Fixed #32165 -- Added pre-commit hooks

* Added pre-commit hooks for isort, flake8 and eslint
* Added documentation on how to install and use the tool

1 files changed, 26 insertions, 0 deletions

diff --git a/docs/internals/contributing/writing-code/coding-style.txt b/docs/internals/contributing/writing-code/coding-style.txt
index 0c91f20268..739ff0f4b9 100644
--- a/docs/internals/contributing/writing-code/coding-style.txt
+++ b/docs/internals/contributing/writing-code/coding-style.txt
@@ -4,6 +4,32 @@ Coding style
 
 Please follow these coding standards when writing code for inclusion in Django.
 
+.. _coding-style-pre-commit:
+
+Pre-commit checks
+=================
+
+`pre-commit <https://pre-commit.com>`_ is a framework for managing pre-commit
+hooks. These hooks help to identify simple issues before committing code for
+review. By checking for these issues before code review it allows the reviewer
+to focus on the change itself, and it can also help to reduce the number CI
+runs.
+
+To use the tool, first install ``pre-commit`` and then the git hooks::
+
+.. console::
+
+    $ pip install pre-commit
+    $ pre-commit install
+
+On the first commit ``pre-commit`` will install the hooks, these are
+installed in their own environments and will take a short while to
+install on the first run. Subsequent checks will be significantly faster.
+If the an error is found an appropriate error message will be displayed.
+If the error was with ``isort`` then the tool will go ahead and fix them for
+you. Review the changes and re-stage for commit if you are happy with
+them.
+
 .. _coding-style-python:
 
 Python style