node.js - 如何解决 npm install 在非 MAC 操作系统上抛出 fsevents 警告？

Question

npm install 命令引发以下警告 -

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.1.2 (node_modules\rea
ct-scripts\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@
1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}
)
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules\ch
okidar\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@
1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}
)

警告显然导致我们的 Jenkins Job 标记为失败，所以我们只是试图摆脱它。

我已经检查过 https://stackoverflow.com/a/42938398/351903但是，与那里提到的不同，我的设置中没有任何/node_modules/fserrors。另外，我的 package.json 不包含 fserrors。以下是我的 package.json -

{
  "name": "mvc-panel",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "bootstrap": "^3.3.7",
    "jquery": "^3.2.1",
    "material-ui": "^0.18.3",
    "qs": "^6.4.0",
    "react": "^15.5.4",
    "react-alert": "^2.1.2",
    "react-bootstrap-table": "^3.4.1",
    "react-dom": "^15.5.4",
    "react-loader": "^2.4.2",
    "react-router-dom": "^4.1.1",
    "react-tap-event-plugin": "^2.0.1",
    "serve": "^6.0.0"
  },
  "devDependencies": {
    "datatables.net": "^1.10.15",
    "jquery": "^3.2.1",
    "react-scripts": "^1.0.7"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  }
}

我可以在 node_modules\react-scripts\package.json 的 react-scripts 的 package.json 中看到 fsevents(在我的 package.json 的 devDependencies 下定义) -

{
  "_args": [
    [
      {
        "raw": "react-scripts@^1.0.7",
        "scope": null,
        "escapedName": "react-scripts",
        "name": "react-scripts",
        "rawSpec": "^1.0.7",
        "spec": ">=1.0.7 <2.0.0",
        "type": "range"
      },
      "D:\\Sandeepan\\Payu MVC\\backend codebase\\MVC2.0\\panel\\mvc-panel"
    ]
  ],
  "_from": "react-scripts@>=1.0.7 <2.0.0",
  "_id": "react-scripts@1.0.14",
  "_inCache": true,
  "_location": "/react-scripts",
  "_nodeVersion": "8.5.0",
  "_npmOperationalInternal": {
    "host": "s3://npm-registry-packages",
    "tmp": "tmp/react-scripts-1.0.14.tgz_1506471610836_0.5613740666303784"
  },
  "_npmUser": {
    "name": "timer",
    "email": "timer150@gmail.com"
  },
  "_npmVersion": "5.3.0",
  "_phantomChildren": {
    "asap": "2.0.6",
    "escape-string-regexp": "1.0.5",
    "graceful-fs": "4.1.11",
    "has-ansi": "2.0.0",
    "universalify": "0.1.1"
  },
  "_requested": {
    "raw": "react-scripts@^1.0.7",
    "scope": null,
    "escapedName": "react-scripts",
    "name": "react-scripts",
    "rawSpec": "^1.0.7",
    "spec": ">=1.0.7 <2.0.0",
    "type": "range"
  },
  "_requiredBy": [
    "#DEV:/"
  ],
  "_resolved": "https://registry.npmjs.org/react-scripts/-/react-scripts-1.0.14.tgz",
  "_shasum": "70fe76c9beb67b136b953e875bdfe4ad78d410d1",
  "_shrinkwrap": null,
  "_spec": "react-scripts@^1.0.7",
  "_where": "D:\\Sandeepan\\Payu MVC\\backend codebase\\MVC2.0\\panel\\mvc-panel",
  "bin": {
    "react-scripts": "./bin/react-scripts.js"
  },
  "bugs": {
    "url": "https://github.com/facebookincubator/create-react-app/issues"
  },
  "dependencies": {
    "autoprefixer": "7.1.2",
    "babel-core": "6.25.0",
    "babel-eslint": "7.2.3",
    "babel-jest": "20.0.3",
    "babel-loader": "7.1.1",
    "babel-preset-react-app": "^3.0.3",
    "babel-runtime": "6.26.0",
    "case-sensitive-paths-webpack-plugin": "2.1.1",
    "chalk": "1.1.3",
    "css-loader": "0.28.4",
    "dotenv": "4.0.0",
    "eslint": "4.4.1",
    "eslint-config-react-app": "^2.0.1",
    "eslint-loader": "1.9.0",
    "eslint-plugin-flowtype": "2.35.0",
    "eslint-plugin-import": "2.7.0",
    "eslint-plugin-jsx-a11y": "5.1.1",
    "eslint-plugin-react": "7.1.0",
    "extract-text-webpack-plugin": "3.0.0",
    "file-loader": "0.11.2",
    "fs-extra": "3.0.1",
    "fsevents": "1.1.2",
    "html-webpack-plugin": "2.29.0",
    "jest": "20.0.4",
    "object-assign": "4.1.1",
    "postcss-flexbugs-fixes": "3.2.0",
    "postcss-loader": "2.0.6",
    "promise": "8.0.1",
    "react-dev-utils": "^4.1.0",
    "style-loader": "0.18.2",
    "sw-precache-webpack-plugin": "0.11.4",
    "url-loader": "0.5.9",
    "webpack": "3.5.1",
    "webpack-dev-server": "2.8.2",
    "webpack-manifest-plugin": "1.2.1",
    "whatwg-fetch": "2.0.3"
  },
  "description": "Configuration and scripts for Create React App.",
  "devDependencies": {
    "react": "^15.5.4",
    "react-dom": "^15.5.4"
  },
  "directories": {},
  "dist": {
    "integrity": "sha512-+p0q2N2WW7L4WW6uObqN7fYwSQZ9fBI0StpMYl1Ukoz/lCbemf+yW6b8refyhTsGy62GAqxlpyEfVcTE3hJAxg==",
    "shasum": "70fe76c9beb67b136b953e875bdfe4ad78d410d1",
    "tarball": "https://registry.npmjs.org/react-scripts/-/react-scripts-1.0.14.tgz"
  },
  "engines": {
    "node": ">=6"
  },
  "files": [
    "bin",
    "config",
    "scripts",
    "template",
    "utils"
  ],
  "homepage": "https://github.com/facebookincubator/create-react-app#readme",
  "license": "MIT",
  "maintainers": [
    {
      "name": "timer",
      "email": "timer150@gmail.com"
    },
    {
      "name": "fb",
      "email": "opensource+npm@fb.com"
    },
    {
      "name": "gaearon",
      "email": "dan.abramov@gmail.com"
    }
  ],
  "name": "react-scripts",
  "optionalDependencies": {
    "fsevents": "1.1.2"
  },
  "readme": "ERROR: No README data found!",
  "repository": {
    "type": "git",
    "url": "git+https://github.com/facebookincubator/create-react-app.git"
  },
  "version": "1.0.14"
}

更新

我尝试运行 npm install 命令并获取先前命令的退出状态。尽管有警告，但它显示 0 表示成功。因此， Jenkins 的工作看起来不应该因此而被卡住。但是，我们仍在尝试找到一种方法来消除此警告，因为它与我们的操作系统无关。

Answer 1

fsevents 在 mac 和其他 linux 系统中的处理方式不同。 Linux 系统忽略 fsevents 而 mac 安装它。正如上面的错误消息指出 fsevents 是可选的，它在安装过程中被跳过。

您可以在 linux 系统中运行 npm install --no-optional 命令来避免上述警告。

更多信息

https://github.com/npm/npm/issues/14185

https://github.com/npm/npm/issues/5095