diff --git a/CHANGELOG.md b/CHANGELOG.md
index b079981..0473eb6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+# [1.18.0](https://github.com/javascriptdata/scikit.js/compare/v1.17.0...v1.18.0) (2022-04-26)
+
+
+### Features
+
+* removed seedrandom in favor of inlining to help build on esm.sh ([245d49c](https://github.com/javascriptdata/scikit.js/commit/245d49c904fea6ffab9201cab58c4504b6ddfe3a))
+
# [1.17.0](https://github.com/javascriptdata/scikit.js/compare/v1.16.0...v1.17.0) (2022-04-21)
diff --git a/package-lock.json b/package-lock.json
index 3145c6f..9044d05 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
{
"name": "scikitjs",
- "version": "1.17.0",
+ "version": "1.18.0",
"lockfileVersion": 2,
"requires": true,
"packages": {
"": {
"name": "scikitjs",
- "version": "1.17.0",
+ "version": "1.18.0",
"hasInstallScript": true,
"license": "ISC",
"dependencies": {
@@ -14,7 +14,6 @@
"@tensorflow/tfjs-node": "3.13.0",
"lodash": "^4.17.21",
"mathjs": "^10.0.0",
- "seedrandom": "^3.0.5",
"simple-statistics": "^7.7.0"
},
"devDependencies": {
diff --git a/package.json b/package.json
index bb4ddc7..9157c46 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
{
"name": "scikitjs",
- "version": "1.17.0",
+ "version": "1.18.0",
"description": "Scikit-Learn for JS",
"output": {
"node": "dist/node/index.js",
@@ -53,7 +53,6 @@
"@tensorflow/tfjs-node": "3.13.0",
"lodash": "^4.17.21",
"mathjs": "^10.0.0",
- "seedrandom": "^3.0.5",
"simple-statistics": "^7.7.0"
},
"devDependencies": {
diff --git a/src/model_selection/KFold.test.ts b/src/model_selection/KFold.test.ts
index bb18ef1..625e0c0 100644
--- a/src/model_selection/KFold.test.ts
+++ b/src/model_selection/KFold.test.ts
@@ -15,7 +15,7 @@
import * as fc from 'fast-check'
import { KFold } from './KFold'
-import { alea } from 'seedrandom'
+import { alea } from '../randUtils'
import '../jestTensorMatchers'
import { tf } from '../shared/globals'
type Tensor2D = tf.Tensor2D
diff --git a/src/neighbors/KdTree.ts b/src/neighbors/KdTree.ts
index 9a8750d..2adefcd 100644
--- a/src/neighbors/KdTree.ts
+++ b/src/neighbors/KdTree.ts
@@ -17,7 +17,7 @@ import { assert } from '../typesUtils'
import { tf } from '../shared/globals'
import { Neighborhood, NeighborhoodParams } from './Neighborhood'
import * as randUtils from '../randUtils'
-import { alea } from 'seedrandom'
+import { alea } from '../randUtils'
import { CappedMaxHeap } from './CappedMaxHeap'
const child = (parent: number) => (parent << 1) + 1
diff --git a/src/neighbors/neighborhoodGenericTests.ts b/src/neighbors/neighborhoodGenericTests.ts
index ce33568..275c858 100644
--- a/src/neighbors/neighborhoodGenericTests.ts
+++ b/src/neighbors/neighborhoodGenericTests.ts
@@ -15,7 +15,7 @@
import * as fc from 'fast-check'
import { tf } from '../shared/globals'
-import { alea } from 'seedrandom'
+import { alea } from '../randUtils'
import { Neighborhood, NeighborhoodParams } from './Neighborhood'
import { lhs, shuffle } from '../randUtils'
import { minkowskiMetric } from './Metric'
diff --git a/src/randUtils.ts b/src/randUtils.ts
index 31b83fa..4b0aebf 100644
--- a/src/randUtils.ts
+++ b/src/randUtils.ts
@@ -12,8 +12,83 @@
* limitations under the License.
* ==========================================================================
*/
+export function _prng_restore(prng: any, xg: any, opts: any) {
+ let state = opts && opts.state
+ if (state) {
+ if (typeof state == 'object') xg.copy(state, xg)
+ prng.state = () => xg.copy(xg, {})
+ }
+}
+
+export function alea(seed?: any, opts?: any) {
+ let xg = new AleaGen(seed)
+
+ let prng = () => xg.next()
+
+ _prng_restore(prng, xg, opts)
+ return prng
+}
+
+class AleaGen {
+ c: number
+ s0: number
+ s1: number
+ s2: number
+ constructor(seed: any) {
+ if (seed == null) seed = +new Date()
+
+ let n = 0xefc8249d
-import { alea } from 'seedrandom'
+ // Apply the seeding algorithm from Baagoe.
+ this.c = 1
+ this.s0 = mash(' ')
+ this.s1 = mash(' ')
+ this.s2 = mash(' ')
+ this.s0 -= mash(seed)
+ if (this.s0 < 0) {
+ this.s0 += 1
+ }
+ this.s1 -= mash(seed)
+ if (this.s1 < 0) {
+ this.s1 += 1
+ }
+ this.s2 -= mash(seed)
+ if (this.s2 < 0) {
+ this.s2 += 1
+ }
+
+ function mash(data: any) {
+ data = String(data)
+ for (let i = 0; i < data.length; i++) {
+ n += data.charCodeAt(i)
+ let 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
+ }
+ }
+
+ next() {
+ let { c, s0, s1, s2 } = this
+ let t = 2091639 * s0 + c * 2.3283064365386963e-10 // 2^-32
+ this.s0 = s1
+ this.s1 = s2
+ return (this.s2 = t - (this.c = t | 0))
+ }
+
+ copy(f: any, t: any) {
+ t.c = f.c
+ t.s0 = f.s0
+ t.s1 = f.s1
+ t.s2 = f.s2
+ return t
+ }
+}
export type int = number
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