Build: switch from yarn1 to pnpm

Author: redblobgames

README.org

@@ -12,15 +12,7 @@
 
 * Install
 
-If you use =yarn= 1:
-
-#+begin_src sh
-yarn global add esbuild
-yarn install
-./build.sh
-#+end_src
-
-If you use =npm=:
+With =npm= or =pnpm=:
 
 #+begin_src sh
 npm install -g esbuild

pnpm-lock.yaml

@@ -1,7 +1,7 @@
 {
     "compilerOptions": {
         "target": "esnext",
-        "module": "nodenext",
+        "module": "bundler",
         "allowImportingTsExtensions": true
     },
     "include": ["./*.ts"],