react之安装webpack报错

node-pre-gyp WARN Using needle for node-pre-gyp https download 
node-pre-gyp WARN Pre-built binaries not installable for [email protected] and [email protected] (node-v72 ABI, unknown) (falling back to source compile with node-gyp) 
node-pre-gyp WARN Hit error EACCES: permission denied, mkdir '/usr/local/lib/node_modules/webpack/node_modules/fsevents/lib' 
gyp ERR! configure error 
gyp ERR! stack Error: EACCES: permission denied, mkdir '/usr/local/lib/node_modules/webpack/node_modules/fsevents/build'
gyp ERR! System Darwin 18.6.0
gyp ERR! command "/usr/local/Cellar/node/12.4.0/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "configure" "--fallback-to-build" "--module=/usr/local/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v72-darwin-x64/fse.node" "--module_name=fse" "--module_path=/usr/local/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v72-darwin-x64" "--napi_version=4" "--node_abi_napi=napi" "--napi_build_version=0" "--node_napi_label=node-v72"
gyp ERR! cwd /usr/local/lib/node_modules/webpack/node_modules/fsevents
gyp ERR! node -v v12.4.0
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/Cellar/node/12.4.0/bin/node /usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js configure --fallback-to-build --module=/usr/local/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v72-darwin-x64/fse.node --module_name=fse --module_path=/usr/local/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v72-darwin-x64 --napi_version=4 --node_abi_napi=napi --napi_build_version=0 --node_napi_label=node-v72' (1)
node-pre-gyp ERR! stack     at ChildProcess. (/usr/local/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:200:13)
node-pre-gyp ERR! stack     at maybeClose (internal/child_process.js:1021:16)
node-pre-gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:283:5)
node-pre-gyp ERR! System Darwin 18.6.0
node-pre-gyp ERR! command "/usr/local/Cellar/node/12.4.0/bin/node" "/usr/local/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/lib/node_modules/webpack/node_modules/fsevents
node-pre-gyp ERR! node -v v12.4.0
node-pre-gyp ERR! node-pre-gyp -v v0.12.0
node-pre-gyp ERR! not ok 
Failed to execute '/usr/local/Cellar/node/12.4.0/bin/node /usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js configure --fallback-to-build --module=/usr/local/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v72-darwin-x64/fse.node --module_name=fse --module_path=/usr/local/lib/node_modules/webpack/node_modules/fsevents/lib/binding/Release/node-v72-darwin-x64 --napi_version=4 --node_abi_napi=napi --napi_build_version=0 --node_napi_label=node-v72' (1)
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/webpack/node_modules/fsevents):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] install: `node install`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1

解决办法

终端安装使用如下命令：

sudo npm install --unsafe-perm=true --allow-root --save-dev grunt