From 71152adf47ae0c7a949d900143318b58a2fdc1fa Mon Sep 17 00:00:00 2001
From: Simon Warta <simon@warta.it>
Date: Thu, 8 Dec 2022 15:35:27 +0100
Subject: [PATCH 1/2] Bump build target to es2020

---
 CHANGELOG.md  | 2 ++
 tsconfig.json | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22812b16..1930a3ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,8 @@ and this project adheres to
   the end of 2022. Then all potential issues should be fixed.
 - `fromJSON`/`toJSON` are not generated anymore. They were never needed for
   CosmJS and do not produce a Cosmos SDK compatible JSON.
+- The TypeScript build target is now ES2020,
+  [analogue to CosmJS 0.30](https://github.com/cosmos/cosmjs/issues/1002).
 
 ## [0.5.2] - 2022-10-11
 
diff --git a/tsconfig.json b/tsconfig.json
index 5f1b7759..400671eb 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,7 +4,7 @@
     "declaration": true,
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
-    "lib": ["es2018"],
+    "lib": ["es2020"],
     "module": "commonjs",
     "moduleResolution": "node",
     "newLine": "LF",
@@ -20,7 +20,7 @@
     "rootDir": "src",
     "sourceMap": true,
     "strict": true,
-    "target": "es2018"
+    "target": "es2020"
   },
   "include": ["src/**/*"]
 }

From 25f484443fb09b2e70c3435fbaf0843a0ab57e6b Mon Sep 17 00:00:00 2001
From: Simon Warta <simon@warta.it>
Date: Thu, 8 Dec 2022 15:35:35 +0100
Subject: [PATCH 2/2] Add note on comment output

---
 tsconfig.json | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tsconfig.json b/tsconfig.json
index 400671eb..8769788b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -15,6 +15,9 @@
     "noUnusedParameters": false,
     "outDir": "build",
     "pretty": true,
+    // We want comments in the .d.ts files. TS does not allow us to remove comments
+    // from .js output only (https://github.com/microsoft/TypeScript/issues/45187, https://github.com/microsoft/TypeScript/issues/13318).
+    // So minifiers have to strip them off later on.
     "removeComments": false,
     "resolveJsonModule": true,
     "rootDir": "src",