Ignore flipper version when computing plugin checksum

Summary: To be able to save min required Flipper version into the package.json, we need to ignore it when computing hashsum. Otherwise hashsum of plugin will depend on the current Flipper version and so bumping Flipper will change hashsums of all plugins.

Reviewed By: passy

Differential Revision: D28342965

fbshipit-source-id: 289ec7e673bce1f2b1cbb402b56c5b1b31fd84da

desktop/pkg-lib/src/computePackageChecksum.ts

@@ -55,6 +55,9 @@ export default async function computePackageChecksum(
       if (packageJson.version) {
         packageJson.version = '0.0.0';
       }
+      if (packageJson.engines && packageJson.engines.flipper) {
+        packageJson.engines.flipper = '0.0.0';
+      }
       hash.write(JSON.stringify(packageJson));
     } else {
       // add hash of file content