add a compiler option to output SSR code

rollup.config.main.js

@@ -12,5 +12,8 @@ export default {
 		commonjs()
 	],
 	external: [ 'magic-string' ],
+	globals: {
+		'magic-string': 'MagicString'
+	},
 	sourceMap: true
 };

rollup.config.ssr.js

@@ -12,7 +12,7 @@ export default {
 		nodeResolve({ jsnext: true, module: true }),
 		commonjs()
 	],
-	external: [ path.resolve( 'src/index.js' ), 'magic-string' ],
+	external: [ path.resolve( 'src/index.js' ), 'fs', 'magic-string' ],
 	paths: {
 		[ path.resolve( 'src/index.js' ) ]: '../compiler/svelte.js'
 	},

src/generate/index.js

@@ -588,8 +588,7 @@ export default function generate ( parsed, source, options, names ) {
 	const intro = getIntro( format, options, imports );
 	if ( intro ) addString( intro );
 
-	// a filename is necessary for sourcemap generation
-	const filename = options.filename || 'SvelteComponent.html';
+	const { filename } = options;
 
 	parts.forEach( str => {
 		const chunk = str.replace( pattern, '' );

src/index.js

@@ -1,23 +1,36 @@
 import parse from './parse/index.js';
 import validate from './validate/index.js';
 import generate from './generate/index.js';
+import generateSSR from './server-side-rendering/compile.js';
 
-export function compile ( source, options = {} ) {
-	const parsed = parse( source, options );
+function normalizeOptions ( options ) {
+	return Object.assign( {
+		generate: 'dom',
+
+		// a filename is necessary for sourcemap generation
+		filename: 'SvelteComponent.html',
 
-	if ( !options.onwarn ) {
-		options.onwarn = warning => {
+		onwarn: warning => {
 			if ( warning.loc ) {
 				console.warn( `(${warning.loc.line}:${warning.loc.column}) – ${warning.message}` ); // eslint-disable-line no-console
 			} else {
 				console.warn( warning.message ); // eslint-disable-line no-console
 			}
-		};
-	}
+		}
+	}, options );
+}
+
+export function compile ( source, _options ) {
+	const options = normalizeOptions( _options );
+	const parsed = parse( source, options );
 
 	const { names } = validate( parsed, source, options );
 
-	return generate( parsed, source, options, names );
+	const compiler = options.generate === 'ssr'
+		? generateSSR
+		: generate;
+
+	return compiler( parsed, source, options, names );
 }
 
 export { parse, validate };

src/server-side-rendering/compile.js

@@ -8,10 +8,7 @@ import processCss from '../generate/css/process.js';
 
 const voidElementNames = /^(?:area|base|br|col|command|doctype|embed|hr|img|input|keygen|link|meta|param|source|track|wbr)$/i;
 
-export default function compile ( source, { filename }) {
-	const parsed = parse( source, {} );
-	validate( parsed, source, {} );
-
+export default function compile ( parsed, source, { filename }) {
 	const code = new MagicString( source );
 
 	const templateProperties = {};

src/server-side-rendering/register.js

@@ -1,7 +1,10 @@
 import * as fs from 'fs';
-import compile from './compile.js';
+import { compile } from '../index.js';
 
 require.extensions[ '.html' ] = function ( module, filename ) {
-	const { code } = compile( fs.readFileSync( filename, 'utf-8' ), { filename });
+	const { code } = compile( fs.readFileSync( filename, 'utf-8' ), {
+		filename,
+		generate: 'ssr'
+	});
 	return module._compile( code, filename );
 };