module-loader.php

<?php
/**
 * Module loader: Ensure newest version is loaded when multiple plugins bundle
 * the same module. Module must define: name, version (YYYYMMDD), and load().
 * The function `load()` is called on `plugins_loaded` action at priority 0.
 */
return function ( $module ) {

  $name     = $module->name;
  $priority = 99999999 - absint( $module->version );

  remove_all_filters( $name, $priority ); // Same version

  add_action( $name, function () use ( $module ) {
    remove_all_filters( $module->name );  // This instance wins
    $module->load();
  }, $priority );

  $ensure_action = function () use ( $name ) {
    if ( ! did_action( $name ) ) do_action( $name );
  };

  if ( doing_action( 'plugins_loaded' ) || did_action( 'plugins_loaded' ) ) {
    $ensure_action();
    return;
  }

  add_action( 'plugins_loaded', $ensure_action, 0 );
  add_action( 'after_setup_theme', $ensure_action, 0 );

  if (method_exists( $module, 'init' )) $module->init();
};