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Q&A Is it necessary for a build server to remove node_modules before an AOT build?

I am currently dealing with an Angular application that is being deployed using an CI orchestrator and Jenkins. Jenkins job is configured to do the following (relevant steps only): fetch source...

2 answers  ·  posted 4y ago by Alexei‭  ·  last activity 4y ago by Derek Elkins‭

#2: Post edited by user avatar hkotsubo‭ · 2020-12-23T21:36:33Z (almost 4 years ago)
Typo and some formatting
Is it necessary for a build server to remove node_modules before an AOT build?
  • I am currently dealing with an Angular application that is being deployed using an CI orchestrator and Jenskins.
  • Jenkins job is configured to do the following (relevant steps only):
  • - fetch sources from Git
  • - remove node_modules
  • - npm install
  • - perform AOT build (--prod + other optimizations)
  • - deploy
  • I have noticed that node_modules removal + npm install + AOT build takes way more time than simply calling npm install + perform AOT build, so I am wondering why the removal.
  • I have asked a few colleagues about this configuration and no one seems to know why the removal is required.
  • From what I know, removing node_modules is very rarely required (maybe some major update messes up some packages or similar) and I haven't removed any node_modules for any project in years (development environment).
  • So, is it necessary for a build server to remove node_modules before an AOT build?
  • I am currently dealing with an Angular application that is being deployed using an CI orchestrator and Jenkins.
  • Jenkins job is configured to do the following (relevant steps only):
  • - fetch sources from Git
  • - remove node_modules
  • - `npm install`
  • - perform AOT build (`--prod` + other optimizations)
  • - deploy
  • I have noticed that node_modules removal + `npm install` + AOT build takes way more time than simply calling `npm install` + perform AOT build, so I am wondering why the removal.
  • I have asked a few colleagues about this configuration and no one seems to know why the removal is required.
  • From what I know, removing node_modules is very rarely required (maybe some major update messes up some packages or similar) and I haven't removed any node_modules for any project in years (development environment).
  • So, is it necessary for a build server to remove node_modules before an AOT build?
#1: Initial revision by user avatar Alexei‭ · 2020-12-23T10:31:25Z (almost 4 years ago)
Is it necessary for a build server to remove node_modules before an AOT build?
I am currently dealing with an Angular application that is being deployed using an CI orchestrator and Jenskins. 

Jenkins job is configured to do the following (relevant steps only):

- fetch sources from Git
- remove node_modules
- npm install
- perform AOT build (--prod + other optimizations)
- deploy

I have noticed that node_modules removal + npm install + AOT build takes way more time than simply calling npm install + perform AOT build, so I am wondering why the removal.

I have asked a few colleagues about this configuration and no one seems to know why the removal is required. 

From what I know, removing node_modules is very rarely required (maybe some major update messes up some packages or similar) and I haven't removed any node_modules for any project in years (development environment).

So, is it necessary for a build server to remove node_modules before an AOT build?