be explicit about arguments to next

src/cursor/abstract_cursor.ts

@@ -361,7 +361,7 @@ export abstract class AbstractCursor<
  return true;
  }
 
- const doc = await next<TSchema>(this, true, false);
+ const doc = await next<TSchema>(this, { blocking: true, transform: false });
 
  if (doc) {
  this[kDocuments].unshift(doc);
@@ -377,7 +377,7 @@ export abstract class AbstractCursor<
  throw new MongoCursorExhaustedError();
  }
 
- return next(this, true);
+ return next(this, { blocking: true, transform: true });
  }
 
  /**
@@ -388,7 +388,7 @@ export abstract class AbstractCursor<
  throw new MongoCursorExhaustedError();
  }
 
- return next(this, false);
+ return next(this, { blocking: false, transform: true });
  }
 
  /**
@@ -693,8 +693,13 @@ export abstract class AbstractCursor<
  */
 async function next<T>(
  cursor: AbstractCursor<T>,
- blocking: boolean,
- transform = true
+ {
+ blocking,
+ transform
+ }: {
+ blocking: boolean;
+ transform: boolean;
+ }
 ): Promise<T | null> {
  const cursorId = cursor[kId];
  if (cursor.closed) {
@@ -723,7 +728,7 @@ async function next<T>(
  // All cursors must operate within a session, one must be made implicitly if not explicitly provided
  const init = promisify(cb => cursor[kInit](cb));
  await init();
- return next(cursor, blocking, transform);
+ return next(cursor, { blocking, transform });
  }
 
  if (cursorIsDead(cursor)) {
@@ -780,7 +785,7 @@ async function next<T>(
  return null;
  }
 
- return next(cursor, blocking, transform);
+ return next(cursor, { blocking, transform });
 }
 
 function cursorIsDead(cursor: AbstractCursor): boolean {
@@ -904,7 +909,7 @@ class ReadableCursorStream extends Readable {
  }
 
  private _readNext() {
- next(this._cursor, true).then(
+ next(this._cursor, { blocking: true, transform: true }).then(
  result => {
  if (result == null) {
  this.push(null);