80% of the time I copy a nodejs project(or angular), I have to rm -rf node_modules and npm install again. I am wondering why as cp -r dir/* dir is extremely stable and I did this in java all the time.

I get an error like this on my nodejs project

dean@Deans-MacBook-Pro server % ./node_modules/.bin/concurrently
node:internal/modules/cjs/loader:1222
  throw err;
  ^

Error: Cannot find module '../src/defaults'
Require stack:
- /Users/dean/workspace/biltup/biltup/server/node_modules/.bin/concurrently
    at Module._resolveFilename (node:internal/modules/cjs/loader:1219:15)
    at Module._load (node:internal/modules/cjs/loader:1045:27)
    at TracingChannel.traceSync (node:diagnostics_channel:315:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:215:24)
    at Module.require (node:internal/modules/cjs/loader:1304:12)
    at require (node:internal/modules/helpers:123:16)
    at Object.<anonymous> (/Users/dean/workspace/biltup/biltup/server/node_modules/.bin/concurrently:32:31)
    at Module._compile (node:internal/modules/cjs/loader:1504:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1588:10)
    at Module.load (node:internal/modules/cjs/loader:1282:32) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/Users/dean/workspace/biltup/biltup/server/node_modules/.bin/concurrently'
  ]
}

Node.js v22.5.0

I get an error like this on my angular project

dean@Deans-MacBook-Pro client % npm run dev

> [email protected] dev
> ng serve

node:internal/modules/cjs/loader:1222
  throw err;
  ^

Error: Cannot find module './bootstrap'
Require stack:
- /Users/dean/workspace/biltup/biltup/client/node_modules/.bin/ng
    at Module._resolveFilename (node:internal/modules/cjs/loader:1219:15)
    at Module._load (node:internal/modules/cjs/loader:1045:27)
    at TracingChannel.traceSync (node:diagnostics_channel:315:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:215:24)
    at Module.require (node:internal/modules/cjs/loader:1304:12)
    at require (node:internal/modules/helpers:123:16)
    at Object.<anonymous> (/Users/dean/workspace/biltup/biltup/client/node_modules/.bin/ng:70:3)
    at Module._compile (node:internal/modules/cjs/loader:1467:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1551:10)
    at Module.load (node:internal/modules/cjs/loader:1282:32) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [ '/Users/dean/workspace/biltup/biltup/client/node_modules/.bin/ng' ]
}

Node.js v22.4.0

I tried doing cp -r dir/* dir