Problem Install npm ; "npm install"

[JayRajM97]

npm install

npm WARN @angular/platform-server@4.0.3 requires a peer of @angular/animations@4.0.3 but none was installed.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: js-yaml@3.7.0 (node_modules\js-yaml):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\js-yaml-d016ede9\dist\js-yaml.js'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: postcss@6.0.10 (node_modules\postcss-modules-values\node_modules\postcss):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\postcss-c3910137\lib\node.js'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: micromatch@2.3.11 (node_modules\http-proxy-middleware\node_modules\micromatch):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\micromatch-23301a2f\README.md'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: sockjs-client@1.1.2 (node_modules\sockjs-client):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\sockjs-client-8b9e513b\dist\sockjs.min.js'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: postcss@6.0.10 (node_modules\postcss-modules-extract-imports\node_modules\postcss):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\postcss-1aaab318\docs\source-maps.md'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: postcss@6.0.10 (node_modules\postcss-modules-local-by-default\node_modules\postcss):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\postcss-cdf17e6b\lib\parser.js'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: postcss@5.2.17 (node_modules\postcss):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\postcss-4b5b3078\lib\node.js'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: tsickle@0.21.6 (node_modules\tsickle):
npm WARN enoent SKIPPING OPTIONAL DEPENDENCY: ENOENT: no such file or directory, utime 'C:\Windows\System32\angular2-seed\node_modules.staging\tsickle-5ed8dcfb\build\src\tsickle.js'

npm ERR! code EINTEGRITY
npm ERR! sha1-FwsY1a9O4Cskiqah8eBYSshBaB4= integrity checksum failed when using sha1: wanted sha1-FwsY1a9O4Cskiqah8eBYSshBaB4= but got sha1-1WN9sU/Q2yzUNzGGcsfjOnqnn2c=. (31354 bytes)

[mveer-agarwal]

I am facing the same issue with npm install on package.json file. Getting the below error,

=== npm audit security report ===

                             Manual Review
         Some vulnerabilities require your attention to resolve

      Visit https://go.npm.me/audit-guide for additional guidance

High Missing Origin Validation

Package webpack-dev-server

Patched in >=3.1.11

Dependency of webpack-dev-server [dev]

Path webpack-dev-server

More info https://nodesecurity.io/advisories/725

found 1 high severity vulnerability in 9192 scanned packages
1 vulnerability requires manual review. See the full report for details.

Please do needful.