fix: use object type

site/content/docs/04-compile-time.md

@@ -83,7 +83,7 @@ The following options can be passed to the compiler. None are required:
 | `preserveComments` | `false` | If `true`, your HTML comments will be preserved during server-side rendering. By default, they are stripped out.
 | `preserveWhitespace` | `false` | If `true`, whitespace inside and between elements is kept as you typed it, rather than removed or collapsed to a single space where possible.
 | `sourcemap` | `object | string` | An initial sourcemap that will be merged into the final output sourcemap. This is usually the preprocessor sourcemap.
-| `enableSourcemap` | `boolean | 'js' | 'css'` | If `true`, Svelte generate sourcemaps for components. Use `js` or `css` for more granular control of sourcemap generation. By default, this is `true`.
+| `enableSourcemap` | `boolean | { js: boolean; css: boolean; }` | If `true`, Svelte generate sourcemaps for components. Use an object with `js` or `css` for more granular control of sourcemap generation. By default, this is `true`.
 | `outputFilename` | `null` | A `string` used for your JavaScript sourcemap.
 | `cssOutputFilename` | `null` | A `string` used for your CSS sourcemap.
 | `sveltePath` | `"svelte"` | The location of the `svelte` package. Any imports from `svelte` or `svelte/[module]` will be modified accordingly.

src/compiler/compile/Component.ts

@@ -36,6 +36,7 @@ import { clone } from '../utils/clone';
 import compiler_warnings from './compiler_warnings';
 import compiler_errors from './compiler_errors';
 import { extract_ignores_above_position, extract_svelte_ignore_from_comments } from '../utils/extract_svelte_ignore';
+import check_enable_sourcemap from './utils/check_enable_sourcemap';
 
 interface ComponentOptions {
 	namespace?: string;
@@ -343,7 +344,7 @@ export default class Component {
 				? { code: null, map: null }
 				: result.css;
 				
-			const jsSourcemapEnabled = compile_options.enableSourcemap === true || compile_options.enableSourcemap === 'js';
+			const jsSourcemapEnabled = check_enable_sourcemap(compile_options.enableSourcemap, 'js');
 
 			if (!jsSourcemapEnabled) {
 				js = print(program);

src/compiler/compile/render_dom/index.ts

@@ -10,6 +10,7 @@ import { ImportDeclaration, ClassDeclaration, FunctionExpression, Node, Statemen
 import { apply_preprocessor_sourcemap } from '../../utils/mapped_code';
 import { RawSourceMap, DecodedSourceMap } from '@ampproject/remapping/dist/types/types';
 import { flatten } from '../../utils/flatten';
+import check_enable_sourcemap from '../utils/check_enable_sourcemap';
 
 export default function dom(
 	component: Component,
@@ -34,7 +35,7 @@ export default function dom(
 
 	const css = component.stylesheet.render(options.filename, !options.customElement);
 	
-	const cssSourcemapEnabled = options.enableSourcemap === true || options.enableSourcemap === 'css';
+	const cssSourcemapEnabled = check_enable_sourcemap(options.enableSourcemap, 'css');
 
 	if (cssSourcemapEnabled) {
 		css.map = apply_preprocessor_sourcemap(options.filename, css.map, options.sourcemap as string | RawSourceMap | DecodedSourceMap);

src/compiler/compile/render_ssr/index.ts

@@ -10,6 +10,7 @@ import { extract_names } from 'periscopic';
 import { walk } from 'estree-walker';
 
 import { invalidate } from '../render_dom/invalidate';
+import check_enable_sourcemap from '../utils/check_enable_sourcemap';
 
 export default function ssr(
 	component: Component,
@@ -200,7 +201,7 @@ export default function ssr(
 		main
 	].filter(Boolean);
 
-	const cssSourcemapEnabled = options.enableSourcemap === true || options.enableSourcemap === 'css';
+	const cssSourcemapEnabled = check_enable_sourcemap(options.enableSourcemap, 'css');
 	
 	const js = b`
 		${css.code ? b`

src/compiler/compile/utils/check_enable_sourcemap.ts

@@ -0,0 +1,10 @@
+import { EnableSourcemap } from '../../interfaces';
+
+export default function check_enable_sourcemap(
+  enable_sourcemap: EnableSourcemap,
+  namespace: keyof Extract<EnableSourcemap, object>
+) {
+  return typeof enable_sourcemap === 'boolean'
+    ? enable_sourcemap
+    : enable_sourcemap[namespace];
+}

src/compiler/interfaces.ts

@@ -131,6 +131,8 @@ export interface Warning {
 
 export type ModuleFormat = 'esm' | 'cjs';
 
+export type EnableSourcemap = boolean | { js: boolean; css: boolean };
+
 export type CssHashGetter = (args: {
 	name: string;
 	filename: string | undefined;
@@ -147,7 +149,7 @@ export interface CompileOptions {
 	varsReport?: 'full' | 'strict' | false;
 
 	sourcemap?: object | string;
-	enableSourcemap?: boolean | 'js' | 'css';
+	enableSourcemap?: EnableSourcemap;
 	outputFilename?: string;
 	cssOutputFilename?: string;
 	sveltePath?: string;

test/sourcemaps/samples/only-css-sourcemap/_config.js

@@ -1,5 +1,5 @@
 export default {
   compile_options: {
-    enableSourcemap: 'css'
+    enableSourcemap: { css: true }
   }
 };

test/sourcemaps/samples/only-js-sourcemap/_config.js

@@ -1,5 +1,5 @@
 export default {
   compile_options: {
-    enableSourcemap: 'js'
+    enableSourcemap: { js: true }
   }
 };