Merge pull request #52 from confio/bump-target-to-es2020

Bump target to es2020

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
 

tsconfig.json

@@ -4,7 +4,7 @@
     "declaration": true,
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
-    "lib": ["es2018"],
+    "lib": ["es2020"],
     "module": "commonjs",
     "moduleResolution": "node",
     "newLine": "LF",
@@ -15,12 +15,15 @@
     "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",
     "sourceMap": true,
     "strict": true,
-    "target": "es2018"
+    "target": "es2020"
   },
   "include": ["src/**/*"]
 }