How to solve npm install throwing fsevents warning on non-MAC OS?
Following warning is being thrown on npm install command -
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (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"}
)
The warning is apparently causing our Jenkins Job to mark failed, so we are just trying to get rid of the same.
I already checked this https://stackoverflow.com/a/42938398/351903 But, unlike what is mentioned there, I do not have any /node_modules/fserrors in my setup. Also, my package.json does not contain fserrors. Following is my 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"
}
}
I can see fsevents in the package.json of react-scripts (which is defined under devDependencies of my package.json) in node_modules\react-scripts\package.json -
{
"_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": "[email protected]",
"_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": "[email protected]"
},
"_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": "[email protected]"
},
{
"name": "fb",
"email": "[email protected]"
},
{
"name": "gaearon",
"email": "[email protected]"
}
],
"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"
}
Update
I tried running the npm install command and getting the exit status of the earlier command. It showed 0 meaning success, despite the warnings. So, it does not look like Jenkins job should be stuck due to this. However, we are still trying to find a way to get rid of this warning because it is not relevant to our OS.
Answer
fsevents is dealt differently in mac and other linux system. Linux system ignores fsevents whereas mac install it. As the above error message states that fsevents is optional and it is skipped in installation process.
You can run npm install --no-optional command in linux system to avoid above warning.
Further information