我使用grunt已有两年了，就像我永远看到以下警告一样：
npm WARN deprecated [email protected]: use [cross-spawn](https://github.com/IndigoUnited/node-cross-spawn) or [cross-spawn-async](https://github.com/IndigoUnited/node-cross-spawn-async) instead.
npm WARN deprecated [email protected]: lodash@<2.0.0 is no longer maintained. Upgrade to lodash@^3.0.0
npm WARN deprecated [email protected]: lodash@<3.0.0 is no longer maintained. Upgrade to lodash@^4.0.0.
npm WARN deprecated [email protected]: graceful-fs v3.0.0 and before will fail on node releases >= v6.0. Please update to graceful-fs@^4.0.0 as soon as possible. Use 'npm ls graceful-fs' to find it in the tree.
npm WARN deprecated [email protected]: lodash@<3.0.0 is no longer maintained. Upgrade to lodash@^4.0.0.
即使有这些警告，我的项目仍然可以正常工作。lodash从第一天开始，通常是总是向我发出警告的人。
这是产生这些错误的package.json文件：
{
"name": "xxx",
"version": "0.1.1",
"devDependencies": {
"autoprefixer": "^6.2.3",
"cssnano": "^3.4.0",
"grunt": "^0.4.5",
"grunt-browser-sync": "^1.5.3",
"grunt-contrib-clean": "^1.0.0",
"grunt-contrib-concat": "~0.5.0",
"grunt-contrib-copy": "^1.0.0",
"grunt-contrib-htmlmin": "^0.6.0",
"grunt-contrib-imagemin": "^1.0.0",
"grunt-contrib-sass": "~0.7.4",
"grunt-contrib-uglify": "~0.5.1",
"grunt-contrib-watch": "~0.6.1",
"grunt-critical": "^0.2.0",
"grunt-delete-sync": "0.0.2",
"grunt-newer": "^0.7.0",
"grunt-postcss": "^0.7.1",
"grunt-processhtml": "^0.3.13"
}
}
我猜有些模块或依赖项已经过时了，但是...
1）为什么仍然可以使用？忽略警告是否安全？2）我怎么知道哪个模块已经过时了，我该怎么办？
已弃用意味着它不会进一步开发，但也不会再改变。如果模块依赖于已弃用的程序包，而该程序包中有bug，则唯一的解决方法是升级依赖项。但是，由于没有任何变化，它将一直保持工作状态。
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我来说两句