Sudo npm install webpack -g

The nodes are installed on the MAC and webpack is installed through the npm. The error message is as follows.

MacBook-Pro:~ admin$ node -v v10.15.3 MacBook-Pro:~ admin$ npm -v 6.4.1 MacBook-Pro:~ admin$ sudo npm install webpack -g Password: /usr/local/npm_modules/bin/webpack -> /usr/local/npm_modules/lib/node_modules/webpack/bin/webpack.js

fsevents@1.2.9 install /usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents node install

node-pre-gyp WARN Using needle for node-pre-gyp https download node-pre-gyp WARN Pre-built binaries not installable for fsevents@1.2.9 and node@10.15.3 (node-v64 ABI, unknown) (falling back to source compile with node-gyp) node-pre-gyp WARN Hit error EACCES: permission denied, mkdir '/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/lib' gyp WARN EACCES user "root" does not have permission to access the dev dir "/Users/admin/.node-gyp/10.15.3" gyp WARN EACCES attempting to reinstall using temporary dev dir "/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/.node-gyp" gyp WARN install got an error, rolling back install gyp WARN install got an error, rolling back install gyp ERR! configure error gyp ERR! stack Error: EACCES: permission denied, mkdir '/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/.node-gyp' gyp ERR! System Darwin 18.5.0 gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "configure" "--fallback-to-build" "--module=/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v64-darwin-x64/fse.node" "--module_name=fse" "--module_path=/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v64-darwin-x64" "--napi_version=3" "--node_abi_napi=napi" "--napi_build_version=0" "--node_napi_label=node-v64" gyp ERR! cwd /usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents gyp ERR! node -v v10.15.3 gyp ERR! node-gyp -v v3.8.0 gyp ERR! not ok node-pre-gyp ERR! build error node-pre-gyp ERR! stack Error: Failed to execute '/usr/local/bin/node /usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js configure --fallback-to-build --module=/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v64-darwin-x64/fse.node --module_name=fse --module_path=/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v64-darwin-x64 --napi_version=3 --node_abi_napi=napi --napi_build_version=0 --node_napi_label=node-v64' (1) node-pre-gyp ERR! stack at ChildProcess. (/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/node_modules/node-pre-gyp/lib/util/compile.js:83:29) node-pre-gyp ERR! stack at ChildProcess.emit (events.js:189:13) node-pre-gyp ERR! stack at maybeClose (internal/child_process.js:970:16) node-pre-gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5) node-pre-gyp ERR! System Darwin 18.5.0 node-pre-gyp ERR! command "/usr/local/bin/node" "/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/node_modules/node-pre-gyp/bin/node-pre-gyp" "install" "--fallback-to-build" node-pre-gyp ERR! cwd /usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents node-pre-gyp ERR! node -v v10.15.3 node-pre-gyp ERR! node-pre-gyp -v v0.12.0 node-pre-gyp ERR! not ok Failed to execute '/usr/local/bin/node /usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js configure --fallback-to-build --module=/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v64-darwin-x64/fse.node --module_name=fse --module_path=/usr/local/npm_modules/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v64-darwin-x64 --napi_version=3 --node_abi_napi=napi --napi_build_version=0 --node_napi_label=node-v64' (1) npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules/webpack/node_modules/fsevents): npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 install: node install npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1

• webpack@4.31.0 updated 1 package in 8.525s MacBook-Pro:~ admin$ webpack -v -bash: webpack: command not found MacBook-Pro:~ admin$

MacBook-Pro:~ admin$ node -v v10.15.3 MacBook-Pro:~ admin$ npm -v 6.4.1 MacBook-Pro:~ admin$ sudo npm install webpack -g