dev: switch to pnpm

Author: sandydoo

Diff for: README.md

@@ -38,17 +38,11 @@ Note that malicious code submitted via forked pull request can, once merged into
 Install the dependencies
 
 ```bash
-$ yarn install
+$ pnpm install
 ```
 
 Build the typescript
 
 ```bash
-$ yarn build
-```
-
-Run the tests :heavy_check_mark:
-
-```bash
-$ yarn test
+$ pnpm build
 ```

Diff for: devenv.nix

@@ -18,8 +18,8 @@ in
   languages.javascript = {
     enable = true;
     package = nodejs;
-    yarn.enable = true;
-    yarn.install.enable = true;
+    pnpm.enable = true;
+    pnpm.install.enable = true;
   };
 
   git-hooks.hooks = {
@@ -32,7 +32,7 @@ in
       enable = true;
       files = "src/.*$";
       pass_filenames = false;
-      entry = "devenv shell -- yarn build";
+      entry = "devenv shell -- pnpm build";
     };
   };
 }