使用 composer 安装 laravel 时报错, 如下:
[ReflectionException]
Class Fxp\Composer\AssetPlugin\Repository\NpmRepository does not exist
[ErrorException]
Declaration of Fxp\Composer\AssetPlugin\Repository\AbstractAssetsRepository::whatProvides() should be compatible with Composer\Repository\ComposerRepository::whatProvides(Composer\DependencyResol
ver\Pool $pool, $name, $bypassFilters = false)
按如下命令可解决
sudo composer global update fxp/composer-asset-plugin --no-plugins
或
php composer.phar global update fxp/composer-asset-plugin --no-plugins
参考[点这里]
Class Fxp\Composer\AssetPlugin\Repository\NpmRepository does not exist
原文：http://www.cnblogs.com/debmzhang/p/5439663.html