diff --git a/README.md b/README.md
index 2c31298..fe8ebf8 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ See [docs](https://aureooms.github.io/js-collections-deque).
 Parent is [@aureooms/js-data-structures](https://github.com/aureooms/js-data-structures).
 
 ```js
+import {deque} from '@aureooms/js-collections-deque';
 deque( 'abcde' , 3 ) ; // 'cde'
 ```
 
diff --git a/doc/manual/usage.md b/doc/manual/usage.md
index f05e2c8..d7fe6ce 100644
--- a/doc/manual/usage.md
+++ b/doc/manual/usage.md
@@ -9,7 +9,7 @@ import 'regenerator-runtime/runtime.js' ;
 
 Then
 ```js
-const number = require( '@aureooms/js-collections-deque' ) ;
+const {deque} = require( '@aureooms/js-collections-deque' ) ;
 // or
-import number from '@aureooms/js-collections-deque' ;
+import {deque} from '@aureooms/js-collections-deque' ;
 ```
diff --git a/mangle.json b/mangle.json
index e765f9c..8e40801 100644
--- a/mangle.json
+++ b/mangle.json
@@ -7,6 +7,23 @@
     }
   },
   "props": {
-    "props": {}
+    "props": {
+      "$_center": "x",
+      "$_checkbounds": "b",
+      "$_container": "c",
+      "$_copy": "y",
+      "$_currentsize": "s",
+      "$_empty": "e",
+      "$_grow": "g",
+      "$_growth": "G",
+      "$_maxlen": "M",
+      "$_minsize": "m",
+      "$_popindex": "p",
+      "$_range": "r",
+      "$_realloc": "a",
+      "$_shrink": "s",
+      "$_value": "v",
+      "$_where": "w"
+    }
   }
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index ca32a8b..528869d 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@aureooms/js-collections-deque",
   "description": "Python's deque data structure for JavaScript",
-  "version": "5.0.0",
+  "version": "6.0.0",
   "license": "AGPL-3.0",
   "author": "Aurélien Ooms <aurelien.ooms@gmail.com>",
   "homepage": "https://aureooms.github.io/js-collections-deque",
@@ -59,15 +59,15 @@
     "travis": "npm run lint-config && npm run lint && npm run cover"
   },
   "dependencies": {
-    "@aureooms/js-error": "^5.0.1"
+    "@aureooms/js-error": "^5.0.2"
   },
   "devDependencies": {
-    "@aureooms/js-itertools": "4.1.0",
+    "@aureooms/js-itertools": "5.0.0",
     "@babel/core": "7.13.10",
     "@babel/preset-env": "7.13.10",
     "@babel/register": "7.13.8",
     "@commitlint/cli": "12.0.1",
-    "@js-library/commitlint-config": "0.0.3",
+    "@js-library/commitlint-config": "0.0.4",
     "ava": "3.15.0",
     "babel-plugin-transform-remove-console": "6.9.4",
     "babel-plugin-unassert": "3.0.1",
diff --git a/src/_deque.js b/src/_deque.js
index 7b96323..d2dd369 100644
--- a/src/_deque.js
+++ b/src/_deque.js
@@ -1,12 +1,26 @@
 import {TypeError, ValueError} from '@aureooms/js-error';
 
+/**
+ * _deque.
+ *
+ * @param {Deque} UnboundedDeque
+ * @param {Deque} BoundedDeque
+ * @param {Deque} SingleElementDeque
+ * @param {Deque} EmptyDeque
+ */
 export default function _deque(
 	UnboundedDeque,
 	BoundedDeque,
 	SingleElementDeque,
 	EmptyDeque,
 ) {
-	const deque = function (iterable = null, maxlen = null) {
+	/**
+	 * Deque.
+	 *
+	 * @param {Iterable<any>} iterable
+	 * @param {Number} maxlen
+	 */
+	const deque = (iterable = null, maxlen = null) => {
 		if (maxlen === null) {
 			return new UnboundedDeque(iterable);
 		}
diff --git a/src/implementation/ArbitrarySizeDeque.js b/src/implementation/ArbitrarySizeDeque.js
index 9b4d73b..13f897a 100644
--- a/src/implementation/ArbitrarySizeDeque.js
+++ b/src/implementation/ArbitrarySizeDeque.js
@@ -1,27 +1,42 @@
 import Deque from './Deque.js';
+import {NotImplementedError} from '@aureooms/js-error';
 
+/**
+ * ArbitrarySizeDeque.
+ */
 export default function ArbitrarySizeDeque() {}
 
 ArbitrarySizeDeque.prototype = new Deque();
 
 ArbitrarySizeDeque.prototype.values = function* () {
-	let i = this.center;
+	let i = this._center;
 	const _m = i + this.length;
 	const m = Math.min(this.capacity(), _m);
 
 	for (; i < m; ++i) {
-		yield this.container[i];
+		yield this._container[i];
 	}
 
 	const n = _m % this.capacity();
 
 	if (n < _m) {
 		for (i = 0; i < n; ++i) {
-			yield this.container[i];
+			yield this._container[i];
 		}
 	}
 };
 
+/**
+ * ArbitrarySizeDeque.prototype._popindex.
+ *
+ * @param {any} _container
+ * @param {Number} _index
+ * @return {any}
+ */
+ArbitrarySizeDeque.prototype._popindex = function (_container, _index) {
+	throw new NotImplementedError('_popindex');
+};
+
 ArbitrarySizeDeque.prototype.pop = function () {
 	const [container, index] = this._where(this.length - 1);
 
@@ -31,8 +46,8 @@ ArbitrarySizeDeque.prototype.pop = function () {
 ArbitrarySizeDeque.prototype.popleft = function () {
 	const [container, index] = this._where(0);
 
-	++this.center;
-	this.center %= this.capacity();
+	++this._center;
+	this._center %= this.capacity();
 
 	return this._popindex(container, index);
 };
diff --git a/src/implementation/BoundedDeque.js b/src/implementation/BoundedDeque.js
index fcce4f6..0d5861d 100644
--- a/src/implementation/BoundedDeque.js
+++ b/src/implementation/BoundedDeque.js
@@ -1,12 +1,18 @@
 import ArbitrarySizeDeque from './ArbitrarySizeDeque.js';
 
+/**
+ * BoundedDeque.
+ *
+ * @param {Iterable<any>} iterable
+ * @param {Number} maxlen
+ */
 export default function BoundedDeque(iterable, maxlen) {
-	this.maxlen = maxlen;
+	this._maxlen = maxlen;
 
 	// eslint-disable-next-line unicorn/no-new-array
-	this.container = new Array(maxlen);
+	this._container = new Array(maxlen);
 
-	this.center = 0;
+	this._center = 0;
 
 	this.length = 0;
 
@@ -22,17 +28,17 @@ BoundedDeque.prototype.len = function () {
 };
 
 BoundedDeque.prototype.capacity = function () {
-	return this.maxlen;
+	return this._maxlen;
 };
 
 BoundedDeque.prototype.append = function (x) {
-	if (this.length === this.maxlen) {
-		this.container[this.center] = x;
-		++this.center;
-		this.center %= this.maxlen;
+	if (this.length === this._maxlen) {
+		this._container[this._center] = x;
+		++this._center;
+		this._center %= this._maxlen;
 	} else {
-		const i = (this.center + this.length) % this.maxlen;
-		this.container[i] = x;
+		const i = (this._center + this.length) % this._maxlen;
+		this._container[i] = x;
 		++this.length;
 	}
 
@@ -40,12 +46,12 @@ BoundedDeque.prototype.append = function (x) {
 };
 
 BoundedDeque.prototype.appendleft = function (x) {
-	--this.center;
-	this.center += this.maxlen;
-	this.center %= this.maxlen;
-	this.container[this.center] = x;
+	--this._center;
+	this._center += this._maxlen;
+	this._center %= this._maxlen;
+	this._container[this._center] = x;
 
-	if (this.length < this.maxlen) {
+	if (this.length < this._maxlen) {
 		++this.length;
 	}
 
@@ -53,26 +59,33 @@ BoundedDeque.prototype.appendleft = function (x) {
 };
 
 BoundedDeque.prototype.clear = function () {
-	this.center = 0;
+	this._center = 0;
 
 	this.length = 0;
 
 	// eslint-disable-next-line unicorn/no-new-array
-	this.container = new Array(this.maxlen);
+	this._container = new Array(this._maxlen);
 
 	return this;
 };
 
 BoundedDeque.prototype.copy = function () {
-	return new BoundedDeque(this, this.maxlen);
+	return new BoundedDeque(this, this._maxlen);
 };
 
 BoundedDeque.prototype._where = function (i) {
 	this._checkbounds(i);
 
-	return [this.container, (this.center + i) % this.maxlen];
+	return [this._container, (this._center + i) % this._maxlen];
 };
 
+/**
+ * BoundedDeque.prototype._popindex.
+ *
+ * @param {any} container
+ * @param {Number} index
+ * @return {any}
+ */
 BoundedDeque.prototype._popindex = function (container, index) {
 	const value = container[index];
 
diff --git a/src/implementation/Deque.js b/src/implementation/Deque.js
index 8be1a3a..12e31a6 100644
--- a/src/implementation/Deque.js
+++ b/src/implementation/Deque.js
@@ -1,43 +1,97 @@
 import {NotImplementedError, IndexError, ValueError} from '@aureooms/js-error';
 
+/**
+ * Deque.
+ */
 export default function Deque() {}
 
+/**
+ * Deque.prototype.len.
+ *
+ * @return {Number}
+ */
 Deque.prototype.len = function () {
 	throw new NotImplementedError('len');
 };
 
+/**
+ * Deque.prototype.capacity.
+ *
+ * @return {Number}
+ */
 Deque.prototype.capacity = function () {
-	throw new NotImplementedError('capcity');
+	throw new NotImplementedError('capacity');
 };
 
+/**
+ * Deque.prototype.empty.
+ *
+ * @return {Boolean}
+ */
 Deque.prototype.empty = function () {
 	return this.len() === 0;
 };
 
+/**
+ * Deque.prototype[Symbol.iterator].
+ *
+ * @return {Iterable<any>}
+ */
 Deque.prototype[Symbol.iterator] = function () {
 	return this.values();
 };
 
+/**
+ * Deque.prototype.values.
+ *
+ * @return {Iterable<any>}
+ */
 Deque.prototype.values = function () {
 	throw new NotImplementedError('values');
 };
 
+/**
+ * Deque.prototype.append.
+ *
+ * @param {any} _x
+ */
 Deque.prototype.append = function (_x) {
 	throw new NotImplementedError('append');
 };
 
+/**
+ * Deque.prototype.appendleft.
+ *
+ * @param {any} _x
+ */
 Deque.prototype.appendleft = function (_x) {
 	throw new NotImplementedError('appendleft');
 };
 
+/**
+ * Deque.prototype.clear.
+ *
+ * @return {Deque}
+ */
 Deque.prototype.clear = function () {
 	throw new NotImplementedError('clear');
 };
 
+/**
+ * Deque.prototype.copy.
+ *
+ * @return {Deque}
+ */
 Deque.prototype.copy = function () {
 	throw new NotImplementedError('copy');
 };
 
+/**
+ * Deque.prototype.count.
+ *
+ * @param {any} x
+ * @return {Number}
+ */
 Deque.prototype.count = function (x) {
 	let c = 0;
 
@@ -50,6 +104,11 @@ Deque.prototype.count = function (x) {
 	return c;
 };
 
+/**
+ * Deque.prototype.extend.
+ *
+ * @param {Iterable<any>} iterable
+ */
 Deque.prototype.extend = function (iterable) {
 	for (const x of iterable) {
 		this.append(x);
@@ -58,6 +117,11 @@ Deque.prototype.extend = function (iterable) {
 	return this;
 };
 
+/**
+ * Deque.prototype.extendleft.
+ *
+ * @param {Iterable<any>} iterable
+ */
 Deque.prototype.extendleft = function (iterable) {
 	for (const x of iterable) {
 		this.appendleft(x);
@@ -66,22 +130,46 @@ Deque.prototype.extendleft = function (iterable) {
 	return this;
 };
 
+/**
+ * Deque.prototype._checkbounds.
+ *
+ * @param {Number} i
+ */
 Deque.prototype._checkbounds = function (i) {
 	if (i < 0 || i >= this.len()) {
 		throw new IndexError(i);
 	}
 };
 
+/**
+ * Deque.prototype._where.
+ *
+ * @param {Number} _i
+ * @return {Array}
+ */
 Deque.prototype._where = function (_i) {
 	throw new NotImplementedError('_where');
 };
 
+/**
+ * Deque.prototype.get.
+ *
+ * @param {Number} i
+ * @return {any}
+ */
 Deque.prototype.get = function (i) {
 	const [container, index] = this._where(i);
 
 	return container[index];
 };
 
+/**
+ * Deque.prototype.set.
+ *
+ * @param {Number} i
+ * @param {any} value
+ * @return {Deque}
+ */
 Deque.prototype.set = function (i, value) {
 	const [container, index] = this._where(i);
 
@@ -90,12 +178,26 @@ Deque.prototype.set = function (i, value) {
 	return this;
 };
 
+/**
+ * Deque.prototype._range
+ *
+ * @param {Number} start
+ * @param {Number} stop
+ * @return {Iterable<any>}
+ */
 Deque.prototype._range = function* (start, stop) {
 	for (let i = start; i < stop; ++i) {
 		yield [i, this.get(i)];
 	}
 };
 
+/**
+ * Deque.prototype.index.
+ *
+ * @param {any} x
+ * @param {Number} start
+ * @param {Number} stop
+ */
 Deque.prototype.index = function (x, start = 0, stop = this.len()) {
 	for (const [i, element] of this._range(start, stop)) {
 		if (element === x) {
@@ -106,14 +208,30 @@ Deque.prototype.index = function (x, start = 0, stop = this.len()) {
 	throw new ValueError('not found');
 };
 
+/**
+ * Deque.prototype.pop.
+ *
+ * @return {any}
+ */
 Deque.prototype.pop = function () {
 	throw new NotImplementedError('pop');
 };
 
+/**
+ * Deque.prototype.popleft.
+ *
+ * @return {any}
+ */
 Deque.prototype.popleft = function () {
 	throw new NotImplementedError('popleft');
 };
 
+/**
+ * Deque.prototype.insert.
+ *
+ * @param {Number} i
+ * @param {any} x
+ */
 Deque.prototype.insert = function (i, x) {
 	this._checkbounds(i);
 
@@ -130,6 +248,11 @@ Deque.prototype.insert = function (i, x) {
 	return this;
 };
 
+/**
+ * Deque.prototype.delete.
+ *
+ * @param {Number} i
+ */
 Deque.prototype.delete = function (i) {
 	this._checkbounds(i);
 
@@ -144,6 +267,11 @@ Deque.prototype.delete = function (i) {
 	return this;
 };
 
+/**
+ * Deque.prototype.remove.
+ *
+ * @param {any} value
+ */
 Deque.prototype.remove = function (value) {
 	const i = this.index(value);
 
@@ -152,6 +280,11 @@ Deque.prototype.remove = function (value) {
 	return this;
 };
 
+/**
+ * Deque.prototype.reverse.
+ *
+ * @return {Deque}
+ */
 Deque.prototype.reverse = function () {
 	for (let i = 0, j = this.len(); i < --j; ++i) {
 		const a = this.get(i);
@@ -163,6 +296,11 @@ Deque.prototype.reverse = function () {
 	return this;
 };
 
+/**
+ * Deque.prototype.rotate.
+ *
+ * @param {Number} n
+ */
 Deque.prototype.rotate = function (n) {
 	if (n > 0) {
 		while (n-- > 0) {
diff --git a/src/implementation/EmptyDeque.js b/src/implementation/EmptyDeque.js
index f94a4e1..584d420 100644
--- a/src/implementation/EmptyDeque.js
+++ b/src/implementation/EmptyDeque.js
@@ -1,6 +1,11 @@
 import {IndexError} from '@aureooms/js-error';
 import Deque from './Deque.js';
 
+/**
+ * EmptyDeque.
+ *
+ * @param {Iterable<any>} iterable
+ */
 export default function EmptyDeque(iterable) {
 	if (iterable !== null) {
 		this.extend(iterable);
diff --git a/src/implementation/SingleElementDeque.js b/src/implementation/SingleElementDeque.js
index 96d7179..c2c3d4e 100644
--- a/src/implementation/SingleElementDeque.js
+++ b/src/implementation/SingleElementDeque.js
@@ -1,10 +1,15 @@
 import {IndexError} from '@aureooms/js-error';
 import Deque from './Deque.js';
 
+/**
+ * SingleElementDeque.
+ *
+ * @param {Iterable<any>} iterable
+ */
 export default function SingleElementDeque(iterable) {
-	this.empty = true;
+	this._empty = true;
 
-	this.value = 0;
+	this._value = 0;
 
 	if (iterable !== null) {
 		this.extend(iterable);
@@ -14,7 +19,7 @@ export default function SingleElementDeque(iterable) {
 SingleElementDeque.prototype = new Deque();
 
 SingleElementDeque.prototype.len = function () {
-	return this.empty ? 0 : 1;
+	return this._empty ? 0 : 1;
 };
 
 SingleElementDeque.prototype.capacity = function () {
@@ -22,25 +27,25 @@ SingleElementDeque.prototype.capacity = function () {
 };
 
 SingleElementDeque.prototype.values = function* () {
-	if (this.empty) {
+	if (this._empty) {
 		return;
 	}
 
-	yield this.value;
+	yield this._value;
 };
 
 SingleElementDeque.prototype.append =
 	// eslint-disable-next-line no-multi-assign
 	SingleElementDeque.prototype.appendleft = function (x) {
-		this.empty = false;
-		this.value = x;
+		this._empty = false;
+		this._value = x;
 
 		return this;
 	};
 
 SingleElementDeque.prototype.clear = function () {
-	this.empty = true;
-	this.value = 0;
+	this._empty = true;
+	this._value = 0;
 
 	return this;
 };
@@ -52,32 +57,32 @@ SingleElementDeque.prototype.copy = function () {
 SingleElementDeque.prototype.pop =
 	// eslint-disable-next-line no-multi-assign
 	SingleElementDeque.prototype.popleft = function () {
-		if (this.empty) {
+		if (this._empty) {
 			throw new IndexError('pop / popleft');
 		}
 
-		const value = this.value;
+		const value = this._value;
 
-		this.empty = true;
-		this.value = 0;
+		this._empty = true;
+		this._value = 0;
 
 		return value;
 	};
 
 SingleElementDeque.prototype.get = function (i) {
-	if (this.empty || i !== 0) {
+	if (this._empty || i !== 0) {
 		throw new IndexError(i);
 	}
 
-	return this.value;
+	return this._value;
 };
 
 SingleElementDeque.prototype.set = function (i, value) {
-	if (this.empty || i !== 0) {
+	if (this._empty || i !== 0) {
 		throw new IndexError(i);
 	}
 
-	this.value = value;
+	this._value = value;
 
 	return this;
 };
diff --git a/src/implementation/UnboundedDeque.js b/src/implementation/UnboundedDeque.js
index 9e7e0d8..f3b3bdf 100644
--- a/src/implementation/UnboundedDeque.js
+++ b/src/implementation/UnboundedDeque.js
@@ -1,16 +1,21 @@
 import ArbitrarySizeDeque from './ArbitrarySizeDeque.js';
 
+/**
+ * UnboundedDeque.
+ *
+ * @param {Iterable<any>} iterable
+ */
 export default function UnboundedDeque(iterable) {
-	this.growth = 2;
+	this._growth = 2;
 
-	this.minsize = 10;
+	this._minsize = 10;
 
-	this.currentsize = this.minsize;
+	this._currentsize = this._minsize;
 
 	// eslint-disable-next-line unicorn/no-new-array
-	this.container = new Array(this.currentsize);
+	this._container = new Array(this._currentsize);
 
-	this.center = 0;
+	this._center = 0;
 
 	this.length = 0;
 
@@ -35,17 +40,17 @@ UnboundedDeque.prototype._realloc = function (newsize) {
 
 	this._copy(container);
 
-	this.container = container;
+	this._container = container;
 
-	this.center = 0;
+	this._center = 0;
 
-	this.currentsize = newsize;
+	this._currentsize = newsize;
 };
 
 UnboundedDeque.prototype._shrink = function () {
-	const newsize = Math.max(this.minsize, this.length * this.growth);
+	const newsize = Math.max(this._minsize, this.length * this._growth);
 
-	if (newsize * this.growth >= this.currentsize) {
+	if (newsize * this._growth >= this._currentsize) {
 		return;
 	}
 
@@ -53,11 +58,11 @@ UnboundedDeque.prototype._shrink = function () {
 };
 
 UnboundedDeque.prototype._grow = function (newlen) {
-	if (newlen <= this.currentsize) {
+	if (newlen <= this._currentsize) {
 		return;
 	}
 
-	this._realloc(newlen * this.growth);
+	this._realloc(newlen * this._growth);
 };
 
 UnboundedDeque.prototype.len = function () {
@@ -65,14 +70,14 @@ UnboundedDeque.prototype.len = function () {
 };
 
 UnboundedDeque.prototype.capacity = function () {
-	return this.currentsize;
+	return this._currentsize;
 };
 
 UnboundedDeque.prototype.append = function (x) {
 	this._grow(this.length + 1);
 
-	const i = (this.center + this.length) % this.currentsize;
-	this.container[i] = x;
+	const i = (this._center + this.length) % this._currentsize;
+	this._container[i] = x;
 	++this.length;
 
 	return this;
@@ -81,10 +86,10 @@ UnboundedDeque.prototype.append = function (x) {
 UnboundedDeque.prototype.appendleft = function (x) {
 	this._grow(this.length + 1);
 
-	--this.center;
-	this.center += this.currentsize;
-	this.center %= this.currentsize;
-	this.container[this.center] = x;
+	--this._center;
+	this._center += this._currentsize;
+	this._center %= this._currentsize;
+	this._container[this._center] = x;
 
 	++this.length;
 
@@ -92,12 +97,12 @@ UnboundedDeque.prototype.appendleft = function (x) {
 };
 
 UnboundedDeque.prototype.clear = function () {
-	this.currentsize = this.minsize;
+	this._currentsize = this._minsize;
 
 	// eslint-disable-next-line unicorn/no-new-array
-	this.container = new Array(this.currentsize);
+	this._container = new Array(this._currentsize);
 
-	this.center = 0;
+	this._center = 0;
 
 	this.length = 0;
 
@@ -111,7 +116,7 @@ UnboundedDeque.prototype.copy = function () {
 UnboundedDeque.prototype._where = function (i) {
 	this._checkbounds(i);
 
-	return [this.container, (this.center + i) % this.currentsize];
+	return [this._container, (this._center + i) % this._currentsize];
 };
 
 UnboundedDeque.prototype._popindex = function (container, index) {
diff --git a/yarn.lock b/yarn.lock
index 3a7e644..7f2531c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,30 +2,30 @@
 # yarn lockfile v1
 
 
-"@aureooms/js-collections-deque@^4.0.1":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@aureooms/js-collections-deque/-/js-collections-deque-4.0.1.tgz#bd8b827cdb597d061525c380dd704e338c77bd5f"
-  integrity sha512-dktRVLyep0sUKpqgtG/JseA232KMdlu9t9ePq2wHcng1dZ3+63qW2C+FlKXBktrT1dU92DDxIL6PqnV97kHA1Q==
+"@aureooms/js-collections-deque@^5.0.0":
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/@aureooms/js-collections-deque/-/js-collections-deque-5.0.0.tgz#a574ddc2e53d8e073573f914cec9b130cf5355a8"
+  integrity sha512-28zJhpXGE4D0hQkaZFDYaeA/maUKTTcoHaScbBBzHCu5iy/+sovU7MnSm4URC0EN+R8AH/uVsSS0CFjDMXo6SQ==
   dependencies:
-    "@aureooms/js-error" "^4.0.1"
-
-"@aureooms/js-error@^4.0.1":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@aureooms/js-error/-/js-error-4.0.1.tgz#be2740b3f31a337e0828930c9b70d38113b4dd77"
-  integrity sha512-zsgs6wmnRsKljlusewYiBaFBM/hIJp43b7OwE9ybpLEL4wfXjGP17cJTTAY8gpzALVFwEA5/flxIK0I6gJJLHQ==
+    "@aureooms/js-error" "^5.0.1"
 
 "@aureooms/js-error@^5.0.1":
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/@aureooms/js-error/-/js-error-5.0.1.tgz#474e2f1dd7189f97df770b5cc6f1bda536de262d"
   integrity sha512-BbbpKpp4W8L2x9vL4bas+JtuAe4PMojzTpf21puHPw5p3S+lgKd8SfS9y40pVHi/b3SrQrdpmsaEKjL4xviilQ==
 
-"@aureooms/js-itertools@4.1.0":
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/@aureooms/js-itertools/-/js-itertools-4.1.0.tgz#c731eaee7de0005c6ea41f2f87cca4bdb2d86ca1"
-  integrity sha512-P9TfwQPuXk5T5z6QMMfwLLyzh9QsEu4sGWcBk/P/waWgim/xqr+LDTOHVo7WU4QAty+/5CBX8DuW7MrPVfXt5A==
+"@aureooms/js-error@^5.0.2":
+  version "5.0.2"
+  resolved "https://registry.yarnpkg.com/@aureooms/js-error/-/js-error-5.0.2.tgz#dc2ad2fc2b10365581c32c28222daccc5c3c9600"
+  integrity sha512-HLO95kmZ1nJV5qo8Xq7czHVskFGPkM3l60JFgdTnpvCH6P6lkyWDBplaDB9gI5cPvcRIZDs1HeAHhAlHR/jBxw==
+
+"@aureooms/js-itertools@5.0.0":
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/@aureooms/js-itertools/-/js-itertools-5.0.0.tgz#f0f4e27381b8533ddeb9db7c8f4f05da0522cddd"
+  integrity sha512-LAULGvyCvMjD+V0J4m7PS2QITeG/j3KUxDlSM5rOR7sh0eWZU3jiRMi8H0aBpKhwiVV6AEjXBsMmo3EmhPlJrQ==
   dependencies:
-    "@aureooms/js-collections-deque" "^4.0.1"
-    "@aureooms/js-error" "^4.0.1"
+    "@aureooms/js-collections-deque" "^5.0.0"
+    "@aureooms/js-error" "^5.0.1"
 
 "@babel/code-frame@7.12.11":
   version "7.12.11"
@@ -1330,10 +1330,10 @@
   resolved "https://registry.yarnpkg.com/@istanbuljs/schema/-/schema-0.1.2.tgz#26520bf09abe4a5644cd5414e37125a8954241dd"
   integrity sha512-tsAQNx32a8CoFhjhijUIhI4kccIAgmGhy8LZMZgGfmXcpMbPRUqn5LWmgRttILi6yeGmBJd2xsPkFMs0PzgPCw==
 
-"@js-library/commitlint-config@0.0.3":
-  version "0.0.3"
-  resolved "https://registry.yarnpkg.com/@js-library/commitlint-config/-/commitlint-config-0.0.3.tgz#4ffa7c5cee08e1a947e54d41e0f10f56a50928a2"
-  integrity sha512-45eqMFZt8MbZt0/7VBI9PXu3Ms80v3jKvT1Noj47UDx6YftPClvV3VwDxCfr4muwyhzOErYm2r7k3ETQ1ehxJw==
+"@js-library/commitlint-config@0.0.4":
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/@js-library/commitlint-config/-/commitlint-config-0.0.4.tgz#5243a58b0d4ad36999d4b944c7770c50658c68f5"
+  integrity sha512-l6un9f0HmIJZswqGe5H/HGBkENpqBQv1b36bdLZLXhZEZBTlm2Chbv3J1hJ2kNG8ogh+EFV5nUYQnL3MefLSDQ==
 
 "@mrmlnc/readdir-enhanced@^2.2.1":
   version "2.2.1"