Add referenced files to bundle

docs/02-javascript-api.md

@@ -44,9 +44,11 @@ async function build() {
       //   exports: string[],             // exported variable names
       //   facadeModuleId: string | null, // the id of a module that this chunk corresponds to
       //   fileName: string,              // the chunk file name
+      //   implicitlyLoadedBefore: string[]; // entries that should only be loaded after this chunk
       //   imports: string[],             // external modules imported statically by the chunk
       //   isDynamicEntry: boolean,       // is this chunk a dynamic entry point
       //   isEntry: boolean,              // is this chunk a static entry point
+      //   isImplicitEntry: boolean,      // should this chunk only be loaded after other chunks
       //   map: string | null,            // sourcemaps if present
       //   modules: {                     // information about the modules in this chunk
       //     [id: string]: {
@@ -57,6 +59,7 @@ async function build() {
       //     };
       //   },
       //   name: string                   // the name of this chunk as used in naming patterns
+      //   referencedFiles: string[]      // files referenced via import.meta.ROLLUP_FILE_URL_<id>
       //   type: 'chunk',                 // signifies that this is a chunk
       // }
       console.log('Chunk', chunkOrAsset.modules);

docs/05-plugin-development.md

@@ -308,6 +308,7 @@ Called at the end of `bundle.generate()` or immediately before the files are wri
     },
   },
   name: string,
+  referencedFiles: string[],
   type: 'chunk',
 }
 ```

src/Bundle.ts

@@ -86,6 +86,7 @@ export default class Bundle {
 				chunk.id!
 			] = chunk.getPrerenderedChunk() as OutputChunk);
 			chunkDescription.fileName = chunk.id!;
+			chunkDescription.referencedFiles = chunk.getReferencedFiles(this.pluginDriver);
 		}
 		await Promise.all(
 			chunks.map(chunk => {

src/Chunk.ts

@@ -468,6 +468,19 @@ export default class Chunk {
 		};
 	}
 
+	getReferencedFiles(outputPluginDriver: PluginDriver): string[] {
+		const referencedFiles: string[] = [];
+		for (const module of this.orderedModules) {
+			for (const meta of module.importMetas) {
+				const fileName = meta.getReferencedFileName(outputPluginDriver);
+				if (fileName) {
+					referencedFiles.push(fileName);
+				}
+			}
+		}
+		return referencedFiles;
+	}
+
 	getRenderedHash(outputPluginDriver: PluginDriver): string {
 		if (this.renderedHash) return this.renderedHash;
 		const hash = createHash();

src/ast/nodes/MetaProperty.ts

@@ -20,6 +20,14 @@ export default class MetaProperty extends NodeBase {
 
 	private metaProperty?: string | null;
 
+	getReferencedFileName(outputPluginDriver: PluginDriver): string | null {
+		const metaProperty = this.metaProperty as string | null;
+		if (metaProperty && metaProperty.startsWith(FILE_PREFIX)) {
+			return outputPluginDriver.getFileName(metaProperty.substr(FILE_PREFIX.length));
+		}
+		return null;
+	}
+
 	hasEffects(): boolean {
 		return false;
 	}
@@ -31,37 +39,33 @@ export default class MetaProperty extends NodeBase {
 	include() {
 		if (!this.included) {
 			this.included = true;
-			const parent = this.parent;
-			const metaProperty = (this.metaProperty =
-				parent instanceof MemberExpression && typeof parent.propertyKey === 'string'
-					? parent.propertyKey
-					: null);
-			if (
-				metaProperty &&
-				(metaProperty.startsWith(FILE_PREFIX) ||
-					metaProperty.startsWith(ASSET_PREFIX) ||
-					metaProperty.startsWith(CHUNK_PREFIX))
-			) {
-				this.scope.addAccessedGlobalsByFormat(accessedFileUrlGlobals);
-			} else {
-				this.scope.addAccessedGlobalsByFormat(accessedMetaUrlGlobals);
+			if (this.meta.name === 'import') {
+				this.context.addImportMeta(this);
+				const parent = this.parent;
+				const metaProperty = (this.metaProperty =
+					parent instanceof MemberExpression && typeof parent.propertyKey === 'string'
+						? parent.propertyKey
+						: null);
+				if (
+					metaProperty &&
+					(metaProperty.startsWith(FILE_PREFIX) ||
+						metaProperty.startsWith(ASSET_PREFIX) ||
+						metaProperty.startsWith(CHUNK_PREFIX))
+				) {
+					this.scope.addAccessedGlobalsByFormat(accessedFileUrlGlobals);
+				} else {
+					this.scope.addAccessedGlobalsByFormat(accessedMetaUrlGlobals);
+				}
 			}
 		}
 	}
 
-	initialise() {
-		if (this.meta.name === 'import') {
-			this.context.addImportMeta(this);
-		}
-	}
-
 	renderFinalMechanism(
 		code: MagicString,
 		chunkId: string,
 		format: InternalModuleFormat,
 		outputPluginDriver: PluginDriver
 	): void {
-		if (!this.included) return;
 		const parent = this.parent;
 		const metaProperty = this.metaProperty as string | null;
 

src/rollup/types.d.ts

@@ -673,11 +673,13 @@ export interface PreRenderedChunk {
 		[id: string]: RenderedModule;
 	};
 	name: string;
+	referencedFiles?: string[];
 	type: 'chunk';
 }
 
 export interface RenderedChunk extends PreRenderedChunk {
 	fileName: string;
+	referencedFiles: string[];
 }
 
 export interface OutputChunk extends RenderedChunk {

test/function/samples/emit-file/file-references-in-bundle/_config.js

@@ -0,0 +1,39 @@
+const assert = require('assert');
+
+module.exports = {
+	description: 'lists referenced files in the bundle',
+	options: {
+		input: 'main',
+		plugins: {
+			transform() {
+				return `export const asset = import.meta.ROLLUP_FILE_URL_${this.emitFile({
+					type: 'asset',
+					name: 'asset.txt',
+					source: 'asset'
+				})};\nexport const chunk = import.meta.ROLLUP_FILE_URL_${this.emitFile({
+					type: 'chunk',
+					id: 'ref.js'
+				})}`;
+			},
+			generateBundle(options, bundle) {
+				assert.deepStrictEqual(bundle['main.js'].referencedFiles, [
+					'assets/asset.txt',
+					'chunks/ref.js'
+				]);
+			}
+		},
+		output: {
+			assetFileNames: 'assets/[name][extname]',
+			chunkFileNames: 'chunks/[name].js'
+		}
+	},
+	context: {
+		__dirname: 'dir'
+	},
+	exports(exports) {
+		assert.deepStrictEqual(exports, {
+			asset: 'file:///dir/assets/asset.txt',
+			chunk: 'file:///dir/chunks/ref.js'
+		});
+	}
+};

test/function/samples/emit-file/file-references-in-bundle/main.js

@@ -0,0 +1 @@
+throw new Error('not executed');

test/function/samples/emit-file/file-references-in-bundle/ref.js

@@ -0,0 +1 @@
+console.log('Hello');

test/watch/index.js

@@ -1243,7 +1243,7 @@ describe('rollup.watch', () => {
 						'END',
 						() => {
 							assert.strictEqual(run('../_tmp/output/bundle.js'), 42);
-							assert.strictEqual(watchChangeIds.size, 0);
+							assert.deepStrictEqual([...watchChangeIds], []);
 							for (const file of watchFiles) sander.writeFileSync(file, 'changed');
 						},
 						'START',