Angular Production Build is taking about 1.5 GB of memory and still runs Out Of Memory

Question

Angular2 cli Project Production Build [ng build -prod] getting struck on 92% and getting error message like, running out of heap memory. Is there any solution for it? Project consists of huge number of components. Normal build is working fine [ng build]

Screenshot

Thank you

Answer 1

There is only one workaround today.

Open ./node_modules/.bin/ng.cmd and add --max_old_space_size option

@IF EXIST "%~dp0\node.exe" (
  "%~dp0\node.exe" --max_old_space_size=8192 "%~dp0\..\@angular\cli\bin\ng" %*
) ELSE (
  @SETLOCAL
  @SET PATHEXT=%PATHEXT:;.JS;=;%
  node  --max_old_space_size=8192  "%~dp0\..\@angular\cli\bin\ng" %*
)

Or you can upgrade your computer:)

Related issue on github

• https://github.com/angular/angular-cli/issues/5618

Answer 2

Please check the version of Angular CLI, If its 1.2.6 downgrade it to 1.2.1. It will work. I too have the same issue and solved by this mean. NB: it's only a temporary fix. Hope cli team will solve the issue ASAP.

Answer 3

If you are working with a Node Version >= 8, you can use the solution posted in Node.js heap out of memory:

In your package.json file, replace ng build xxx with node --max_old_space_size=8192 ./node_modules/@angular/cli/bin/ng build xxx

The value 8192 is the space in MB which node and angular as well will be allowed to use