early exportMode detection, remove default indirection

src/Chunk.ts

@@ -2,7 +2,6 @@ import { timeEnd, timeStart } from './utils/timers';
 import MagicString, { Bundle as MagicStringBundle, SourceMap } from 'magic-string';
 import Module from './Module';
 import finalisers from './finalisers/index';
-import getExportMode from './utils/getExportMode';
 import getIndentString from './utils/getIndentString';
 import transformBundle from './utils/transformBundle';
 import collapseSourcemaps from './utils/collapseSourcemaps';
@@ -84,7 +83,7 @@ function getGlobalName(
 export default class Chunk {
 	hasDynamicImport: boolean = false;
 	indentString: string = undefined;
-	namedExportsMode: boolean = true;
+	exportMode: string = 'named';
 	usedModules: Module[] = undefined;
 	id: string = undefined;
 	name: string;
@@ -505,7 +504,9 @@ export default class Chunk {
 				safeName = getSafeName(variable.name);
 				toDeshadow.add(safeName);
 			} else {
-				safeName = `${(<Module>module).chunk.name}.${module.chunk.getVariableExportName(variable)}`;
+				const chunk = (<Module>module).chunk;
+				if (chunk.exportMode === 'default') safeName = chunk.name;
+				else safeName = `${chunk.name}.${module.chunk.getVariableExportName(variable)}`;
 			}
 			if (safeName) variable.setSafeName(safeName);
 		});
@@ -800,12 +801,9 @@ export default class Chunk {
 			});
 		}
 
-		const exportMode = this.isEntryModuleFacade && getExportMode(this, options);
-		this.namedExportsMode = exportMode !== 'default';
-
 		this.renderedDeclarations = {
 			dependencies: this.getChunkDependencyDeclarations(options, inputBase),
-			exports: exportMode === 'none' ? [] : this.getChunkExportDeclarations()
+			exports: this.exportMode === 'none' ? [] : this.getChunkExportDeclarations()
 		};
 
 		timeEnd('render modules', 3);
@@ -992,7 +990,7 @@ export default class Chunk {
 			let relPath = this.id ? normalize(relative(dirname(this.id), depId)) : depId;
 			if (!relPath.startsWith('../')) relPath = './' + relPath;
 
-			if (dep instanceof Chunk) renderedDependency.namedExportsMode = dep.namedExportsMode;
+			if (dep instanceof Chunk) renderedDependency.namedExportsMode = dep.exportMode !== 'default';
 			renderedDependency.id = relPath;
 		}
 
@@ -1009,7 +1007,7 @@ export default class Chunk {
 			this.renderedSource,
 			{
 				indentString: this.indentString,
-				namedExportsMode: this.namedExportsMode,
+				namedExportsMode: this.exportMode !== 'default',
 				hasExports,
 				intro: addons.intro,
 				outro: addons.outro,

src/finalisers/cjs.ts

@@ -45,11 +45,7 @@ export default function cjs(
 					return `require('${id}');`;
 				}
 
-				if (!namedExportsMode) {
-					return `${varOrConst} ${name} = { default: require('${id}') };`;
-				}
-
-				if (!interop || isChunk || !exportsDefault) {
+				if (!interop || isChunk || !exportsDefault || !namedExportsMode) {
 					return `${varOrConst} ${name} = require('${id}');`;
 				}
 

src/finalisers/shared/getExportBlock.ts

@@ -22,7 +22,7 @@ export default function getExportBlock(
 				if (!dep.reexports) return false;
 				return dep.reexports.some(expt => {
 					if (expt.reexported === 'default') {
-						local = `${dep.name}.${expt.imported}`;
+						local = dep.namedExportsMode ? `${dep.name}.${expt.imported}` : dep.name;
 						return true;
 					}
 					return false;

src/finalisers/shared/getInteropBlock.ts

@@ -8,7 +8,7 @@ export default function getInteropBlock(
 ) {
 	return dependencies
 		.map(({ name, exportsNames, exportsDefault, namedExportsMode }) => {
-			if (!namedExportsMode) return `${name} = { default: ${name} };`;
+			if (!namedExportsMode) return;
 
 			if (!exportsDefault || options.interop === false) return null;
 

src/rollup/index.ts

@@ -21,6 +21,7 @@ import {
 	Plugin,
 	ModuleJSON
 } from './types';
+import getExportMode from '../utils/getExportMode';
 
 export const VERSION = '<@VERSION@>';
 
@@ -169,6 +170,7 @@ export default function rollup(
 						.then(addons => {
 							chunk.generateInternalExports(outputOptions);
 							const inputBase = dirname(resolve(inputOptions.input));
+							chunk.exportMode = getExportMode(chunk, outputOptions);
 							chunk.preRender(outputOptions, inputBase);
 							chunk.id = basename(inputOptions.input);
 							return chunk.render(outputOptions, addons);
@@ -336,10 +338,11 @@ export default function rollup(
 							return (
 								Promise.resolve()
 									.then(() => {
-										if (!inputOptions.experimentalPreserveModules) {
-											for (let chunk of chunks) {
+										for (let chunk of chunks) {
+											if (!inputOptions.experimentalPreserveModules)
 												chunk.generateInternalExports(outputOptions);
-											}
+											if (chunk.isEntryModuleFacade)
+												chunk.exportMode = getExportMode(chunk, outputOptions);
 										}
 										for (let chunk of chunks) {
 											chunk.preRender(outputOptions, inputBase);

test/chunking-form/samples/entry-chunk-export-mode/_expected/amd/main1.js

@@ -1,7 +1,5 @@
 define(['./main2.js'], function (main2) { 'use strict';
 
-	main2 = { default: main2 };
-
-	main2.default();
+	main2();
 
 });

test/chunking-form/samples/entry-chunk-export-mode/_expected/cjs/main1.js

@@ -1,5 +1,5 @@
 'use strict';
 
-var main2 = { default: require('./main2.js') };
+var main2 = require('./main2.js');
 
-main2.default();
+main2();

test/chunking-form/samples/import-variable-duplicates/_expected/amd/head.js

@@ -1,9 +1,7 @@
 define(['./first.js'], function (first) { 'use strict';
 
-	first = { default: first };
 
 
-
-	return first.default;
+	return first;
 
 });

test/chunking-form/samples/import-variable-duplicates/_expected/amd/main1.js

@@ -1,8 +1,6 @@
 define(['./first.js'], function (first) { 'use strict';
 
-	first = { default: first };
-
-	console.log(first.default);
-	console.log(first.default);
+	console.log(first);
+	console.log(first);
 
 });

test/chunking-form/samples/import-variable-duplicates/_expected/amd/main2.js

@@ -1,7 +1,5 @@
 define(['./first.js'], function (first) { 'use strict';
 
-	first = { default: first };
-
 
 
 });

test/chunking-form/samples/import-variable-duplicates/_expected/cjs/head.js

@@ -1,7 +1,7 @@
 'use strict';
 
-var first = { default: require('./first.js') };
+var first = require('./first.js');
 
 
 
-module.exports = first.default;
+module.exports = first;

test/chunking-form/samples/import-variable-duplicates/_expected/cjs/main1.js

@@ -1,6 +1,6 @@
 'use strict';
 
-var first = { default: require('./first.js') };
+var first = require('./first.js');
 
-console.log(first.default);
-console.log(first.default);
+console.log(first);
+console.log(first);