From 3b1c5ece2ab21a385962a3574f324b82b96eb8f7 Mon Sep 17 00:00:00 2001
From: Cyril Sobierajewicz <sobierajewicz.cyril@gmail.com>
Date: Sat, 17 Jul 2021 20:04:47 +0200
Subject: [PATCH 01/11] Convert foreign modules to try bundling with esbuild

---
 src/Data/Array.js                   | 48 ++++++++++++++---------------
 src/Data/Array/NonEmpty/Internal.js |  6 ++--
 src/Data/Array/ST.js                | 28 ++++++++---------
 src/Data/Array/ST.purs              |  5 ++-
 src/Data/Array/ST/Partial.js        |  4 +--
 5 files changed, 47 insertions(+), 44 deletions(-)

diff --git a/src/Data/Array.js b/src/Data/Array.js
index a31c6f90..ef3a3ce5 100644
--- a/src/Data/Array.js
+++ b/src/Data/Array.js
@@ -4,7 +4,7 @@
 // Array creation --------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.range = function (start) {
+export var range = function (start) {
   return function (end) {
     var step = start > end ? -1 : 1;
     var result = new Array(step * (end - start) + 1);
@@ -40,9 +40,9 @@ var replicatePolyfill = function (count) {
 };
 
 // In browsers that have Array.prototype.fill we use it, as it's faster.
-exports.replicate = typeof Array.prototype.fill === "function" ? replicateFill : replicatePolyfill;
+export var replicate = typeof Array.prototype.fill === "function" ? replicateFill : replicatePolyfill;
 
-exports.fromFoldableImpl = (function () {
+export var fromFoldableImpl = (function () {
   function Cons(head, tail) {
     this.head = head;
     this.tail = tail;
@@ -77,7 +77,7 @@ exports.fromFoldableImpl = (function () {
 // Array size ------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.length = function (xs) {
+export var length = function (xs) {
   return xs.length;
 };
 
@@ -85,7 +85,7 @@ exports.length = function (xs) {
 // Non-indexed reads -----------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.unconsImpl = function (empty) {
+export var unconsImpl = function (empty) {
   return function (next) {
     return function (xs) {
       return xs.length === 0 ? empty({}) : next(xs[0])(xs.slice(1));
@@ -97,7 +97,7 @@ exports.unconsImpl = function (empty) {
 // Indexed operations ----------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.indexImpl = function (just) {
+export var indexImpl = function (just) {
   return function (nothing) {
     return function (xs) {
       return function (i) {
@@ -107,7 +107,7 @@ exports.indexImpl = function (just) {
   };
 };
 
-exports.findMapImpl = function (nothing) {
+export var findMapImpl = function (nothing) {
   return function (isJust) {
     return function (f) {
       return function (xs) {
@@ -121,7 +121,7 @@ exports.findMapImpl = function (nothing) {
   };
 };
 
-exports.findIndexImpl = function (just) {
+export var findIndexImpl = function (just) {
   return function (nothing) {
     return function (f) {
       return function (xs) {
@@ -134,7 +134,7 @@ exports.findIndexImpl = function (just) {
   };
 };
 
-exports.findLastIndexImpl = function (just) {
+export var findLastIndexImpl = function (just) {
   return function (nothing) {
     return function (f) {
       return function (xs) {
@@ -147,7 +147,7 @@ exports.findLastIndexImpl = function (just) {
   };
 };
 
-exports._insertAt = function (just) {
+export var _insertAt = function (just) {
   return function (nothing) {
     return function (i) {
       return function (a) {
@@ -162,7 +162,7 @@ exports._insertAt = function (just) {
   };
 };
 
-exports._deleteAt = function (just) {
+export var _deleteAt = function (just) {
   return function (nothing) {
     return function (i) {
       return function (l) {
@@ -175,7 +175,7 @@ exports._deleteAt = function (just) {
   };
 };
 
-exports._updateAt = function (just) {
+export var _updateAt = function (just) {
   return function (nothing) {
     return function (i) {
       return function (a) {
@@ -194,11 +194,11 @@ exports._updateAt = function (just) {
 // Transformations -------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.reverse = function (l) {
+export var reverse = function (l) {
   return l.slice().reverse();
 };
 
-exports.concat = function (xss) {
+export var concat = function (xss) {
   if (xss.length <= 10000) {
     // This method is faster, but it crashes on big arrays.
     // So we use it when can and fallback to simple variant otherwise.
@@ -215,13 +215,13 @@ exports.concat = function (xss) {
   return result;
 };
 
-exports.filter = function (f) {
+export var filter = function (f) {
   return function (xs) {
     return xs.filter(f);
   };
 };
 
-exports.partition = function (f) {
+export var partition = function (f) {
   return function (xs) {
     var yes = [];
     var no  = [];
@@ -236,7 +236,7 @@ exports.partition = function (f) {
   };
 };
 
-exports.scanl = function (f) {
+export var scanl = function (f) {
   return function (b) {
     return function (xs) {
       var len = xs.length;
@@ -251,7 +251,7 @@ exports.scanl = function (f) {
   };
 };
 
-exports.scanr = function (f) {
+export var scanr = function (f) {
   return function (b) {
     return function (xs) {
       var len = xs.length;
@@ -270,7 +270,7 @@ exports.scanr = function (f) {
 // Sorting ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.sortByImpl = (function () {
+export var sortByImpl = (function () {
   function mergeFromTo(compare, fromOrdering, xs1, xs2, from, to) {
     var mid;
     var i;
@@ -328,7 +328,7 @@ exports.sortByImpl = (function () {
 // Subarrays -------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.slice = function (s) {
+export var slice = function (s) {
   return function (e) {
     return function (l) {
       return l.slice(s, e);
@@ -340,7 +340,7 @@ exports.slice = function (s) {
 // Zipping ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.zipWith = function (f) {
+export var zipWith = function (f) {
   return function (xs) {
     return function (ys) {
       var l = xs.length < ys.length ? xs.length : ys.length;
@@ -357,7 +357,7 @@ exports.zipWith = function (f) {
 // Folding ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.any = function (p) {
+export var any = function (p) {
   return function (xs) {
     var len = xs.length;
     for (var i = 0; i < len; i++) {
@@ -367,7 +367,7 @@ exports.any = function (p) {
   };
 };
 
-exports.all = function (p) {
+export var all = function (p) {
   return function (xs) {
     var len = xs.length;
     for (var i = 0; i < len; i++) {
@@ -381,7 +381,7 @@ exports.all = function (p) {
 // Partial ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-exports.unsafeIndexImpl = function (xs) {
+export var unsafeIndexImpl = function (xs) {
   return function (n) {
     return xs[n];
   };
diff --git a/src/Data/Array/NonEmpty/Internal.js b/src/Data/Array/NonEmpty/Internal.js
index 40d88a75..e006c851 100644
--- a/src/Data/Array/NonEmpty/Internal.js
+++ b/src/Data/Array/NonEmpty/Internal.js
@@ -1,6 +1,6 @@
 "use strict";
 
-exports.foldr1Impl = function (f) {
+export var foldr1Impl = function (f) {
   return function (xs) {
     var acc = xs[xs.length - 1];
     for (var i = xs.length - 2; i >= 0; i--) {
@@ -10,7 +10,7 @@ exports.foldr1Impl = function (f) {
   };
 };
 
-exports.foldl1Impl = function (f) {
+export var foldl1Impl = function (f) {
   return function (xs) {
     var acc = xs[0];
     var len = xs.length;
@@ -21,7 +21,7 @@ exports.foldl1Impl = function (f) {
   };
 };
 
-exports.traverse1Impl = function () {
+export var traverse1Impl = function () {
   function Cont(fn) {
     this.fn = fn;
   }
diff --git a/src/Data/Array/ST.js b/src/Data/Array/ST.js
index 701010c5..3e29c613 100644
--- a/src/Data/Array/ST.js
+++ b/src/Data/Array/ST.js
@@ -1,10 +1,10 @@
 "use strict";
 
-exports["new"] = function () {
+exports var _new = function () {
   return [];
 };
 
-exports.peekImpl = function (just) {
+export var peekImpl = function (just) {
   return function (nothing) {
     return function (i) {
       return function (xs) {
@@ -16,7 +16,7 @@ exports.peekImpl = function (just) {
   };
 };
 
-exports.poke = function (i) {
+export var poke = function (i) {
   return function (a) {
     return function (xs) {
       return function () {
@@ -28,7 +28,7 @@ exports.poke = function (i) {
   };
 };
 
-exports.popImpl = function (just) {
+export var popImpl = function (just) {
   return function (nothing) {
     return function (xs) {
       return function () {
@@ -38,7 +38,7 @@ exports.popImpl = function (just) {
   };
 };
 
-exports.pushAll = function (as) {
+export var pushAll = function (as) {
   return function (xs) {
     return function () {
       return xs.push.apply(xs, as);
@@ -46,7 +46,7 @@ exports.pushAll = function (as) {
   };
 };
 
-exports.shiftImpl = function (just) {
+export var shiftImpl = function (just) {
   return function (nothing) {
     return function (xs) {
       return function () {
@@ -56,7 +56,7 @@ exports.shiftImpl = function (just) {
   };
 };
 
-exports.unshiftAll = function (as) {
+export var unshiftAll = function (as) {
   return function (xs) {
     return function () {
       return xs.unshift.apply(xs, as);
@@ -64,7 +64,7 @@ exports.unshiftAll = function (as) {
   };
 };
 
-exports.splice = function (i) {
+export var splice = function (i) {
   return function (howMany) {
     return function (bs) {
       return function (xs) {
@@ -76,13 +76,13 @@ exports.splice = function (i) {
   };
 };
 
-exports.unsafeFreeze = function (xs) {
+export var unsafeFreeze = function (xs) {
   return function () {
     return xs;
   };
 };
 
-exports.unsafeThaw = function (xs) {
+export var unsafeThaw = function (xs) {
   return function () {
     return xs;
   };
@@ -94,11 +94,11 @@ function copyImpl(xs) {
   };
 }
 
-exports.freeze = copyImpl;
+export var freeze = copyImpl;
 
-exports.thaw = copyImpl;
+export var thaw = copyImpl;
 
-exports.sortByImpl = (function () {
+export var sortByImpl = (function () {
   function mergeFromTo(compare, fromOrdering, xs1, xs2, from, to) {
     var mid;
     var i;
@@ -151,7 +151,7 @@ exports.sortByImpl = (function () {
   };
 })();
 
-exports.toAssocArray = function (xs) {
+export var toAssocArray = function (xs) {
   return function () {
     var n = xs.length;
     var as = new Array(n);
diff --git a/src/Data/Array/ST.purs b/src/Data/Array/ST.purs
index 2726dd24..c4b1034a 100644
--- a/src/Data/Array/ST.purs
+++ b/src/Data/Array/ST.purs
@@ -78,7 +78,10 @@ foreign import unsafeFreeze :: forall h a. STArray h a -> ST h (Array a)
 foreign import unsafeThaw :: forall h a. Array a -> ST h (STArray h a)
 
 -- | Create a new, empty mutable array.
-foreign import new :: forall h a. ST h (STArray h a)
+foreign import _new :: forall h a. ST h (STArray h a)
+
+new :: forall h a. ST h (STArray h a)
+new = new
 
 empty :: forall h a. Warn (Text "'Data.Array.ST.empty' is deprecated, use 'Data.Array.ST.new' instead") => ST h (STArray h a)
 empty = new
diff --git a/src/Data/Array/ST/Partial.js b/src/Data/Array/ST/Partial.js
index 99308040..ac625cf0 100644
--- a/src/Data/Array/ST/Partial.js
+++ b/src/Data/Array/ST/Partial.js
@@ -1,6 +1,6 @@
 "use strict";
 
-exports.peekImpl = function (i) {
+export var peekImpl = function (i) {
   return function (xs) {
     return function () {
       return xs[i];
@@ -8,7 +8,7 @@ exports.peekImpl = function (i) {
   };
 };
 
-exports.pokeImpl = function (i) {
+export var pokeImpl = function (i) {
   return function (a) {
     return function (xs) {
       return function () {

From 48dcdfc16d32140ee3b70f8439d707919641bbaf Mon Sep 17 00:00:00 2001
From: Cyril Sobierajewicz <sobierajewicz.cyril@gmail.com>
Date: Sun, 18 Jul 2021 17:26:35 +0200
Subject: [PATCH 02/11] fixup! Convert foreign modules to try bundling with
 esbuild

---
 src/Data/Array/ST.js   | 5 +++--
 src/Data/Array/ST.purs | 5 +----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/Data/Array/ST.js b/src/Data/Array/ST.js
index 3e29c613..44d7a5f0 100644
--- a/src/Data/Array/ST.js
+++ b/src/Data/Array/ST.js
@@ -1,8 +1,9 @@
 "use strict";
 
-exports var _new = function () {
+function newSTArray () {
   return [];
-};
+}
+export { newSTArray as new };
 
 export var peekImpl = function (just) {
   return function (nothing) {
diff --git a/src/Data/Array/ST.purs b/src/Data/Array/ST.purs
index c4b1034a..2726dd24 100644
--- a/src/Data/Array/ST.purs
+++ b/src/Data/Array/ST.purs
@@ -78,10 +78,7 @@ foreign import unsafeFreeze :: forall h a. STArray h a -> ST h (Array a)
 foreign import unsafeThaw :: forall h a. Array a -> ST h (STArray h a)
 
 -- | Create a new, empty mutable array.
-foreign import _new :: forall h a. ST h (STArray h a)
-
-new :: forall h a. ST h (STArray h a)
-new = new
+foreign import new :: forall h a. ST h (STArray h a)
 
 empty :: forall h a. Warn (Text "'Data.Array.ST.empty' is deprecated, use 'Data.Array.ST.new' instead") => ST h (STArray h a)
 empty = new

From d01b8126a59e55293a4c280fb3e745d90661749b Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Fri, 11 Mar 2022 14:12:46 -0800
Subject: [PATCH 03/11] Migrated FFI to ES modules via 'lebab'

---
 test/Test/Data/UndefinedOr.js | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/test/Test/Data/UndefinedOr.js b/test/Test/Data/UndefinedOr.js
index e9fad26e..26ba5758 100644
--- a/test/Test/Data/UndefinedOr.js
+++ b/test/Test/Data/UndefinedOr.js
@@ -1,18 +1,18 @@
-exports.undefined = undefined;
+export {undefined};
 
-exports.defined = function (x) {
+export function defined(x) {
   return x;
-};
+}
 
-exports.eqUndefinedOrImpl = function (eq) {
+export function eqUndefinedOrImpl(eq) {
   return function (a) {
     return function (b) {
       return (a === undefined && b === undefined) || eq(a)(b);
     };
   };
-};
+}
 
-exports.compareUndefinedOrImpl = function (lt) {
+export function compareUndefinedOrImpl(lt) {
   return function (eq) {
     return function (gt) {
       return function (compare) {
@@ -27,4 +27,4 @@ exports.compareUndefinedOrImpl = function (lt) {
       };
     };
   };
-};
+}

From bad4137a2d4b02a689b885972d53ab7eccf906b8 Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Fri, 11 Mar 2022 14:12:46 -0800
Subject: [PATCH 04/11] Replaced 'export var' with 'export const'

---
 src/Data/Array.js                   | 48 ++++++++++++++---------------
 src/Data/Array/NonEmpty/Internal.js |  6 ++--
 src/Data/Array/ST.js                | 26 ++++++++--------
 src/Data/Array/ST/Partial.js        |  4 +--
 4 files changed, 42 insertions(+), 42 deletions(-)

diff --git a/src/Data/Array.js b/src/Data/Array.js
index ef3a3ce5..9e2e9d50 100644
--- a/src/Data/Array.js
+++ b/src/Data/Array.js
@@ -4,7 +4,7 @@
 // Array creation --------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var range = function (start) {
+export const range = function (start) {
   return function (end) {
     var step = start > end ? -1 : 1;
     var result = new Array(step * (end - start) + 1);
@@ -40,9 +40,9 @@ var replicatePolyfill = function (count) {
 };
 
 // In browsers that have Array.prototype.fill we use it, as it's faster.
-export var replicate = typeof Array.prototype.fill === "function" ? replicateFill : replicatePolyfill;
+export const replicate = typeof Array.prototype.fill === "function" ? replicateFill : replicatePolyfill;
 
-export var fromFoldableImpl = (function () {
+export const fromFoldableImpl = (function () {
   function Cons(head, tail) {
     this.head = head;
     this.tail = tail;
@@ -77,7 +77,7 @@ export var fromFoldableImpl = (function () {
 // Array size ------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var length = function (xs) {
+export const length = function (xs) {
   return xs.length;
 };
 
@@ -85,7 +85,7 @@ export var length = function (xs) {
 // Non-indexed reads -----------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var unconsImpl = function (empty) {
+export const unconsImpl = function (empty) {
   return function (next) {
     return function (xs) {
       return xs.length === 0 ? empty({}) : next(xs[0])(xs.slice(1));
@@ -97,7 +97,7 @@ export var unconsImpl = function (empty) {
 // Indexed operations ----------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var indexImpl = function (just) {
+export const indexImpl = function (just) {
   return function (nothing) {
     return function (xs) {
       return function (i) {
@@ -107,7 +107,7 @@ export var indexImpl = function (just) {
   };
 };
 
-export var findMapImpl = function (nothing) {
+export const findMapImpl = function (nothing) {
   return function (isJust) {
     return function (f) {
       return function (xs) {
@@ -121,7 +121,7 @@ export var findMapImpl = function (nothing) {
   };
 };
 
-export var findIndexImpl = function (just) {
+export const findIndexImpl = function (just) {
   return function (nothing) {
     return function (f) {
       return function (xs) {
@@ -134,7 +134,7 @@ export var findIndexImpl = function (just) {
   };
 };
 
-export var findLastIndexImpl = function (just) {
+export const findLastIndexImpl = function (just) {
   return function (nothing) {
     return function (f) {
       return function (xs) {
@@ -147,7 +147,7 @@ export var findLastIndexImpl = function (just) {
   };
 };
 
-export var _insertAt = function (just) {
+export const _insertAt = function (just) {
   return function (nothing) {
     return function (i) {
       return function (a) {
@@ -162,7 +162,7 @@ export var _insertAt = function (just) {
   };
 };
 
-export var _deleteAt = function (just) {
+export const _deleteAt = function (just) {
   return function (nothing) {
     return function (i) {
       return function (l) {
@@ -175,7 +175,7 @@ export var _deleteAt = function (just) {
   };
 };
 
-export var _updateAt = function (just) {
+export const _updateAt = function (just) {
   return function (nothing) {
     return function (i) {
       return function (a) {
@@ -194,11 +194,11 @@ export var _updateAt = function (just) {
 // Transformations -------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var reverse = function (l) {
+export const reverse = function (l) {
   return l.slice().reverse();
 };
 
-export var concat = function (xss) {
+export const concat = function (xss) {
   if (xss.length <= 10000) {
     // This method is faster, but it crashes on big arrays.
     // So we use it when can and fallback to simple variant otherwise.
@@ -215,13 +215,13 @@ export var concat = function (xss) {
   return result;
 };
 
-export var filter = function (f) {
+export const filter = function (f) {
   return function (xs) {
     return xs.filter(f);
   };
 };
 
-export var partition = function (f) {
+export const partition = function (f) {
   return function (xs) {
     var yes = [];
     var no  = [];
@@ -236,7 +236,7 @@ export var partition = function (f) {
   };
 };
 
-export var scanl = function (f) {
+export const scanl = function (f) {
   return function (b) {
     return function (xs) {
       var len = xs.length;
@@ -251,7 +251,7 @@ export var scanl = function (f) {
   };
 };
 
-export var scanr = function (f) {
+export const scanr = function (f) {
   return function (b) {
     return function (xs) {
       var len = xs.length;
@@ -270,7 +270,7 @@ export var scanr = function (f) {
 // Sorting ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var sortByImpl = (function () {
+export const sortByImpl = (function () {
   function mergeFromTo(compare, fromOrdering, xs1, xs2, from, to) {
     var mid;
     var i;
@@ -328,7 +328,7 @@ export var sortByImpl = (function () {
 // Subarrays -------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var slice = function (s) {
+export const slice = function (s) {
   return function (e) {
     return function (l) {
       return l.slice(s, e);
@@ -340,7 +340,7 @@ export var slice = function (s) {
 // Zipping ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var zipWith = function (f) {
+export const zipWith = function (f) {
   return function (xs) {
     return function (ys) {
       var l = xs.length < ys.length ? xs.length : ys.length;
@@ -357,7 +357,7 @@ export var zipWith = function (f) {
 // Folding ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var any = function (p) {
+export const any = function (p) {
   return function (xs) {
     var len = xs.length;
     for (var i = 0; i < len; i++) {
@@ -367,7 +367,7 @@ export var any = function (p) {
   };
 };
 
-export var all = function (p) {
+export const all = function (p) {
   return function (xs) {
     var len = xs.length;
     for (var i = 0; i < len; i++) {
@@ -381,7 +381,7 @@ export var all = function (p) {
 // Partial ---------------------------------------------------------------------
 //------------------------------------------------------------------------------
 
-export var unsafeIndexImpl = function (xs) {
+export const unsafeIndexImpl = function (xs) {
   return function (n) {
     return xs[n];
   };
diff --git a/src/Data/Array/NonEmpty/Internal.js b/src/Data/Array/NonEmpty/Internal.js
index e006c851..63fde37e 100644
--- a/src/Data/Array/NonEmpty/Internal.js
+++ b/src/Data/Array/NonEmpty/Internal.js
@@ -1,6 +1,6 @@
 "use strict";
 
-export var foldr1Impl = function (f) {
+export const foldr1Impl = function (f) {
   return function (xs) {
     var acc = xs[xs.length - 1];
     for (var i = xs.length - 2; i >= 0; i--) {
@@ -10,7 +10,7 @@ export var foldr1Impl = function (f) {
   };
 };
 
-export var foldl1Impl = function (f) {
+export const foldl1Impl = function (f) {
   return function (xs) {
     var acc = xs[0];
     var len = xs.length;
@@ -21,7 +21,7 @@ export var foldl1Impl = function (f) {
   };
 };
 
-export var traverse1Impl = function () {
+export const traverse1Impl = function () {
   function Cont(fn) {
     this.fn = fn;
   }
diff --git a/src/Data/Array/ST.js b/src/Data/Array/ST.js
index 44d7a5f0..d3b41dbe 100644
--- a/src/Data/Array/ST.js
+++ b/src/Data/Array/ST.js
@@ -5,7 +5,7 @@ function newSTArray () {
 }
 export { newSTArray as new };
 
-export var peekImpl = function (just) {
+export const peekImpl = function (just) {
   return function (nothing) {
     return function (i) {
       return function (xs) {
@@ -17,7 +17,7 @@ export var peekImpl = function (just) {
   };
 };
 
-export var poke = function (i) {
+export const poke = function (i) {
   return function (a) {
     return function (xs) {
       return function () {
@@ -29,7 +29,7 @@ export var poke = function (i) {
   };
 };
 
-export var popImpl = function (just) {
+export const popImpl = function (just) {
   return function (nothing) {
     return function (xs) {
       return function () {
@@ -39,7 +39,7 @@ export var popImpl = function (just) {
   };
 };
 
-export var pushAll = function (as) {
+export const pushAll = function (as) {
   return function (xs) {
     return function () {
       return xs.push.apply(xs, as);
@@ -47,7 +47,7 @@ export var pushAll = function (as) {
   };
 };
 
-export var shiftImpl = function (just) {
+export const shiftImpl = function (just) {
   return function (nothing) {
     return function (xs) {
       return function () {
@@ -57,7 +57,7 @@ export var shiftImpl = function (just) {
   };
 };
 
-export var unshiftAll = function (as) {
+export const unshiftAll = function (as) {
   return function (xs) {
     return function () {
       return xs.unshift.apply(xs, as);
@@ -65,7 +65,7 @@ export var unshiftAll = function (as) {
   };
 };
 
-export var splice = function (i) {
+export const splice = function (i) {
   return function (howMany) {
     return function (bs) {
       return function (xs) {
@@ -77,13 +77,13 @@ export var splice = function (i) {
   };
 };
 
-export var unsafeFreeze = function (xs) {
+export const unsafeFreeze = function (xs) {
   return function () {
     return xs;
   };
 };
 
-export var unsafeThaw = function (xs) {
+export const unsafeThaw = function (xs) {
   return function () {
     return xs;
   };
@@ -95,11 +95,11 @@ function copyImpl(xs) {
   };
 }
 
-export var freeze = copyImpl;
+export const freeze = copyImpl;
 
-export var thaw = copyImpl;
+export const thaw = copyImpl;
 
-export var sortByImpl = (function () {
+export const sortByImpl = (function () {
   function mergeFromTo(compare, fromOrdering, xs1, xs2, from, to) {
     var mid;
     var i;
@@ -152,7 +152,7 @@ export var sortByImpl = (function () {
   };
 })();
 
-export var toAssocArray = function (xs) {
+export const toAssocArray = function (xs) {
   return function () {
     var n = xs.length;
     var as = new Array(n);
diff --git a/src/Data/Array/ST/Partial.js b/src/Data/Array/ST/Partial.js
index ac625cf0..e7d6a5e5 100644
--- a/src/Data/Array/ST/Partial.js
+++ b/src/Data/Array/ST/Partial.js
@@ -1,6 +1,6 @@
 "use strict";
 
-export var peekImpl = function (i) {
+export const peekImpl = function (i) {
   return function (xs) {
     return function () {
       return xs[i];
@@ -8,7 +8,7 @@ export var peekImpl = function (i) {
   };
 };
 
-export var pokeImpl = function (i) {
+export const pokeImpl = function (i) {
   return function (a) {
     return function (xs) {
       return function () {

From f4e80c6ee1aa1efe47ecac277d691d19f841c3ef Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Fri, 11 Mar 2022 14:12:47 -0800
Subject: [PATCH 05/11] Removed '"use strict";' in FFI files

---
 src/Data/Array.js                   | 2 --
 src/Data/Array/NonEmpty/Internal.js | 2 --
 src/Data/Array/ST.js                | 2 --
 src/Data/Array/ST/Partial.js        | 2 --
 4 files changed, 8 deletions(-)

diff --git a/src/Data/Array.js b/src/Data/Array.js
index 9e2e9d50..490c53fc 100644
--- a/src/Data/Array.js
+++ b/src/Data/Array.js
@@ -1,5 +1,3 @@
-"use strict";
-
 //------------------------------------------------------------------------------
 // Array creation --------------------------------------------------------------
 //------------------------------------------------------------------------------
diff --git a/src/Data/Array/NonEmpty/Internal.js b/src/Data/Array/NonEmpty/Internal.js
index 63fde37e..97b620ef 100644
--- a/src/Data/Array/NonEmpty/Internal.js
+++ b/src/Data/Array/NonEmpty/Internal.js
@@ -1,5 +1,3 @@
-"use strict";
-
 export const foldr1Impl = function (f) {
   return function (xs) {
     var acc = xs[xs.length - 1];
diff --git a/src/Data/Array/ST.js b/src/Data/Array/ST.js
index d3b41dbe..57709b79 100644
--- a/src/Data/Array/ST.js
+++ b/src/Data/Array/ST.js
@@ -1,5 +1,3 @@
-"use strict";
-
 function newSTArray () {
   return [];
 }
diff --git a/src/Data/Array/ST/Partial.js b/src/Data/Array/ST/Partial.js
index e7d6a5e5..b289097c 100644
--- a/src/Data/Array/ST/Partial.js
+++ b/src/Data/Array/ST/Partial.js
@@ -1,5 +1,3 @@
-"use strict";
-
 export const peekImpl = function (i) {
   return function (xs) {
     return function () {

From fef7da4595f25bb348e077de22086478329d49df Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Fri, 11 Mar 2022 14:12:47 -0800
Subject: [PATCH 06/11] Update to CI to use 'unstable' purescript

---
 .github/workflows/ci.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 43d2897a..b6ebf3ad 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,8 @@ jobs:
       - uses: actions/checkout@v2
 
       - uses: purescript-contrib/setup-purescript@main
+        with:
+          purescript: "unstable"
 
       - uses: actions/setup-node@v1
         with:

From f3252de51dd2a6cb62e9519d73f7c930efd75085 Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Fri, 11 Mar 2022 14:12:47 -0800
Subject: [PATCH 07/11] Update pulp to 16.0.0-0 and psa to 0.8.2

---
 package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 33cc5a38..ee9cb3aa 100644
--- a/package.json
+++ b/package.json
@@ -10,8 +10,8 @@
   },
   "devDependencies": {
     "eslint": "^7.15.0",
-    "pulp": "^15.0.0",
-    "purescript-psa": "^0.8.0",
+    "pulp": "16.0.0-0",
+    "purescript-psa": "^0.8.2",
     "rimraf": "^3.0.2"
   }
 }

From ccab81636ad55a8653198f9af9b210598c133cdc Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Fri, 11 Mar 2022 14:59:18 -0800
Subject: [PATCH 08/11] Update Bower dependencies to master

---
 bower.json | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/bower.json b/bower.json
index c0db5d66..1efbba33 100644
--- a/bower.json
+++ b/bower.json
@@ -15,23 +15,23 @@
     "package.json"
   ],
   "dependencies": {
-    "purescript-bifunctors": "^5.0.0",
-    "purescript-control": "^5.0.0",
-    "purescript-foldable-traversable": "^5.0.0",
-    "purescript-maybe": "^5.0.0",
-    "purescript-nonempty": "^6.0.0",
-    "purescript-partial": "^3.0.0",
-    "purescript-prelude": "^5.0.0",
-    "purescript-st": "^5.0.0",
-    "purescript-tailrec": "^5.0.0",
-    "purescript-tuples": "^6.0.0",
-    "purescript-unfoldable": "^5.0.0",
-    "purescript-unsafe-coerce": "^5.0.0"
+    "purescript-bifunctors": "master",
+    "purescript-control": "master",
+    "purescript-foldable-traversable": "master",
+    "purescript-maybe": "master",
+    "purescript-nonempty": "master",
+    "purescript-partial": "master",
+    "purescript-prelude": "master",
+    "purescript-st": "master",
+    "purescript-tailrec": "master",
+    "purescript-tuples": "master",
+    "purescript-unfoldable": "master",
+    "purescript-unsafe-coerce": "master"
   },
   "devDependencies": {
-    "purescript-assert": "^5.0.0",
-    "purescript-console": "^5.0.0",
-    "purescript-const": "^5.0.0",
-    "purescript-minibench": "^3.0.0"
+    "purescript-assert": "master",
+    "purescript-console": "master",
+    "purescript-const": "master",
+    "purescript-minibench": "master"
   }
 }

From b7237a7e34c10af17761c71da225297243496a1c Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Mon, 14 Mar 2022 16:23:31 -0700
Subject: [PATCH 09/11] Update .eslintrc.json to ES6

---
 .eslintrc.json | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/.eslintrc.json b/.eslintrc.json
index 84cef4f0..1c6afb9d 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,11 +1,9 @@
 {
   "parserOptions": {
-    "ecmaVersion": 5
+    "ecmaVersion": 6,
+    "sourceType": "module"
   },
   "extends": "eslint:recommended",
-  "env": {
-    "commonjs": true
-  },
   "rules": {
     "strict": [2, "global"],
     "block-scoped-var": 2,

From 1981a5047169f665a00abfaa25dc15bdcafeb597 Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Mon, 14 Mar 2022 16:25:12 -0700
Subject: [PATCH 10/11] Fix FFI for undefined

---
 test/Test/Data/UndefinedOr.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/Test/Data/UndefinedOr.js b/test/Test/Data/UndefinedOr.js
index 26ba5758..18017cb2 100644
--- a/test/Test/Data/UndefinedOr.js
+++ b/test/Test/Data/UndefinedOr.js
@@ -1,4 +1,5 @@
-export {undefined};
+const undefinedImpl = undefined;
+export {undefinedImpl as undefined};
 
 export function defined(x) {
   return x;

From 0eef37b622309b473de7e6653b589b2e3a1e9f2b Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@protonmail.com>
Date: Mon, 14 Mar 2022 16:25:55 -0700
Subject: [PATCH 11/11] Added changelog entry

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 85c6bb48..8e03ea40 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ Notable changes to this project are documented in this file. The format is based
 ## [Unreleased]
 
 Breaking changes:
+- Migrate FFI to ES modules (#218 by @kl0tl and @JordanMartinez)
 
 New features: