diff --git a/packages/js/admin-e2e-tests/changelog/fix-changelogger-phpcs b/packages/js/admin-e2e-tests/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/admin-e2e-tests/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/admin-e2e-tests/composer.json b/packages/js/admin-e2e-tests/composer.json
index 81b02367054..90649ce14ac 100644
--- a/packages/js/admin-e2e-tests/composer.json
+++ b/packages/js/admin-e2e-tests/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/api/changelog/fix-changelogger-phpcs b/packages/js/api/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/api/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/api/composer.json b/packages/js/api/composer.json
index 0e93d583efb..384ed03b22e 100644
--- a/packages/js/api/composer.json
+++ b/packages/js/api/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/components/changelog/fix-changelogger-phpcs b/packages/js/components/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/components/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/components/composer.json b/packages/js/components/composer.json
index 45f2dfee81f..9bb6df42457 100644
--- a/packages/js/components/composer.json
+++ b/packages/js/components/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/csv-export/changelog/fix-changelogger-phpcs b/packages/js/csv-export/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/csv-export/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/csv-export/composer.json b/packages/js/csv-export/composer.json
index 9a798be3159..2ac2f972b1e 100644
--- a/packages/js/csv-export/composer.json
+++ b/packages/js/csv-export/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/currency/changelog/fix-changelogger-phpcs b/packages/js/currency/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/currency/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/currency/composer.json b/packages/js/currency/composer.json
index 80cc0bc3e64..f4975d986e9 100644
--- a/packages/js/currency/composer.json
+++ b/packages/js/currency/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/customer-effort-score/changelog/fix-changelogger-phpcs b/packages/js/customer-effort-score/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/customer-effort-score/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/customer-effort-score/composer.json b/packages/js/customer-effort-score/composer.json
index f8caaaa07d3..bc3c8c58268 100644
--- a/packages/js/customer-effort-score/composer.json
+++ b/packages/js/customer-effort-score/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/data/changelog/fix-changelogger-phpcs b/packages/js/data/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/data/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/data/composer.json b/packages/js/data/composer.json
index 9212cbdbd1d..62170ffbdf8 100644
--- a/packages/js/data/composer.json
+++ b/packages/js/data/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/date/changelog/fix-changelogger-phpcs b/packages/js/date/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/date/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/date/composer.json b/packages/js/date/composer.json
index de7796f9a9f..ba72efa1dc9 100644
--- a/packages/js/date/composer.json
+++ b/packages/js/date/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/dependency-extraction-webpack-plugin/changelog/fix-changelogger-phpcs b/packages/js/dependency-extraction-webpack-plugin/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/dependency-extraction-webpack-plugin/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/dependency-extraction-webpack-plugin/composer.json b/packages/js/dependency-extraction-webpack-plugin/composer.json
index 8f331940dac..e093fbc6bc4 100644
--- a/packages/js/dependency-extraction-webpack-plugin/composer.json
+++ b/packages/js/dependency-extraction-webpack-plugin/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/eslint-plugin/changelog/fix-changelogger-phpcs b/packages/js/eslint-plugin/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/eslint-plugin/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/eslint-plugin/composer.json b/packages/js/eslint-plugin/composer.json
index 983cb1986e3..8d62a41f972 100644
--- a/packages/js/eslint-plugin/composer.json
+++ b/packages/js/eslint-plugin/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/experimental/changelog/fix-changelogger-phpcs b/packages/js/experimental/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/experimental/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/experimental/composer.json b/packages/js/experimental/composer.json
index 85ea1a64722..e3476415ee7 100644
--- a/packages/js/experimental/composer.json
+++ b/packages/js/experimental/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/explat/changelog/fix-changelogger-phpcs b/packages/js/explat/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/explat/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/explat/composer.json b/packages/js/explat/composer.json
index 2def9999e77..c743758573e 100644
--- a/packages/js/explat/composer.json
+++ b/packages/js/explat/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/extend-cart-checkout-block/changelog/fix-changelogger-phpcs b/packages/js/extend-cart-checkout-block/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/extend-cart-checkout-block/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/extend-cart-checkout-block/composer.json b/packages/js/extend-cart-checkout-block/composer.json
index 2f930244052..9c44b2a742c 100644
--- a/packages/js/extend-cart-checkout-block/composer.json
+++ b/packages/js/extend-cart-checkout-block/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/navigation/changelog/fix-changelogger-phpcs b/packages/js/navigation/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/navigation/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/navigation/composer.json b/packages/js/navigation/composer.json
index 3e8269b5ad8..b7f58a6164e 100644
--- a/packages/js/navigation/composer.json
+++ b/packages/js/navigation/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/number/changelog/fix-changelogger-phpcs b/packages/js/number/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/number/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/number/composer.json b/packages/js/number/composer.json
index 29ed9a6abc6..caf1ed82b65 100644
--- a/packages/js/number/composer.json
+++ b/packages/js/number/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/onboarding/changelog/fix-changelogger-phpcs b/packages/js/onboarding/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/onboarding/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/onboarding/composer.json b/packages/js/onboarding/composer.json
index 0cb0739e711..20ce9b28533 100644
--- a/packages/js/onboarding/composer.json
+++ b/packages/js/onboarding/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/packages/js/tracks/changelog/fix-changelogger-phpcs b/packages/js/tracks/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/packages/js/tracks/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/packages/js/tracks/composer.json b/packages/js/tracks/composer.json
index e868a78e030..8c8141d9e26 100644
--- a/packages/js/tracks/composer.json
+++ b/packages/js/tracks/composer.json
@@ -15,7 +15,7 @@
 	"extra": {
 		"changelogger": {
 			"formatter": {
-				"filename": "../../../tools/changelogger/PackageFormatter.php"
+				"filename": "../../../tools/changelogger/class-package-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/plugins/woocommerce-beta-tester/changelog/fix-changelogger-phpcs b/plugins/woocommerce-beta-tester/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/plugins/woocommerce-beta-tester/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/plugins/woocommerce-beta-tester/composer.json b/plugins/woocommerce-beta-tester/composer.json
index 5d4decbf0e3..34687ba440f 100644
--- a/plugins/woocommerce-beta-tester/composer.json
+++ b/plugins/woocommerce-beta-tester/composer.json
@@ -36,7 +36,7 @@
 		},
 		"changelogger": {
 			"formatter": {
-				"filename": "../../tools/changelogger/PluginFormatter.php"
+				"filename": "../../tools/changelogger/class-plugin-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/plugins/woocommerce/changelog/fix-changelogger-phpcs b/plugins/woocommerce/changelog/fix-changelogger-phpcs
new file mode 100644
index 00000000000..10fdefc7d22
--- /dev/null
+++ b/plugins/woocommerce/changelog/fix-changelogger-phpcs
@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: PHPCS violation fixes
+
+
diff --git a/plugins/woocommerce/composer.json b/plugins/woocommerce/composer.json
index 58c05d0ccf6..1cf78d29c85 100644
--- a/plugins/woocommerce/composer.json
+++ b/plugins/woocommerce/composer.json
@@ -126,7 +126,7 @@
 		},
 		"changelogger": {
 			"formatter": {
-				"filename": "../../tools/changelogger/LegacyCoreFormatter.php"
+				"filename": "../../tools/changelogger/class-legacy-core-formatter.php"
 			},
 			"types": {
 				"fix": "Fixes an existing bug",
diff --git a/tools/changelogger/Formatter.php b/tools/changelogger/class-formatter.php
similarity index 95%
rename from tools/changelogger/Formatter.php
rename to tools/changelogger/class-formatter.php
index 4ba27e5bfda..a74816fefa7 100644
--- a/tools/changelogger/Formatter.php
+++ b/tools/changelogger/class-formatter.php
@@ -1,4 +1,9 @@
 <?php
+/**
+ * Formatter class
+ *
+ * @package  WooCommerce
+ */
 
 namespace Automattic\WooCommerce\MonorepoTools\Changelogger;
 
@@ -89,16 +94,16 @@ class Formatter extends KeepAChangelogParser {
 
 		$release_url = '';
 		if ( strpos( $path[1], 'packages/js/' ) !== false ) {
-			$package = substr( $path[1], 12 );
-			$release_url ='https://www.npmjs.com/package/@woocommerce/' . $package . '/v/';
-		} else if ( 'plugins/woocommerce' === $path[1] ) {
+			$package     = substr( $path[1], 12 );
+			$release_url = 'https://www.npmjs.com/package/@woocommerce/' . $package . '/v/';
+		} elseif ( 'plugins/woocommerce' === $path[1] ) {
 			$release_url = 'https://github.com/woocommerce/woocommerce/releases/tag/';
-		} else if ( 'plugins/woocommerce-beta-tester' === $path[1] ) {
+		} elseif ( 'plugins/woocommerce-beta-tester' === $path[1] ) {
 			$release_url = 'https://github.com/woocommerce/woocommerce/releases/tag/';
 		} else {
 			throw new \InvalidArgumentException( 'Release URL not found.' );
 		}
-	
+
 		return $release_url . $version;
 	}
 
@@ -197,13 +202,13 @@ class Formatter extends KeepAChangelogParser {
 					$row          = preg_replace( '/' . $this->bullet . '/', '', $row, 1 );
 					$row_segments = explode( ' - ', $row );
 					$significance = trim( strtolower( $row_segments[0] ) );
-					
+
 					array_push(
 						$changes,
 						array(
 							'subheading'   => $is_subentry ? '' : trim( $row_segments[0] ),
-							'content'      => $is_subentry ? trim( $row ) : trim( isset($row_segments[1]) ? $row_segments[1] : '' ),
-							'significance' => in_array( $significance, array( 'patch', 'minor', 'major' ) ) ? $significance : null,
+							'content'      => $is_subentry ? trim( $row ) : trim( isset( $row_segments[1] ) ? $row_segments[1] : '' ),
+							'significance' => in_array( $significance, array( 'patch', 'minor', 'major' ), true ) ? $significance : null,
 						)
 					);
 				}
diff --git a/tools/changelogger/LegacyCoreFormatter.php b/tools/changelogger/class-legacy-core-formatter.php
similarity index 81%
rename from tools/changelogger/LegacyCoreFormatter.php
rename to tools/changelogger/class-legacy-core-formatter.php
index 9e3d5f1d44f..f6b08b04a67 100644
--- a/tools/changelogger/LegacyCoreFormatter.php
+++ b/tools/changelogger/class-legacy-core-formatter.php
@@ -1,4 +1,9 @@
 <?php
+/**
+ * Legacy_Core_Formatter class
+ *
+ * @package  WooCommerce
+ */
 
 namespace Automattic\WooCommerce\MonorepoTools\Changelogger;
 
@@ -9,14 +14,14 @@ use Automattic\Jetpack\Changelogger\FormatterPlugin;
  * Jetpack Changelogger Formatter for WooCommerce plugins
  */
 
-require_once 'Formatter.php';
+require_once 'class-formatter.php';
 
 /**
  * Jetpack Changelogger Formatter for Legacy Core Changelog
  *
  * Class Formatter
  */
-class LegacyCoreFormatter extends Formatter implements FormatterPlugin {
+class Legacy_Core_Formatter extends Formatter implements FormatterPlugin {
 
 	/**
 	 * Bullet for changes.
@@ -35,13 +40,14 @@ class LegacyCoreFormatter extends Formatter implements FormatterPlugin {
 
 	/**
 	 * Returns an mapping the subheading to the type key.
-	 * 
+	 *
 	 * @return array
 	 */
 	private function getSubheadingTypeMapping() {
 		$woocommerce_path = dirname( dirname( __DIR__ ) ) . '/plugins/woocommerce';
 		$composer_file    = $woocommerce_path . '/composer.json';
-		$composer_config  = json_decode( file_get_contents( $composer_file ), true );
+		// phpcs:disable WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
+		$composer_config = json_decode( file_get_contents( $composer_file ), true );
 		return array_flip( $composer_config['extra']['changelogger']['types'] );
 	}
 
@@ -59,8 +65,8 @@ class LegacyCoreFormatter extends Formatter implements FormatterPlugin {
 
 		foreach ( $changelog->getEntries() as $entry ) {
 			$version = $entry->getVersion();
-			if ( substr_count( $version, '.' ) == 1 ) {
-				$version .= '.0';	
+			if ( substr_count( $version, '.' ) === 1 ) {
+				$version .= '.0';
 			}
 
 			$ret .= "= $version YYYY-mm-dd =\n\n";
diff --git a/tools/changelogger/PackageFormatter.php b/tools/changelogger/class-package-formatter.php
similarity index 77%
rename from tools/changelogger/PackageFormatter.php
rename to tools/changelogger/class-package-formatter.php
index 09149e39588..3e2e8938b89 100644
--- a/tools/changelogger/PackageFormatter.php
+++ b/tools/changelogger/class-package-formatter.php
@@ -1,4 +1,9 @@
 <?php
+/**
+ * Package_Formatter class
+ *
+ * @package  WooCommerce
+ */
 
 namespace Automattic\WooCommerce\MonorepoTools\Changelogger;
 
@@ -8,14 +13,14 @@ use Automattic\Jetpack\Changelogger\FormatterPlugin;
  * Jetpack Changelogger Formatter for WooCommerce packages
  */
 
-require_once 'Formatter.php';
+require_once 'class-formatter.php';
 
 /**
  * Jetpack Changelogger Formatter for WooCommerce Packages
  *
  * Class Formatter
  */
-class PackageFormatter extends Formatter implements FormatterPlugin {
+class Package_Formatter extends Formatter implements FormatterPlugin {
 	/**
 	 * Prologue text.
 	 *
@@ -27,8 +32,8 @@ class PackageFormatter extends Formatter implements FormatterPlugin {
 	 * Return the epilogue string based on the package being released.
 	 */
 	public function getEpilogue() {
-		$cwd = getcwd();
-		$pos = stripos( $cwd, 'packages/js/' );
+		$cwd     = getcwd();
+		$pos     = stripos( $cwd, 'packages/js/' );
 		$package = substr( $cwd, $pos + 12 );
 
 		return '[See legacy changelogs for previous versions](https://github.com/woocommerce/woocommerce/blob/68581955106947918d2b17607a01bdfdf22288a9/packages/js/' . $package . '/CHANGELOG.md).';
diff --git a/tools/changelogger/PluginFormatter.php b/tools/changelogger/class-plugin-formatter.php
similarity index 78%
rename from tools/changelogger/PluginFormatter.php
rename to tools/changelogger/class-plugin-formatter.php
index 20208075364..eb349031f12 100644
--- a/tools/changelogger/PluginFormatter.php
+++ b/tools/changelogger/class-plugin-formatter.php
@@ -1,4 +1,9 @@
 <?php
+/**
+ * Plugin_Formatter class
+ *
+ * @package  WooCommerce
+ */
 
 namespace Automattic\WooCommerce\MonorepoTools\Changelogger;
 
@@ -8,14 +13,14 @@ use Automattic\Jetpack\Changelogger\FormatterPlugin;
  * Jetpack Changelogger Formatter for WooCommerce plugins
  */
 
-require_once 'Formatter.php';
+require_once 'class-formatter.php';
 
 /**
  * Jetpack Changelogger Formatter for WooCommerce Plugins
  *
  * Class Formatter
  */
-class PluginFormatter extends Formatter implements FormatterPlugin {
+class Plugin_Formatter extends Formatter implements FormatterPlugin {
 	/**
 	 * Epilogue text.
 	 *