add serializer for acorn Position

lib/util/registerExternalSerializer.js

@@ -7,6 +7,7 @@
 
 const ObjectMiddleware = require("../serialization/ObjectMiddleware");
 
+const Position = /** @type {TODO} */ (require("acorn")).Position;
 const SourceLocation = require("acorn").SourceLocation;
 const CachedSource = require("webpack-sources").CachedSource;
 const ConcatSource = require("webpack-sources").ConcatSource;
@@ -17,6 +18,7 @@ const ReplaceSource = require("webpack-sources").ReplaceSource;
 const SourceMapSource = require("webpack-sources").SourceMapSource;
 
 /** @typedef {import("../Dependency").RealDependencyLocation} RealDependencyLocation */
+/** @typedef {import("../Dependency").SourcePosition} SourcePosition */
 
 const CURRENT_MODULE = "webpack/lib/util/registerExternalSerializer";
 
@@ -234,6 +236,34 @@ ObjectMiddleware.register(
 	}()
 );
 
+ObjectMiddleware.register(
+	Position,
+	CURRENT_MODULE,
+	"acorn/Position",
+	new class PositionSerializer {
+		/**
+		 * @param {Position} pos the position to be serialized
+		 * @param {ObjectMiddleware.ObjectSerializerContext} context context
+		 * @returns {void}
+		 */
+		serialize(pos, { write }) {
+			write(pos.line);
+			write(pos.column);
+		}
+
+		/**
+		 * @param {ObjectMiddleware.ObjectDeserializerContext} context context
+		 * @returns {SourcePosition} position
+		 */
+		deserialize({ read }) {
+			return {
+				line: read(),
+				column: read()
+			};
+		}
+	}()
+);
+
 ObjectMiddleware.register(
 	SourceMapSource,
 	CURRENT_MODULE,

tooling/format-file-header.js

@@ -82,12 +82,12 @@ const schema = [
 	},
 	{
 		title: "imports",
-		regexp: /(const (\{\s+\w+(,\s+\w+)*\s+\}|\w+) = require\("[^"]+"\)(\.\w+)*;\n)+\n/g,
+		regexp: /(const (\{\s+\w+(,\s+\w+)*\s+\}|\w+) = (\/\*\* @type \{TODO\} \*\/\s\()?require\("[^"]+"\)\)?(\.\w+)*;\n)+\n/g,
 		updateMessage: "sort imports alphabetically",
 		update(content) {
 			const items = execToArray(
 				content,
-				/const (?:\{\s+\w+(?:,\s+\w+)*\s+\}|\w+) = require\("([^"]+)"\)((?:\.\w+)*);\n/g
+				/const (?:\{\s+\w+(?:,\s+\w+)*\s+\}|\w+) = (?:\/\*\* @type \{TODO\} \*\/\s\()?require\("([^"]+)"\)\)?((?:\.\w+)*);\n/g
 			);
 			items.sort(sortImport);
 			return items.map(item => item.content).join("") + "\n";