以角度6安装slickgrid时遇到的问题。我遵循了此link提供的安装步骤。但是，当我在app.module.ts中导入slickgrid模块时，我的代码就失败了。 以下是我遇到的错误，
ERROR in ./node_modules/postcss/lib/input.js
Module not found: Error: Can't resolve 'path' in '/Users/jattardi/code/myproject/node_modules/postcss/lib'
ERROR in ./node_modules/postcss/lib/map-generator.js
Module not found: Error: Can't resolve 'path' in '/Users/jattardi/code/myproject/node_modules/postcss/lib'
ERROR in ./node_modules/postcss/lib/previous-map.js
Module not found: Error: Can't resolve 'path' in '/Users/jattardi/code/myproject/node_modules/postcss/lib'
ERROR in ./node_modules/htmlparser2/lib/WritableStream.js
Module not found: Error: Can't resolve 'stream' in '/Users/jattardi/code/myproject/node_modules/htmlparser2/lib'