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ERROR in ./node_modules/electron/index.js Module not found: Error: Can't resolve 'fs'

See original GitHub issue

It shows an error when I try to run npm test. Any ideas?

ERROR in ./node_modules/electron/index.js
Module not found: Error: Can't resolve 'fs' in '/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/electron'
resolve 'fs' in '/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/electron'
  Parsed request is a module
  using description file: /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/electron/package.json (relative path: .)
    Field 'browser' doesn't contain a valid alias configuration
    resolve as module
      looking for modules in /Users/dnguyen/Documents/projects/random/angular-electron
        using description file: /Users/dnguyen/Documents/projects/random/angular-electron/package.json (relative path: .)
          Field 'browser' doesn't contain a valid alias configuration
          using description file: /Users/dnguyen/Documents/projects/random/angular-electron/package.json (relative path: ./fs)
            no extension
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/fs doesn't exist
            .ts
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/fs.ts doesn't exist
            .tsx
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/fs.tsx doesn't exist
            .mjs
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/fs.mjs doesn't exist
            .js
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/fs.js doesn't exist
            as directory
              /Users/dnguyen/Documents/projects/random/angular-electron/fs doesn't exist
      /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/electron/node_modules doesn't exist or is not a directory
      /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/node_modules doesn't exist or is not a directory
      /Users/dnguyen/Documents/projects/random/node_modules doesn't exist or is not a directory
      /Users/dnguyen/Documents/projects/node_modules doesn't exist or is not a directory
      /Users/dnguyen/Documents/node_modules doesn't exist or is not a directory
      /Users/dnguyen/node_modules doesn't exist or is not a directory
      /Users/node_modules doesn't exist or is not a directory
      /node_modules doesn't exist or is not a directory
      looking for modules in /Users/dnguyen/Documents/projects/random/angular-electron/node_modules
        using description file: /Users/dnguyen/Documents/projects/random/angular-electron/package.json (relative path: ./node_modules)
          Field 'browser' doesn't contain a valid alias configuration
          using description file: /Users/dnguyen/Documents/projects/random/angular-electron/package.json (relative path: ./node_modules/fs)
            no extension
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs doesn't exist
            .ts
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.ts doesn't exist
            .tsx
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.tsx doesn't exist
            .mjs
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.mjs doesn't exist
            .js
              Field 'browser' doesn't contain a valid alias configuration
              /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.js doesn't exist as directory
              /Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs doesn't exist
[/Users/dnguyen/Documents/projects/random/angular-electron/fs]
[/Users/dnguyen/Documents/projects/random/angular-electron/fs.ts]
[/Users/dnguyen/Documents/projects/random/angular-electron/fs.tsx]
[/Users/dnguyen/Documents/projects/random/angular-electron/fs.mjs]
[/Users/dnguyen/Documents/projects/random/angular-electron/fs.js]
[/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/electron/node_modules]
[/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/node_modules]
[/Users/dnguyen/Documents/projects/random/node_modules]
[/Users/dnguyen/Documents/projects/node_modules]
[/Users/dnguyen/Documents/node_modules]
[/Users/dnguyen/node_modules]
[/Users/node_modules]
[/node_modules]
[/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs]
[/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.ts]
[/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.tsx]
[/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.mjs]
[/Users/dnguyen/Documents/projects/random/angular-electron/node_modules/fs.js]
 @ ./node_modules/electron/index.js 1:9-22
 @ ./src/app/providers/database.service.ts
 @ ./src/app/app.component.ts
 @ ./src/app/app.component.spec.ts
 @ ./src sync \.spec\.ts$
 @ ./src/test.ts