How to get module caches which the module is depending on and remove them

manage_module_cache.js

function extractDependingModuleCaches(name) {
  function inner(name, targets) {
    targets[name] = true
    Object.keys(require.cache[name].children).forEach(function(key) {
      var child = require.cache[name].children[key]
      inner(child.filename, targets)
    })
    return targets
  }
  return targets = Object.keys(inner(name, {}))
}

function removeDependingModuleCaches(name, filter) {
  var targets = extractDependingModuleCaches(name)
  targets.forEach(function(name) {
    if (typeof filter !== 'function' || filter(name)) {
      delete require.cache[name]
    }
  })
}


module.exports = {
  extractDependingModuleCaches,
  removeDependingModuleCaches,
}

usage.md

// a.js
console.log('entered A')

module.exports = `A(id: ${Math.floor(Math.random()*100)})

// b.js
var a = require('./a')
console.log('entered B')
module.exports = `${a}\nB(id: ${Math.floor(Math.random()*100)})`

// c.js
var b = require('./b')
console.log('entered C')
module.exports = `${b}\nC(id: ${Math.floor(Math.random()*100)})`

c.js -> b.js -> a.js

var u = require('./manage_module_cache')


var old_c = require('./c')

console.log('[old_c]')
console.log(old_c)

console.log('\nremoving\n')
u.removeDependingModuleCaches(require.resolve('./c'))


console.log('[old_c]')
console.log(old_c)
var new_c = require('./c')
console.log('[new_c]')
console.log(new_c)

outputs

entered A
entered B
entered C
[old_c]
A(id: 88)
B(id: 64)
C(id: 27)



removing



[old_c]
A(id: 88)
B(id: 64)
C(id: 27)
entered A
entered B
entered C
[new_c]
A(id: 63)
B(id: 71)
C(id: 88)