Add prettier to the pre-commit configuration

Also apply prettier

12 files changed, 132 insertions, 111 deletions

diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index e3a9ff424..e3c97eb96 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1 +1,2 @@
-Please read the [contribute doc](https://github.com/PyCQA/pylint/blob/master/doc/development_guide/contribute.rst).
+Please read the
+[contribute doc](https://github.com/PyCQA/pylint/blob/master/doc/development_guide/contribute.rst).
diff --git a/.github/ISSUE_TEMPLATE/1_Bug_report.md b/.github/ISSUE_TEMPLATE/1_Bug_report.md
index b4c2e1ddc..88a20e0c0 100644
--- a/.github/ISSUE_TEMPLATE/1_Bug_report.md
+++ b/.github/ISSUE_TEMPLATE/1_Bug_report.md
@@ -1,7 +1,6 @@
 ---
 name: Bug report
 about: Report a bug in pylint
-
 ---
 
 <!--
@@ -36,6 +35,7 @@ module\
 -->
 
 ### Current behavior
+
 <!--
 Result of `pylint a.py`:
 ```
@@ -45,10 +45,10 @@ Result of `pylint a.py`:
 
 ### Expected behavior
 
-
 ### pylint --version output
 
 Result of `pylint --version` output:
+
 ```
 
 ```
diff --git a/.github/ISSUE_TEMPLATE/2_Feature_request.md b/.github/ISSUE_TEMPLATE/2_Feature_request.md
index b9dca130d..1a0a39859 100644
--- a/.github/ISSUE_TEMPLATE/2_Feature_request.md
+++ b/.github/ISSUE_TEMPLATE/2_Feature_request.md
@@ -1,7 +1,6 @@
 ---
 name: Feature request
 about: Suggest an idea for this project
-
 ---
 
 <!--
@@ -12,10 +11,13 @@ about: Suggest an idea for this project
 -->
 
 ### Is your feature request related to a problem? Please describe
+
 A clear and concise description of what the problem is.
 
 ### Describe the solution you'd like
+
 A clear and concise description of what you want to happen.
 
 ### Additional context
+
 Add any other context about the feature request here.
diff --git a/.github/ISSUE_TEMPLATE/3_Question.md b/.github/ISSUE_TEMPLATE/3_Question.md
index 5787c384b..7e9187d85 100644
--- a/.github/ISSUE_TEMPLATE/3_Question.md
+++ b/.github/ISSUE_TEMPLATE/3_Question.md
@@ -1,7 +1,8 @@
 ---
 name: Support question
-about: Questions about pylint that are not covered in the documentation (https://pylint.pycqa.org/en/latest/)
-
+about:
+  Questions about pylint that are not covered in the documentation
+  (https://pylint.pycqa.org/en/latest/)
 ---
 
 ## Question
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index d0eb306c7..05a2447d4 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -12,20 +12,22 @@ https://github.com/PyCQA/pylint/blob/master/doc/development_guide/contribute.rst
 
 - [ ] Add yourself to CONTRIBUTORS if you are a new contributor.
 - [ ] Add a ChangeLog entry describing what your PR does.
-- [ ] If it's a new feature or an important bug fix, add a What's New entry in `doc/whatsnew/<current release.rst>`.
+- [ ] If it's a new feature or an important bug fix, add a What's New entry in
+      `doc/whatsnew/<current release.rst>`.
 - [ ] Write a good description on what the PR does.
 
 ## Description
 
-
 ## Type of Changes
+
 <!-- Leave the corresponding lines for the applicable type of change: -->
-|   | Type |
-| ------------- | ------------- |
-| ✓  | :bug: Bug fix  |
-| ✓  | :sparkles: New feature |
-| ✓  | :hammer: Refactoring  |
-| ✓  | :scroll: Docs |
+
+|     | Type                   |
+| --- | ---------------------- |
+| ✓   | :bug: Bug fix          |
+| ✓   | :sparkles: New feature |
+| ✓   | :hammer: Refactoring   |
+| ✓   | :scroll: Docs          |
 
 ## Related Issue
 
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 082c3d094..fd4ec0c5f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -12,7 +12,6 @@ env:
   DEFAULT_PYTHON: 3.6
   PRE_COMMIT_CACHE: ~/.cache/pre-commit
 
-
 jobs:
   prepare-base:
     name: Prepare base dependencies
@@ -88,7 +87,8 @@ jobs:
         uses: actions/cache@v2.1.4
         with:
           path: venv
-          key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.prepare-base.outputs.python-key }}
       - name: Fail job if Python cache restore failed
         if: steps.cache-venv.outputs.cache-hit != 'true'
@@ -129,7 +129,8 @@ jobs:
         uses: actions/cache@v2.1.4
         with:
           path: venv
-          key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.prepare-base.outputs.python-key }}
       - name: Fail job if Python cache restore failed
         if: steps.cache-venv.outputs.cache-hit != 'true'
@@ -202,7 +203,8 @@ jobs:
         uses: actions/cache@v2.1.4
         with:
           path: venv
-          key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.prepare-tests-linux.outputs.python-key }}
       - name: Fail job if Python cache restore failed
         if: steps.cache-venv.outputs.cache-hit != 'true'
@@ -241,7 +243,8 @@ jobs:
         uses: actions/cache@v2.1.4
         with:
           path: venv
-          key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.prepare-tests-linux.outputs.python-key }}
       - name: Fail job if Python cache restore failed
         if: steps.cache-venv.outputs.cache-hit != 'true'
@@ -283,7 +286,8 @@ jobs:
         uses: actions/cache@v2.1.4
         with:
           path: venv
-          key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.prepare-tests-linux.outputs.python-key }}
       - name: Fail job if Python cache restore failed
         if: steps.cache-venv.outputs.cache-hit != 'true'
@@ -307,11 +311,11 @@ jobs:
       - name: Upload benchmark artifact
         uses: actions/upload-artifact@v2.2.2
         with:
-          name: benchmark-${{ runner.os }}-${{ matrix.python-version }}_${{
+          name:
+            benchmark-${{ runner.os }}-${{ matrix.python-version }}_${{
             steps.artifact-name-suffix.outputs.datetime }}
           path: .benchmarks/
 
-
   prepare-tests-windows:
     name: Prepare tests for Python ${{ matrix.python-version }} (Windows)
     runs-on: windows-latest
@@ -377,7 +381,8 @@ jobs:
         uses: actions/cache@v2.1.4
         with:
           path: venv
-          key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.prepare-tests-windows.outputs.python-key }}
       - name: Fail job if Python cache restore failed
         if: steps.cache-venv.outputs.cache-hit != 'true'
@@ -389,7 +394,6 @@ jobs:
           . venv\\Scripts\\activate
           pytest --benchmark-disable tests/
 
-
   prepare-tests-pypy:
     name: Prepare tests for Python ${{ matrix.python-version }}
     runs-on: ubuntu-latest
@@ -451,7 +455,8 @@ jobs:
         uses: actions/cache@v2.1.4
         with:
           path: venv
-          key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.prepare-tests-pypy.outputs.python-key }}
       - name: Fail job if Python cache restore failed
         if: steps.cache-venv.outputs.cache-hit != 'true'
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0c5bef03f..99cbcd198 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,71 +1,77 @@
 repos:
--   repo: https://github.com/pre-commit/pre-commit-hooks
+  - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v3.4.0
     hooks:
-    -   id: trailing-whitespace
+      - id: trailing-whitespace
         exclude: "tests/functional/t/trailing_whitespaces.py"
-    -   id: end-of-file-fixer
+      - id: end-of-file-fixer
         exclude: "tests/functional/m/missing/missing_final_newline.py|tests/functional/t/trailing_newlines.py"
--   repo: https://github.com/asottile/setup-cfg-fmt
+  - repo: https://github.com/asottile/setup-cfg-fmt
     rev: v1.17.0
     hooks:
-    -   id: setup-cfg-fmt
--   repo: https://github.com/myint/autoflake
+      - id: setup-cfg-fmt
+  - repo: https://github.com/myint/autoflake
     rev: v1.4
     hooks:
-    -   id: autoflake
+      - id: autoflake
         exclude: &fixtures tests/functional/|tests/input|tests/extensions/data|tests/regrtest_data/|tests/data/
         args:
-            - --in-place
-            - --remove-all-unused-imports
-            - --expand-star-imports
-            - --remove-duplicate-keys
-            - --remove-unused-variables
--   repo: https://github.com/asottile/pyupgrade
+          - --in-place
+          - --remove-all-unused-imports
+          - --expand-star-imports
+          - --remove-duplicate-keys
+          - --remove-unused-variables
+  - repo: https://github.com/asottile/pyupgrade
     rev: v2.11.0
     hooks:
-    -   id: pyupgrade
+      - id: pyupgrade
         args: [--py36-plus]
         exclude: *fixtures
--   repo: https://github.com/PyCQA/isort
+  - repo: https://github.com/PyCQA/isort
     rev: 5.8.0
     hooks:
-    -   id: isort
--   repo: https://github.com/ambv/black
+      - id: isort
+  - repo: https://github.com/ambv/black
     rev: 20.8b1
     hooks:
-    - id: black
-      args: [--safe, --quiet]
-      exclude: *fixtures
--   repo: https://github.com/Pierre-Sassoulas/black-disable-checker/
+      - id: black
+        args: [--safe, --quiet]
+        exclude: *fixtures
+  - repo: https://github.com/Pierre-Sassoulas/black-disable-checker/
     rev: 1.0.0
     hooks:
-    - id: black-disable-checker
--   repo: https://gitlab.com/pycqa/flake8
+      - id: black-disable-checker
+  - repo: https://gitlab.com/pycqa/flake8
     rev: 3.9.0
     hooks:
-    -   id: flake8
+      - id: flake8
         exclude: *fixtures
--   repo: local
+  - repo: local
     hooks:
-    -   id: pylint
+      - id: pylint
         name: pylint
         entry: pylint
         language: system
         types: [python]
-        args: ["-rn", "-sn", "--rcfile=pylintrc", "--load-plugins=pylint.extensions.docparams"]
+        args:
+          [
+            "-rn",
+            "-sn",
+            "--rcfile=pylintrc",
+            "--load-plugins=pylint.extensions.docparams",
+          ]
         # disabled plugins: pylint.extensions.mccabe
         exclude: tests/functional/|tests/input|tests/extensions/data|tests/regrtest_data/|tests/data/|doc/
-    -   id: fix-documentation
+      - id: fix-documentation
         name: Fix documentation
         entry: python3 -m script.fix_documentation
         language: system
         types: [text]
         files: ^(ChangeLog|doc/whatsnew/\d+\.\d+\.rst)
--   repo: https://github.com/pre-commit/mirrors-mypy
+  - repo: https://github.com/pre-commit/mirrors-mypy
     rev: v0.812
     hooks:
-    -   id: mypy
+      - id: mypy
         name: mypy
         entry: mypy
         language: python
@@ -74,3 +80,8 @@ repos:
         require_serial: true
         additional_dependencies: []
         exclude: tests/functional/|tests/input|tests/extensions/data|tests/regrtest_data/|tests/data/|doc/|bin/
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v2.2.1
+    hooks:
+      - id: prettier
+        args: [--prose-wrap=always, --print-width=88]
diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index 66d447127..1bec0790e 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -1,6 +1,6 @@
--   id: pylint
-    name: pylint
-    entry: pylint
-    language: python
-    types: [python]
-    require_serial: true
+- id: pylint
+  name: pylint
+  entry: pylint
+  language: python
+  types: [python]
+  require_serial: true
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 28611d43d..f3e25df5f 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -3,9 +3,9 @@
 version: 2
 
 sphinx:
-   configuration: doc/conf.py
+  configuration: doc/conf.py
 
 python:
-   version: 3.7
-   install:
-   - requirements: doc/requirements.txt
+  version: 3.7
+  install:
+    - requirements: doc/requirements.txt
diff --git a/.travis.yml b/.travis.yml
index 44bb57d78..fe596f331 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,26 +1,26 @@
 language: python
 stages:
-- tests-cpython
+  - tests-cpython
 jobs:
   include:
-  - stage: tests-cpython
-    python: 3.6
-    env: TOXENV=py36
+    - stage: tests-cpython
+      python: 3.6
+      env: TOXENV=py36
 before_install:
-- python --version
-- uname -a
-- lsb_release -a
+  - python --version
+  - uname -a
+  - lsb_release -a
 install:
-- pip install -U setuptools
-- pip install tox
-- virtualenv --version
-- pip --version
-- tox --version
+  - pip install -U setuptools
+  - pip install tox
+  - virtualenv --version
+  - pip --version
+  - tox --version
 script:
-- pip install .
+  - pip install .
 after_failure:
-- more .tox/log/* | cat
-- more .tox/*/log/* | cat
+  - more .tox/log/* | cat
+  - more .tox/*/log/* | cat
 notifications:
   email:
     on_success: always
diff --git a/appveyor.yml b/appveyor.yml
index 304030697..ad1d9a1f7 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: '{branch}-{build}'
+version: "{branch}-{build}"
 build: off
 
 test_script:
diff --git a/doc/release.md b/doc/release.md
index ed4346713..994a4f2b0 100644
--- a/doc/release.md
+++ b/doc/release.md
@@ -1,17 +1,16 @@
 # Releasing a pylint version
 
-So, you want to release the ``X.Y.Z`` version of pylint ?
+So, you want to release the `X.Y.Z` version of pylint ?
 
 ## Process
 
-1. Preparation
-   0. Run the acceptance tests to see if everything is alright with this release.
-      We don't run them on CI: ``pytest -m acceptance``
+1. Preparation 0. Run the acceptance tests to see if everything is alright with this
+   release. We don't run them on CI: `pytest -m acceptance`
    1. Check if the dependencies of the package are correct
-   2. Update ``__version__`` in ``pylint/__pkginfo__.py``, ``dev_version`` should be ``None`` when you tag,
-      except if it's an alpha release.
+   2. Update `__version__` in `pylint/__pkginfo__.py`, `dev_version` should be `None`
+      when you tag, except if it's an alpha release.
    3. Put the version numbers, and the release date into the changelog
-   4. Put the release date into the ``What's new`` section.
+   4. Put the release date into the `What's new` section.
    5. Generate the new copyright notices for this release:
 
 ```bash
@@ -22,16 +21,16 @@ git --aliases=.copyrite_aliases . --jobs=8
 # automatically
 ```
 
-   6. Submit your changes in a merge request.
+6. Submit your changes in a merge request.
 
-2. Make sure the tests are passing on Travis/GithubActions:
+7. Make sure the tests are passing on Travis/GithubActions:
    https://travis-ci.org/PyCQA/pylint/
 
-3. Do the actual release by tagging the master with ``pylint-X.Y.Z`` (ie  ``pylint-1.6.12``
-   for example). Travis should deal with the release process once the tag is pushed
-   with `git push origin --tags`
+8. Do the actual release by tagging the master with `pylint-X.Y.Z` (ie `pylint-1.6.12`
+   for example). Travis should deal with the release process once the tag is pushed with
+   `git push origin --tags`
 
-4. Go to github, click on "Releases" then on the ``pylint-X.Y.Z`` tag, choose edit tag,
+9. Go to github, click on "Releases" then on the `pylint-X.Y.Z` tag, choose edit tag,
    and copy past the changelog in the description.
 
 ## Manual Release
@@ -49,16 +48,16 @@ twine upload dist/*
 
 ### New branch to create for major releases
 
-The master branch will have all the new features for the ``X.Y+1`` version
+The master branch will have all the new features for the `X.Y+1` version
 
-If you're doing a major release, you need to create the ``X.Y`` branch
-where we will cherry-pick bugs to release the ``X.Y.Z+1`` minor versions
+If you're doing a major release, you need to create the `X.Y` branch where we will
+cherry-pick bugs to release the `X.Y.Z+1` minor versions
 
 ### Merge tags in master for minor releases
 
-Merge the tag ``X.Y.Z`` in the main branch by doing a history only merge. It's done
-in order to signal that this is an official release tag, and for ``pre-commit autoupdate``
-to works.
+Merge the tag `X.Y.Z` in the main branch by doing a history only merge. It's done in
+order to signal that this is an official release tag, and for `pre-commit autoupdate` to
+works.
 
 ```bash
 git checkout master
@@ -68,26 +67,26 @@ git push
 
 ### Milestone handling
 
-We move issue that were not done in the next milestone and block release only
-if it's an issue labelled as blocker.
+We move issue that were not done in the next milestone and block release only if it's an
+issue labelled as blocker.
 
 ### Files to update after releases
 
 #### Changelog
 
-* Create a new section, with the name of the release ``X.Y.Z+1`` on the ``X.Y`` branch.
-* If it's a major release, also create a new section for ``X.Y+1.0`` on the master branch
+- Create a new section, with the name of the release `X.Y.Z+1` on the `X.Y` branch.
+- If it's a major release, also create a new section for `X.Y+1.0` on the master branch
 
-You need to add the estimated date when it is going to be published. If
-no date can be known at that time, we should use ``Undefined``.
+You need to add the estimated date when it is going to be published. If no date can be
+known at that time, we should use `Undefined`.
 
 #### Whatsnew
 
-If it's a major release, create a new ``What's new in Pylint X.Y+1`` document
-Take a look at the examples from ``doc/whatsnew``.
+If it's a major release, create a new `What's new in Pylint X.Y+1` document Take a look
+at the examples from `doc/whatsnew`.
 
 ### Versions
 
-Update ``__version__`` to ``X.Y+1.0`` in ``pylint/__pkginfo__.py`` for ``master`` and to
-``X.Y.Z+1`` for the ``X.Y`` branch. ``dev_version`` should also be back to an
-integer after the tag.
+Update `__version__` to `X.Y+1.0` in `pylint/__pkginfo__.py` for `master` and to
+`X.Y.Z+1` for the `X.Y` branch. `dev_version` should also be back to an integer after
+the tag.