当我在此处从 github 下载聚合物入门套件的“中级 - 高级用户”版本时,在此处这些说明的第 4 步,我总是收到这些警告:
$ sudo npm install
npm WARN deprecated gulp-minify-css@1.2.4: Please use gulp-clean-css
npm WARN deprecated graceful-fs@3.0.8: graceful-fs version 3 and before will fail on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possible.
npm WARN engine launchpad@0.5.1: wanted: {"node":"^0.12"} (current: {"node":"4.4.2","npm":"2.15.0"})
npm WARN deprecated lodash@1.0.2: lodash@<3.0.0 is no longer maintained. Upgrade to lodash@^4.0.0.
npm WARN optional dep failed, continuing fsevents@1.0.11
npm WARN deprecated graceful-fs@1.2.3: graceful-fs version 3 and before will fail on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possible.
npm WARN deprecated jade@0.26.3: Jade has been renamed to pug, please install the latest version of pug instead of jade
无论我使用什么操作系统:尝试了 Ubuntu 和 Windows (git bash)。
我在全球范围内安装了 npm、bower、gulp,但总是有这些警告。
我认为这可能是一个依赖问题,或者是因为某些聚合物入门套件文件中的一些代码,但我不是专业开发人员,所以我找不到导致问题的原因
虽然当我部署项目时这一切似乎都有效,但我是 web 开发的新手,不确定我是否必须对这些 WARN 闭上眼睛