Issue using firebase-admin - dependencies were not found - firebase

Question

I am developing an application by nuxtjs. I have installed the Admin SDK for Node.js to validate the user's token in the server side but when I import firebase-admin in the project I have the next issue. I have installed the modules child_process fs net tls but it didn' work.
WARNING Compiled with 4 warnings
20:30:20 warning in ./node_modules/grpc/src/grpc_extension.js
Critical dependency: the request of a dependency is an expression
warning in
./node_modules/grpc/node_modules/node-pre-gyp/lib/pre-binding.js
Critical dependency: the request of a dependency is an expression
warning in
./node_modules/grpc/node_modules/node-pre-gyp/lib/util/versioning.js
Critical dependency: the request of a dependency is an expression
warning in ./node_modules/hash-stream-validation/index.js
Module not found: Error: Can't resolve 'fast-crc32c' in
'C:\Users\ARSENIO\Desktop\Development\nuxt\project4\node_modules\hash-stream-
validation'
ERROR Failed to compile with 38 errors
20:30:20 These dependencies were not found:
child_process in ./node_modules/google-auth-library/build/src/auth/googleauth.js,
./node_modules/grpc/node_modules/detect-libc/lib/detect-libc.js
fs in ./node_modules/#google-cloud/storage/src/file.js, ./node_modules/#google-cloud/storage/src/bucket.js and 34 others
To install them, you can run: npm install --save child_process fs
The package.json file is:
{
"name": "project4",
"version": "1.0.0",
"description": "My gnarly Nuxt.js project",
"author": "Arsenio Aguirre",
"private": true,
"scripts": {
"dev": "nuxt",
"build": "nuxt build",
"start": "nuxt start",
"generate": "nuxt generate",
"lint": "eslint --ext .js,.vue --ignore-path .gitignore .",
"precommit": "npm run lint"
},
"dependencies": {
"bootstrap": "^4.1.3",
"bootstrap-vue": "^2.0.0-beta",
"chart.js": "^2.7.2",
"child_process": "^1.0.2",
"cross-env": "^5.2.0",
"firebase": "^5.5.3",
"firebase-admin": "^6.0.0",
"flag-icon-css": "^2.9.0",
"font-awesome": "^4.7.0",
"fs": "0.0.1-security",
"js-cookie": "^2.2.0",
"net": "^1.0.2",
"node-sass": "^4.9.3",
"nuxt": "^2.0.0",
"sass-loader": "^6.0.7",
"simple-line-icons": "^2.4.1",
"tls": "0.0.1",
"vue-chartjs": "^3.4.0"
},
"devDependencies": {
"nodemon": "^1.11.0",
"babel-eslint": "^8.2.1",
"eslint": "^5.0.1",
"eslint-loader": "^2.0.0",
"eslint-plugin-vue": "^4.0.0",
"eslint-config-prettier": "^3.1.0",
"eslint-plugin-prettier": "2.6.2",
"prettier": "1.14.3"
}
}