fix: fix npm tests runner

Author: zdm

lib/package.js

@@ -613,7 +613,7 @@ export default class Package {
     }
 
     async runScript ( script, args ) {
-        return this.npm.runScript( script, { args } );
+        return this.npm.api.runScript( script, { args } );
     }
 
     async getOutdatedDependencies ( { all } = {} ) {
@@ -934,7 +934,7 @@ export default class Package {
             res = result( [ 200, "No tests to run" ] );
         }
         else {
-            res = await this.npm.runScript( "test", { log } );
+            res = await this.npm.api.runScript( "test", { log } );
         }
 
         if ( log ) {