fix(js formatting): added support for jsbeautify ignore blocks

closes #367

.github/ISSUE_TEMPLATE/linter_bug_report.md

@@ -28,4 +28,7 @@ labels: [":microbe: bug", ":mag: linter"]
 ## How To Reproduce
 <!-- Steps to reproduce the behavior -->
 
+## Contents of .djlintrc/pyproject.toml [tool.djlint]
+<!-- please include your config -->
+
 <!-- Thanks! 🤠 -->

pyproject.toml

@@ -69,3 +69,6 @@ disable = "E1120, R0914, E0401, R0912, R0916, R0913, W0104, R0801, W1404, R0902,
 
 [tool.pylint.TYPECHECK]
 ignored-modules = "regex"
+
+[tool.djlint]
+format_js = true

src/djlint/formatter/js.py

@@ -18,15 +18,40 @@ def format_js(html: str, config: Config) -> str:
 
         indent = len(match.group(1)) * " "
         inner_indent = indent + config.indent
+
         opts = BeautifierOptions(config.js_config)
 
-        beautified = (
-            "\n"
-            + inner_indent
-            + ("\n" + inner_indent).join(
-                jsbeautifier.beautify(match.group(3), opts).splitlines()
-            )
-        )
+        beautified_lines = jsbeautifier.beautify(match.group(3), opts).splitlines()
+        beautified = ""
+
+        # add indent back
+        ignore_indent = False
+        for line in beautified_lines:
+
+            if re.search(
+                re.compile(
+                    r"\/\*[ ]*?beautify[ ]+?preserve:end[ ]*?\*\/",
+                    re.DOTALL | re.IGNORECASE | re.MULTILINE,
+                ),
+                line,
+            ):
+                line = line.lstrip()
+                ignore_indent = False
+
+            if ignore_indent is False:
+
+                beautified += "\n" + inner_indent + line
+            else:
+                beautified += "\n" + line
+
+            if re.search(
+                re.compile(
+                    r"\/\*[ ]*?beautify[ ]+?preserve:start[ ]*?\*\/",
+                    re.DOTALL | re.IGNORECASE | re.MULTILINE,
+                ),
+                line,
+            ):
+                ignore_indent = True
 
         return match.group(1) + match.group(2) + beautified + "\n" + indent
 

tests/test_config/test_scripts_styles/ignore.html

@@ -0,0 +1,8 @@
+<script>
+    /* beautify preserve:start */
+function(){}
+    function(){}
+        function(){}
+
+    /* beautify preserve:end */
+</script>

tests/test_config/test_scripts_styles/test_config.py

@@ -2,10 +2,10 @@
 
 run::
 
-   pytest tests/test_config/test_json/test_config.py --cov=src/djlint --cov-branch \
+   pytest tests/test_config/test_scripts_styles/test_config.py --cov=src/djlint --cov-branch \
           --cov-report xml:coverage.xml --cov-report term-missing
 
-   pytest tests/test_config/test_json/test_config.py::test_config
+   pytest tests/test_config/test_scripts_styles/test_config.py::test_ignore
 
 """
 # pylint: disable=C0116
@@ -23,5 +23,15 @@ def test_config(runner: CliRunner) -> None:
             "--check",
         ],
     )
-    print(result.output)
+    assert result.exit_code == 0
+
+
+def test_ignore(runner: CliRunner) -> None:
+    result = runner.invoke(
+        djlint,
+        [
+            "tests/test_config/test_scripts_styles/ignore.html",
+            "--check",
+        ],
+    )
     assert result.exit_code == 0