[Create Block] Allows custom keys to be generated in block.json files and package.json files

packages/create-block/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### New Feature
+
+-   Add new `customPackageJSON` and `customBlockJSON` keys to allow templates to define custom keys for the resulting `package.json` and `block.json` files respectively.[#44649](https://github.com/WordPress/gutenberg/pull/44649)
+
 ## 4.2.0 (2022-09-21)
 
 ## 4.0.0 (2022-08-24)

packages/create-block/lib/init-block.js

@@ -29,6 +29,7 @@ async function initBlockJSON( {
 	editorScript,
 	editorStyle,
 	style,
+	customBlockJSON,
 } ) {
 	info( '' );
 	info( 'Creating a "block.json" file.' );
@@ -56,6 +57,7 @@ async function initBlockJSON( {
 					editorScript,
 					editorStyle,
 					style,
+					...customBlockJSON,
 				} ).filter( ( [ , value ] ) => !! value )
 			),
 			null,

packages/create-block/lib/init-package-json.js

@@ -24,6 +24,7 @@ module.exports = async ( {
 	npmDevDependencies,
 	customScripts,
 	isDynamicVariant,
+	customPackageJSON,
 } ) => {
 	const cwd = join( process.cwd(), slug );
 
@@ -58,6 +59,7 @@ module.exports = async ( {
 					...( wpEnv && { env: 'wp-env' } ),
 					...customScripts,
 				},
+				...customPackageJSON,
 			} ).filter( ( [ , value ] ) => !! value )
 		)
 	);

packages/create-block/lib/scaffold.js

@@ -44,6 +44,8 @@ module.exports = async (
 		editorStyle,
 		style,
 		variantVars,
+		customPackageJSON,
+		customBlockJSON,
 	}
 ) => {
 	slug = slug.toLowerCase();
@@ -99,6 +101,8 @@ module.exports = async (
 		editorScript,
 		editorStyle,
 		style,
+		customPackageJSON,
+		customBlockJSON,
 		...variantVars,
 	};