Tiny refactor (#562)

* simplify getCalls

* refactor PreInitMethodCallBuffer

Author: silesky

packages/browser/src/core/buffer/index.ts

@@ -108,15 +108,11 @@ type MethodCallMap = Partial<Record<PreInitMethodName, PreInitMethodCall[]>>
 export class PreInitMethodCallBuffer {
   private _value = {} as MethodCallMap
 
-  public toArray(): PreInitMethodCall[] {
-    return Object.values(this._value).reduce((acc, v) => {
-      return acc.concat(...v)
-    }, [] as PreInitMethodCall[])
+  toArray(): PreInitMethodCall[] {
+    return ([] as PreInitMethodCall[]).concat(...Object.values(this._value))
   }
 
-  public getCalls<T extends PreInitMethodName>(
-    methodName: T
-  ): PreInitMethodCall<T>[] {
+  getCalls<T extends PreInitMethodName>(methodName: T): PreInitMethodCall<T>[] {
     return (this._value[methodName] ?? []) as PreInitMethodCall<T>[]
   }