From 9438f50397736d3bc9738176a307162fd64d154b Mon Sep 17 00:00:00 2001
From: Nino Annighoefer <nino@ninoan.com>
Date: Sat, 9 Sep 2023 17:24:24 +0100
Subject: [PATCH 1/3] Add section on JavaScript interop for custom types

For #200.
---
 book-src/tour/custom-types.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/book-src/tour/custom-types.md b/book-src/tour/custom-types.md
index 5a03a13a..024e30ee 100644
--- a/book-src/tour/custom-types.md
+++ b/book-src/tour/custom-types.md
@@ -250,3 +250,23 @@ LoggedIn("Kim")
 guest,
 {logged_in, <<"Kim">>}.
 ```
+
+## JavaScript interop
+
+When compiling to JavaScript, each constructor becomes a class of the same name.
+Each of the generated JavaScript classes has a constructor with the same
+arguments as the original type constructor.
+
+```gleam
+// Gleam
+Guest
+LoggedIn("Kim")
+Cat(name: "Jinx", cuteness: 2002)
+```
+
+```javascript
+// JavaScript
+new Guest();              // => {}
+new LoggedIn("Kim");      // => { 0: "Kim" }
+new Animal("Jinx", 2002); // => { name: "Jinx", cuteness: 2002 }
+```

From 35e63050b57576df014a7c0b62ff077925eb8c04 Mon Sep 17 00:00:00 2001
From: Nino Annighoefer <nino@ninoan.com>
Date: Sat, 9 Sep 2023 18:05:28 +0100
Subject: [PATCH 2/3] Remove comments and add import statement

---
 book-src/tour/custom-types.md | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/book-src/tour/custom-types.md b/book-src/tour/custom-types.md
index 024e30ee..185af136 100644
--- a/book-src/tour/custom-types.md
+++ b/book-src/tour/custom-types.md
@@ -266,7 +266,9 @@ Cat(name: "Jinx", cuteness: 2002)
 
 ```javascript
 // JavaScript
-new Guest();              // => {}
-new LoggedIn("Kim");      // => { 0: "Kim" }
-new Animal("Jinx", 2002); // => { name: "Jinx", cuteness: 2002 }
+import { Guest, LoggedIn, Animal } from "my_module.mjs";
+
+new Guest();
+new LoggedIn("Kim");
+new Animal("Jinx", 2002);
 ```

From e872674d031c6f718922738b1d8f597c46b89a25 Mon Sep 17 00:00:00 2001
From: Nino Annighoefer <nino@ninoan.com>
Date: Mon, 11 Sep 2023 09:29:02 +0100
Subject: [PATCH 3/3] Fix mistake whoops!

---
 book-src/tour/custom-types.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/book-src/tour/custom-types.md b/book-src/tour/custom-types.md
index 185af136..20a96798 100644
--- a/book-src/tour/custom-types.md
+++ b/book-src/tour/custom-types.md
@@ -266,9 +266,9 @@ Cat(name: "Jinx", cuteness: 2002)
 
 ```javascript
 // JavaScript
-import { Guest, LoggedIn, Animal } from "my_module.mjs";
+import { Guest, LoggedIn, Cat } from "my_module.mjs";
 
 new Guest();
 new LoggedIn("Kim");
-new Animal("Jinx", 2002);
+new Cat("Jinx", 2002);
 ```