,151 +1,103 @@
-var SimplexNoise = require('../simplex-noise');
+var simplex = require('../simplex-noise');
 var Alea = require('alea');
 var assert = require('chai').assert;
 
 describe('SimplexNoise', function() {
-  function getRandom() {
-    return new Alea('seed');
-  }
-
-  describe('buildPermutationTable', function() {
-    it('contains all indices exactly once', function() {
-      var table = SimplexNoise._buildPermutationTable(getRandom());
-      var aTable = Array.prototype.slice.call(table);
-      for (var i = 0; i < aTable.length; i++) {
-        assert.include(aTable, i);
-      }
-    });
-    it('can contain 0 in the first position', function() {
-      function zero() { return 0; }
-      var table = SimplexNoise._buildPermutationTable(zero);
-      var aTable = Array.prototype.slice.call(table);
-      for (var i = 0; i < aTable.length; i++) {
-        assert.equal(aTable[i], i);
-      }
-    });
-  });
-
-  describe('constructor', function() {
-    function checkPermutationTable(simplex) {
-      assert.equal(simplex.perm.length, 512);
-      assert.equal(simplex.permMod12.length, 512);
-      for (var i = 0; i < 512; i++) {
-        assert.isBelow(simplex.perm[i], 256);
-        assert.isAtLeast(simplex.perm[i], 0);
-        assert.equal(simplex.perm[i], simplex.perm[i & 255]);
-        assert.equal(simplex.permMod12[i], simplex.perm[i] % 12);
-      }
-    }
-
-    it('should initialize with Math.random', function() {
-      var simplex = new SimplexNoise();
-      checkPermutationTable(simplex);
-    });
-
-    it('should initialize with a custom random function', function() {
-      var simplex = new SimplexNoise(getRandom());
-      checkPermutationTable(simplex);
-    });
-
-    it('should initialize with seed', function() {
-      var simplex = new SimplexNoise('seed');
-      checkPermutationTable(simplex);
-    });
-
+  describe('factory', function() {
     it('should initialize consistently when using the same seed', function() {
-      var a = new SimplexNoise('seed');
-      var b = new SimplexNoise('seed');
-      assert.deepEqual(a, b);
-      assert.equal(a.noise2D(1, 1), b.noise2D(1, 1));
+      var randomA = new Alea('seed')
+      var randomB = new Alea('seed')
+      var noiseA = simplex(randomA);
+      var noiseB = simplex(randomB);
+      assert.equal(noiseA(1, 1), noiseB(1, 1));
     });
 
     it('should initialize differently when using a different seed', function() {
-      var a = new SimplexNoise('seed');
-      var b = new SimplexNoise('different seed');
-      assert.notDeepEqual(a, b);
-      assert.notEqual(a.noise2D(1, 1), b.noise2D(1, 1));
+      var randomA = new Alea('seed')
+      var randomB = new Alea('different seed')
+      var noiseA = simplex(randomA);
+      var noiseB = simplex(randomB);
+      assert.notEqual(noiseA(1, 1), noiseB(1, 1));
     });
   });
 
   describe('noise', function() {
-    var simplex;
+    var noise, noise2;
     beforeEach(function() {
-      simplex = new SimplexNoise(getRandom());
+      noise = simplex(new Alea('seed'));
+      noise2 = simplex(new Alea('other seed'))
     });
     describe('noise2D', function() {
       it('should return the same value for the same input', function() {
-        assert.equal(simplex.noise2D(0.1, 0.2), simplex.noise2D(0.1, 0.2));
+        assert.equal(noise(0.1, 0.2), noise(0.1, 0.2));
       });
       it('should return a different value for a different input', function() {
-        assert.notEqual(simplex.noise2D(0.1, 0.2), simplex.noise2D(0.101, 0.202));
+        assert.notEqual(noise(0.1, 0.2), noise(0.101, 0.202));
       });
       it('should return a different output with a different seed', function() {
-        var simplex2 = new SimplexNoise(new Alea('other seed'));
-        assert.notEqual(simplex.noise2D(0.1, 0.2), simplex2.noise2D(0.1, 0.2));
+        assert.notEqual(noise(0.1, 0.2), noise2(0.1, 0.2));
       });
       it('should return values between -1 and 1', function() {
         for (var x = 0; x < 10; x++) {
           for (var y = 0; y < 10; y++) {
-            assert(simplex.noise2D(x / 5, y / 5) >= -1);
-            assert(simplex.noise2D(x / 5, y / 5) <= 1);
+            assert(noise(x / 5, y / 5) >= -1);
+            assert(noise(x / 5, y / 5) <= 1);
           }
         }
       });
       it('should return similar values for similar inputs', function() {
-        assert(Math.abs(simplex.noise2D(0.1, 0.2) - simplex.noise2D(0.101, 0.202)) < 0.1);
+        assert(Math.abs(noise(0.1, 0.2) - noise(0.101, 0.202)) < 0.1);
       });
     });
 
     describe('noise3D', function() {
       it('should return the same value for the same input', function() {
-        assert.equal(simplex.noise3D(0.1, 0.2, 0.3), simplex.noise3D(0.1, 0.2, 0.3));
+        assert.equal(noise(0.1, 0.2, 0.3), noise(0.1, 0.2, 0.3));
       });
       it('should return a different value for a different input', function() {
-        assert.notEqual(simplex.noise3D(0.1, 0.2, 0.3), simplex.noise3D(0.101, 0.202, 0.303));
-        assert.notEqual(simplex.noise3D(0.1, 0.2, 0.3), simplex.noise3D(0.1, 0.2, 0.303));
+        assert.notEqual(noise(0.1, 0.2, 0.3), noise(0.101, 0.202, 0.303));
+        assert.notEqual(noise(0.1, 0.2, 0.3), noise(0.1, 0.2, 0.303));
       });
       it('should return a different output with a different seed', function() {
-        var simplex2 = new SimplexNoise(new Alea('other seed'));
-        assert.notEqual(simplex.noise2D(0.1, 0.2, 0.3), simplex2.noise2D(0.1, 0.2, 0.3));
+        assert.notEqual(noise(0.1, 0.2, 0.3), noise2(0.1, 0.2, 0.3));
       });
       it('should return values between -1 and 1', function() {
         for (var x = 0; x < 10; x++) {
           for (var y = 0; y < 10; y++) {
-            assert(simplex.noise3D(x / 5, y / 5, x + y) >= -1);
-            assert(simplex.noise3D(x / 5, y / 5, x + y) <= 1);
+            assert(noise(x / 5, y / 5, x + y) >= -1);
+            assert(noise(x / 5, y / 5, x + y) <= 1);
           }
         }
       });
       it('should return similar values for similar inputs', function() {
-        assert(Math.abs(simplex.noise3D(0.1, 0.2, 0.3) - simplex.noise3D(0.101, 0.202, 0.303)) < 0.1);
+        assert(Math.abs(noise(0.1, 0.2, 0.3) - noise(0.101, 0.202, 0.303)) < 0.1);
       });
     });
 
     describe('noise4D', function() {
       it('should return the same value for the same input', function() {
-        assert.equal(simplex.noise4D(0.1, 0.2, 0.3, 0.4), simplex.noise4D(0.1, 0.2, 0.3, 0.4));
+        assert.equal(noise(0.1, 0.2, 0.3, 0.4), noise(0.1, 0.2, 0.3, 0.4));
       });
       it('should return a different value for a different input', function() {
-        assert.notEqual(simplex.noise4D(0.1, 0.2, 0.3, 0.4), simplex.noise4D(0.101, 0.202, 0.303, 0.404));
-        assert.notEqual(simplex.noise4D(0.1, 0.2, 0.3, 0.4), simplex.noise4D(0.1, 0.2, 0.3, 0.404));
+        assert.notEqual(noise(0.1, 0.2, 0.3, 0.4), noise(0.101, 0.202, 0.303, 0.404));
+        assert.notEqual(noise(0.1, 0.2, 0.3, 0.4), noise(0.1, 0.2, 0.3, 0.404));
       });
       it('should return a different output with a different seed', function() {
-        var simplex2 = new SimplexNoise(new Alea('other seed'));
-        assert.notEqual(simplex.noise2D(0.1, 0.2, 0.3, 0.4), simplex2.noise2D(0.1, 0.2, 0.3, 0.4));
+        assert.notEqual(noise(0.1, 0.2, 0.3, 0.4), noise2(0.1, 0.2, 0.3, 0.4));
       });
       it('should return values between -1 and 1', function() {
         for (var x = 0; x < 10; x++) {
           for (var y = 0; y < 10; y++) {
-            assert(simplex.noise4D(x / 5, y / 5, x + y, x - y) >= -1);
-            assert(simplex.noise4D(x / 5, y / 5, x + y, x - y) <= 1);
+            assert(noise(x / 5, y / 5, x + y, x - y) >= -1);
+            assert(noise(x / 5, y / 5, x + y, x - y) <= 1);
           }
         }
       });
       it('should return similar values for similar inputs', function() {
         assert(
           Math.abs(
-            simplex.noise4D(0.1, 0.2, 0.3, 0.4) -
-            simplex.noise4D(0.101, 0.202, 0.303, 0.404)
+            noise(0.1, 0.2, 0.3, 0.4) -
+            noise(0.101, 0.202, 0.303, 0.404)
           ) < 0.1);
       });
     });

From 3c0491d6e9767eae60b6ed027e72abdbf881f5e0 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 20:49:05 -0700
Subject: [PATCH 03/13] ignore shrinkwrap

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 3c3629e..4f0cca6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 node_modules
+shrinkwrap.yaml

From 39defa65346d9f432919e4ccab0b416acd940819 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 20:52:21 -0700
Subject: [PATCH 04/13] evaluate benchmarks

---
 perf/benchmark.js | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/perf/benchmark.js b/perf/benchmark.js
index b5be502..9d96526 100644
--- a/perf/benchmark.js
+++ b/perf/benchmark.js
@@ -1,17 +1,19 @@
 var Benchmark = this.Benchmark || require('benchmark');
-var SimplexNoise = this.SimplexNoise || require('../simplex-noise');
-var simplex = new SimplexNoise();
+var simplex = this.simplex || require('../simplex-noise');
 
 var suite = new Benchmark.Suite('simplex-noise')
   .add('init', function() {
-    var simplex = new SimplexNoise();
+    var noise = simplex(Math.random);
+  })
+  .add('noise1D', function() {
+    for (var x = 0; x < 8; x++) {
+      noise(x / 8);
+    }
   })
   .add('noise2D', function() {
     for (var x = 0; x < 8; x++) {
       for (var y = 0; y < 8; y++) {
-        for (var z = 0; z < 8; z++) {
-          simplex.noise2D(x / 8, y / 8);
-        }
+        noise(x / 8, y / 8);
       }
     }
   })
@@ -19,7 +21,7 @@ var suite = new Benchmark.Suite('simplex-noise')
     for (var x = 0; x < 8; x++) {
       for (var y = 0; y < 8; y++) {
         for (var z = 0; z < 8; z++) {
-          simplex.noise3D(x / 8, y / 8, z / 8);
+          noise(x / 8, y / 8, z / 8);
         }
       }
     }
@@ -28,7 +30,7 @@ var suite = new Benchmark.Suite('simplex-noise')
     for (var x = 0; x < 8; x++) {
       for (var y = 0; y < 8; y++) {
         for (var z = 0; z < 8; z++) {
-          simplex.noise3D(x / 8, y / 8, z / 8);
+          noise(x / 8, y / 8, z / 8);
         }
       }
     }
@@ -37,7 +39,7 @@ var suite = new Benchmark.Suite('simplex-noise')
     for (var x = 0; x < 8; x++) {
       for (var y = 0; y < 8; y++) {
         for (var z = 0; z < 8; z++) {
-          simplex.noise4D(x / 8, y / 8, z / 8, (x + y) / 16);
+          noise(x / 8, y / 8, z / 8, (x + y) / 16);
         }
       }
     }

From 52a36fdff47835a185886c8b69c61e99af664e26 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:15:45 -0700
Subject: [PATCH 05/13] fix 1D noise function, add 1D tests

---
 simplex-noise.js           |  2 +-
 test/simplex-noise-test.js | 34 ++++++++++++++++++++++++++++------
 2 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/simplex-noise.js b/simplex-noise.js
index 7a10a69..ea17b7a 100644
--- a/simplex-noise.js
+++ b/simplex-noise.js
@@ -105,7 +105,7 @@ Better rank ordering method by Stefan Gustavson in 2012.
     };
 
     function noise1D(x) {
-      return noise2D(x, 0);
+      return noise2D(x, 1);
     }
 
     function noise2D(x, y) {
diff --git a/test/simplex-noise-test.js b/test/simplex-noise-test.js
index effee3b..6cd5885 100644
--- a/test/simplex-noise-test.js
+++ b/test/simplex-noise-test.js
@@ -22,11 +22,33 @@ describe('SimplexNoise', function() {
   });
 
   describe('noise', function() {
-    var noise, noise2;
+    var noise, noiseA, noiseB;
     beforeEach(function() {
-      noise = simplex(new Alea('seed'));
-      noise2 = simplex(new Alea('other seed'))
+      noiseA = simplex(new Alea('seed'));
+      noiseB = simplex(new Alea('other seed'))
+      noise = noiseA
     });
+
+    describe('noise1D', function() {
+      it('should return the same value for the same input', function() {
+        assert.equal(noise(0.1), noise(0.1));
+      });
+      it('should return a different value for a different input', function() {
+        assert.notEqual(noise(0.1), noise(0.101));
+      });
+      it('should return a different output with a different seed', function() {
+        assert.notEqual(noiseA(0.1), noiseB(0.1));
+      });
+      it('should return values between -1 and 1', function() {
+        for (var x = 0; x < 10; x++) {
+          assert(noise(x / 5) >= -1);
+        }
+      });
+      it('should return similar values for similar inputs', function() {
+        assert(Math.abs(noise(0.1) - noise(0.101)) < 0.1);
+      });
+    });
+
     describe('noise2D', function() {
       it('should return the same value for the same input', function() {
         assert.equal(noise(0.1, 0.2), noise(0.1, 0.2));
@@ -35,7 +57,7 @@ describe('SimplexNoise', function() {
         assert.notEqual(noise(0.1, 0.2), noise(0.101, 0.202));
       });
       it('should return a different output with a different seed', function() {
-        assert.notEqual(noise(0.1, 0.2), noise2(0.1, 0.2));
+        assert.notEqual(noiseA(0.1, 0.2), noiseB(0.1, 0.2));
       });
       it('should return values between -1 and 1', function() {
         for (var x = 0; x < 10; x++) {
@@ -59,7 +81,7 @@ describe('SimplexNoise', function() {
         assert.notEqual(noise(0.1, 0.2, 0.3), noise(0.1, 0.2, 0.303));
       });
       it('should return a different output with a different seed', function() {
-        assert.notEqual(noise(0.1, 0.2, 0.3), noise2(0.1, 0.2, 0.3));
+        assert.notEqual(noiseA(0.1, 0.2, 0.3), noiseB(0.1, 0.2, 0.3));
       });
       it('should return values between -1 and 1', function() {
         for (var x = 0; x < 10; x++) {
@@ -83,7 +105,7 @@ describe('SimplexNoise', function() {
         assert.notEqual(noise(0.1, 0.2, 0.3, 0.4), noise(0.1, 0.2, 0.3, 0.404));
       });
       it('should return a different output with a different seed', function() {
-        assert.notEqual(noise(0.1, 0.2, 0.3, 0.4), noise2(0.1, 0.2, 0.3, 0.4));
+        assert.notEqual(noiseA(0.1, 0.2, 0.3, 0.4), noiseB(0.1, 0.2, 0.3, 0.4));
       });
       it('should return values between -1 and 1', function() {
         for (var x = 0; x < 10; x++) {

From 4e66eaece16965ad2ae7230ba5170270046b092f Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:28:51 -0700
Subject: [PATCH 06/13] update README

---
 README.md | 31 +++++++++----------------------
 1 file changed, 9 insertions(+), 22 deletions(-)

diff --git a/README.md b/README.md
index 565b00a..d1040e0 100644
--- a/README.md
+++ b/README.md
@@ -11,26 +11,13 @@ simplex-noise.js is a fast simplex noise implementation in Javascript. It works
 
 ## Usage
 
-By default simplex-noise.js will use Math.random() to seed the noise.
 ```javascript
 // initializing a new simplex instance
 // do this only once as it is relatively expensive
-var simplex = new SimplexNoise(),
-    value2d = simplex.noise2D(x, y),
-    value3d = simplex.noise3D(x, y, z),
-    value4d = simplex.noise4D(x, y, z, w);
-```
-
-You can also pass in a seed string which will then be used to initialize
-the noise using the built in alea PRNG.
-```javascript
-var simplex = new SimplexNoise('seed'),
-    value2d = simplex.noise2D(x, y),
-    sameSeed = new SimplexNoise('seed'),
-    differentSeed = new SimplexNoise('different seed');
-
-sameSeed.noise2D(x, y) === value2d
-differentSeed.noise2D(x, y) !== value2d
+var noise = simplex(Math.random),
+    value2d = noise(x, y),
+    value3d = noise(x, y, z),
+    value4d = noise(x, y, z, w);
 ```
 
 You can also pass an alternative random function to the constructor that is
@@ -39,8 +26,8 @@ This can be used with a custom pseudo random number generator:
 
 ```javascript
 var random = new Alea(seed),
-    simplex = new SimplexNoise(random),
-    value2d = simplex.noise2D(x, y);
+    noise = simplex(random),
+    value = noise(x, y);
 ```
 
 The ALEA PRNG can be found on in the npm package [alea](https://npmjs.org/package/alea).
@@ -50,9 +37,9 @@ The ALEA PRNG can be found on in the npm package [alea](https://npmjs.org/packag
 Node.js is also supported, you can install the package using [npm](https://npmjs.org/package/simplex-noise).
 
 ```javascript
-var SimplexNoise = require('simplex-noise'),
-    simplex = new SimplexNoise(Math.random),
-    value2d = simplex.noise2D(x, y);
+var simplex = require('simplex-noise'),
+    noise = simplex(Math.random),
+    value = noise(x, y);
 ```
 
 ## Benchmarks

From d89b6ab9527f4350dc4f3b9e8aed2bd6e699aaf8 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:31:03 -0700
Subject: [PATCH 07/13] update changelog

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index d1040e0..0e486c8 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,10 @@ npm install && npm test
 
 ## Changelog
 
+### 3.0.0
+- Change function signature to `simplex(random)(x[, y, z, w]) -> noise`
+- Add support for 1D noise
+
 ### 2.4.0
 - Included a PRNG based on ALEA to directly allow seeding
 - Included typescript definitions

From 0f88e38ff26c2642611c40988976dd540775392f Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:31:41 -0700
Subject: [PATCH 08/13] v3.0.0

---
 package-lock.json | 2 +-
 package.json      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index b768e68..420b469 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "simplex-noise",
-  "version": "2.4.0",
+  "version": "3.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 8225a8f..845650c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "simplex-noise",
-  "version": "2.4.0",
+  "version": "3.0.0",
   "description": "simplex-noise is a fast simplex noise implementation in Javascript. Works in node and in the browser.",
   "homepage": "https://github.com/jwagner/simplex-noise.js",
   "author": "Jonas Wagner <jonas@29a.ch> (http://29a.ch/)",

From 4f8e6316b518bfc56e5fef1476d9cbe0dc80fd41 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:34:47 -0700
Subject: [PATCH 09/13] clear cache

---
 shrinkwrap.yaml | 1378 -----------------------------------------------
 1 file changed, 1378 deletions(-)
 delete mode 100644 shrinkwrap.yaml

diff --git a/shrinkwrap.yaml b/shrinkwrap.yaml
deleted file mode 100644
index c38e581..0000000
--- a/shrinkwrap.yaml
+++ /dev/null
@@ -1,1378 +0,0 @@
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-  benchmark: 2.1.4
-  chai: 4.1.2
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-  mocha: 5.0.4
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-  /ajv-keywords/2.1.1/ajv@5.5.2:
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-    id: registry.npmjs.org/ajv-keywords/2.1.1
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From a12e4e907949174183051c76e1f9bfcbb82b3d55 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:47:27 -0700
Subject: [PATCH 10/13] satisfy eslint

---
 .eslintrc.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.eslintrc.js b/.eslintrc.js
index 1e9352f..1fe2c38 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -12,7 +12,8 @@ module.exports = {
     "rules": {
         "indent": [
             "error",
-            2
+            2,
+            { "SwitchCase": 1 }
         ],
         "linebreak-style": [
             "error",

From 0bd61693564d9813c01cd1ad42bd1ba86b1fa82d Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:48:11 -0700
Subject: [PATCH 11/13] remove alea license

---
 alea.md | 19 -------------------
 1 file changed, 19 deletions(-)
 delete mode 100644 alea.md

diff --git a/alea.md b/alea.md
deleted file mode 100644
index b20988c..0000000
--- a/alea.md
+++ /dev/null
@@ -1,19 +0,0 @@
-Copyright (C) 2010 by Johannes Baagøe <baagoe@baagoe.org>
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.

From 87becb7a3ebf5fcc57ff3799057f22d3ea7297a0 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 21:54:19 -0700
Subject: [PATCH 12/13] past tense in changelog

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 0e486c8..e43d99c 100644
--- a/README.md
+++ b/README.md
@@ -61,8 +61,8 @@ npm install && npm test
 ## Changelog
 
 ### 3.0.0
-- Change function signature to `simplex(random)(x[, y, z, w]) -> noise`
-- Add support for 1D noise
+- Changed function signature to `simplex(random)(x[, y, z, w]) -> noise`
+- Added support for 1D noise
 
 ### 2.4.0
 - Included a PRNG based on ALEA to directly allow seeding

From 913583c138f54b6b478d08137ac64bf278f1ca88 Mon Sep 17 00:00:00 2001
From: Brandon Semilla <semibran@gmail.com>
Date: Mon, 12 Mar 2018 22:17:29 -0700
Subject: [PATCH 13/13] not a constructor or a factory

---
 README.md                  | 4 +---
 test/simplex-noise-test.js | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index e43d99c..6526c75 100644
--- a/README.md
+++ b/README.md
@@ -20,9 +20,7 @@ var noise = simplex(Math.random),
     value4d = noise(x, y, z, w);
 ```
 
-You can also pass an alternative random function to the constructor that is
-used to build the permutation table.
-This can be used with a custom pseudo random number generator:
+You can also pass an alternative random function to the function that is used to build the permutation table. This can be used with a custom pseudo random number generator:
 
 ```javascript
 var random = new Alea(seed),
diff --git a/test/simplex-noise-test.js b/test/simplex-noise-test.js
index 6cd5885..fc39dc6 100644
--- a/test/simplex-noise-test.js
+++ b/test/simplex-noise-test.js
@@ -3,7 +3,7 @@ var Alea = require('alea');
 var assert = require('chai').assert;
 
 describe('SimplexNoise', function() {
-  describe('factory', function() {
+  describe('initialization function', function() {
     it('should initialize consistently when using the same seed', function() {
       var randomA = new Alea('seed')
       var randomB = new Alea('seed')