Remove engines.pnpm/yarn/npm in the the output package.json (#261)

* Ignore engines.pnpm/yarn/npm

Co-authored-by: Dimitri POSTOLOV <dmytropostolov@gmail.com>

---------

Co-authored-by: Dotan Simha <dotansimha@gmail.com>
Co-authored-by: Dimitri POSTOLOV <dmytropostolov@gmail.com>

.changeset/shaggy-lamps-greet.md

@@ -0,0 +1,5 @@
+---
+'bob-the-bundler': patch
+---
+
+Remove engines.pnpm/yarn/npm in the the output package.json

CHANGELOG.md

@@ -316,16 +316,16 @@
           | false
           | {
               /** Files to copy from the package root to dist */
-              copy?: Array<string>;
-            };
+              copy?: Array<string>
+            }
         /** Whether the package should be checked. */
         check?:
           | false
           | {
               /** Exports within the package that should not be checked. */
-              skip?: Array<string>;
-            };
-      };
+              skip?: Array<string>
+            }
+      }
   ```
 
 ## 2.0.0

src/commands/build.ts

@@ -373,6 +373,15 @@ function rewritePackageJson(pkg: Record<string, any>) {
   fields.forEach(field => {
     if (pkg[field] !== undefined) {
       newPkg[field] = pkg[field];
+      if (field === 'engines') {
+        // remove all package managers from engines field
+        const ignoredPackageManagers = ['npm', 'yarn', 'pnpm'];
+        for (const packageManager of ignoredPackageManagers) {
+          if (newPkg[field][packageManager]) {
+            delete newPkg[field][packageManager];
+          }
+        }
+      }
     }
   });
 

test/__fixtures__/simple/package.json

@@ -2,7 +2,8 @@
   "name": "simple",
   "type": "module",
   "engines": {
-    "node": ">= 12.0.0"
+    "node": ">= 12.0.0",
+    "pnpm": ">= 8.0.0"
   },
   "main": "dist/cjs/index.js",
   "module": "dist/esm/index.js",