chore: fix JavaScript lint error including using .push method

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: pierreforstmann

lib/node_modules/@stdlib/_tools/pkgs/browser-entry-points/lib/entries.sync.js

@@ -68,12 +68,12 @@ function entryPoints( pkgs ) {
 		main = pkgs[ i ].id;
 
 		debug( 'Determined main entry point for package: %s (%d of %d). Main: %s', pkg, k, total, main );
-		out[ i ] = {
+		out.push({
 			'id': main,
 			'pkg': pkg,
 			'dir': pkgs[ i ].dir,
 			'entries': []
-		};
+		});
 	}
 	debug( 'Finished determining main entry points.' );