fix: sourcemaps

CHANGELOG.md

@@ -3,12 +3,14 @@
 ## 6.0.0
 
 ### Breaking
+
 The `resolve` option has two parameters now and can return `null`. Thanks to Rene Haas (@KingSora)
 https://github.com/madyankin/postcss-modules/commit/86d8135cb5014d0b2848ef395608ee74d82bd179
 
 Parameters:
-- `file` — a module we want to resolve
-- `importer` — the file that imports the module we want to resolve
+
+-   `file` — a module we want to resolve
+-   `importer` — the file that imports the module we want to resolve
 
 Return value: `string | null | Promise<string | null>`
 
@@ -26,198 +28,199 @@ postcss([
 ```
 
 ### Fixed
-- #140 "'Failed to obtain root' error on Windows" fixed by Pierre LeMoine (@DrInfiniteExplorer) https://github.com/madyankin/postcss-modules/pull/144
 
-## Improved
-- `icss-replace-symbols` replaced with with `icss-utils` by Jason Quense (@jquense). The updated replacer works better and will replace values in selectors, which didn't work until now. https://github.com/madyankin/postcss-modules/pull/145
+-   #140 "'Failed to obtain root' error on Windows" fixed by Pierre LeMoine (@DrInfiniteExplorer) https://github.com/madyankin/postcss-modules/pull/144
+
+### Improved
 
+-   `icss-replace-symbols` replaced with with `icss-utils` by Jason Quense (@jquense). The updated replacer works better and will replace values in selectors, which didn't work until now. https://github.com/madyankin/postcss-modules/pull/145
 
 ## 5.0.0
 
-- Fixed `composes` on Windows by @sapphi-red https://github.com/madyankin/postcss-modules/pull/135
-- Updated Babel to v7 by @sapphi-red. Minimal supported version of Node.js is 10 from now https://github.com/madyankin/postcss-modules/pull/134
+-   Fixed `composes` on Windows by @sapphi-red https://github.com/madyankin/postcss-modules/pull/135
+-   Updated Babel to v7 by @sapphi-red. Minimal supported version of Node.js is 10 from now https://github.com/madyankin/postcss-modules/pull/134
 
 ## 4.3.1
 
-- Fixed errors when using shorthand selectors by Felix Bruns (@fxb) https://github.com/madyankin/postcss-modules/pull/130
+-   Fixed errors when using shorthand selectors by Felix Bruns (@fxb) https://github.com/madyankin/postcss-modules/pull/130
 
 ## 4.3.0
 
-- Updated the `generic-names` dependency to reduce packages size by Bogdan Chadkin (@TrySound) https://github.com/madyankin/postcss-modules/pull/129
+-   Updated the `generic-names` dependency to reduce packages size by Bogdan Chadkin (@TrySound) https://github.com/madyankin/postcss-modules/pull/129
 
 ## 4.2.2
 
-- Fix the build
+-   Fix the build
 
 ## 4.2.1
 
-- Fixed the `resolve` option behaviour by @kamilic https://github.com/madyankin/postcss-modules/pull/127
+-   Fixed the `resolve` option behaviour by @kamilic https://github.com/madyankin/postcss-modules/pull/127
 
 ## 4.2.0
 
-- Added the `resolve` option to configure lookup paths for composes/from by @kamilic https://github.com/madyankin/postcss-modules/pull/126
+-   Added the `resolve` option to configure lookup paths for composes/from by @kamilic https://github.com/madyankin/postcss-modules/pull/126
 
 ## 4.1.3
 
-- Fixed package contents
+-   Fixed package contents
 
 ## 4.1.1
 
-- Fixed TypeScript typings by Shuman Lim (@origin-master) https://github.com/madyankin/postcss-modules/pull/124
+-   Fixed TypeScript typings by Shuman Lim (@origin-master) https://github.com/madyankin/postcss-modules/pull/124
 
 ## 4.1.0
 
-- Added TypeScript typings by Shuman Lim (@origin-master) https://github.com/madyankin/postcss-modules/pull/123
+-   Added TypeScript typings by Shuman Lim (@origin-master) https://github.com/madyankin/postcss-modules/pull/123
 
 ## 4.0.0
 
-- Upgraded to PostCSS 8 by Evan You (@yyx990803) https://github.com/css-modules/postcss-modules/pull/114
+-   Upgraded to PostCSS 8 by Evan You (@yyx990803) https://github.com/css-modules/postcss-modules/pull/114
 
 ## 3.2.2
 
 ### Fixed
 
-- Fixed user plugins order by Tom Jenkinson (@tjenkinson) https://github.com/css-modules/postcss-modules/pull/112
+-   Fixed user plugins order by Tom Jenkinson (@tjenkinson) https://github.com/css-modules/postcss-modules/pull/112
 
 ## 3.2.1
 
 ### Fixed
 
-- Fixed an issue when some plugins were running multiple times by Tom Jenkinson (@tjenkinson) https://github.com/css-modules/postcss-modules/pull/111
+-   Fixed an issue when some plugins were running multiple times by Tom Jenkinson (@tjenkinson) https://github.com/css-modules/postcss-modules/pull/111
 
 ## 3.2.0
 
 ### Changed
 
-- [`localsConvention` option] now supports a custom function `(originalClassName: string, generatedClassName: string, inputFile: string) => className: string` by Gregory Waxman (@Akkuma) https://github.com/css-modules/postcss-modules/pull/109
+-   [`localsConvention` option] now supports a custom function `(originalClassName: string, generatedClassName: string, inputFile: string) => className: string` by Gregory Waxman (@Akkuma) https://github.com/css-modules/postcss-modules/pull/109
 
 ## 3.1.0
 
 ### Added
 
-- Added `exportGlobals` option
+-   Added `exportGlobals` option
 
 ## 3.0.0
 
 ### Changed
 
-- Dropped `css-modules-loader-core` dependency
-- [Upgraded all the dependencies](https://github.com/css-modules/postcss-modules/pull/108)
+-   Dropped `css-modules-loader-core` dependency
+-   [Upgraded all the dependencies](https://github.com/css-modules/postcss-modules/pull/108)
 
 ### Breaking changes
 
-- Dropped support for unsupported Node versions. Supported versions are 10, 12 and 14+ https://nodejs.org/en/about/releases/
+-   Dropped support for unsupported Node versions. Supported versions are 10, 12 and 14+ https://nodejs.org/en/about/releases/
 
 ## 2.0.0
 
 ### Added
 
-- [`localsConvention` option](https://github.com/css-modules/postcss-modules#localsconvention) by Hamza Mihai Daniel (@allocenx) <https://github.com/css-modules/postcss-modules/pull/103>, <https://github.com/css-modules/postcss-modules/issues/93>
+-   [`localsConvention` option](https://github.com/css-modules/postcss-modules#localsconvention) by Hamza Mihai Daniel (@allocenx) <https://github.com/css-modules/postcss-modules/pull/103>, <https://github.com/css-modules/postcss-modules/issues/93>
 
 ### Breaking changes
 
-- `camelCase` camelCase removed, use the [`localsConvention` option](https://github.com/css-modules/postcss-modules#localsconvention) instead.
+-   `camelCase` camelCase removed, use the [`localsConvention` option](https://github.com/css-modules/postcss-modules#localsconvention) instead.
 
 ## 1.5.0
 
-- Added `hashPrefix` option by Jesse Thomson (@jessethomson) <https://github.com/css-modules/postcss-modules/pull/98>
+-   Added `hashPrefix` option by Jesse Thomson (@jessethomson) <https://github.com/css-modules/postcss-modules/pull/98>
 
 ## 1.4.1
 
-- Rebublished the previous release. Sorry :(
+-   Rebublished the previous release. Sorry :(
 
 ## 1.4.0
 
-- Added export for other plugins by Evilebot Tnawi (@evilebottnawi) <https://github.com/css-modules/postcss-modules/pull/88>, <https://github.com/css-modules/postcss-modules/issues/29>
+-   Added export for other plugins by Evilebot Tnawi (@evilebottnawi) <https://github.com/css-modules/postcss-modules/pull/88>, <https://github.com/css-modules/postcss-modules/issues/29>
 
 ## 1.3.1
 
-- Move dev tools to devDependecies by Anton Khlynovskiy (@ubzey) <https://github.com/css-modules/postcss-modules/pull/85>
+-   Move dev tools to devDependecies by Anton Khlynovskiy (@ubzey) <https://github.com/css-modules/postcss-modules/pull/85>
 
 ## 1.3.0
 
-- Updated dependecies
-- Added prettier to format code
+-   Updated dependecies
+-   Added prettier to format code
 
 ## 1.2.0
 
-- Added option to transform classes to camelCase by Igor Ribeiro (@igor-ribeiro) <https://github.com/css-modules/postcss-modules/pull/82>
+-   Added option to transform classes to camelCase by Igor Ribeiro (@igor-ribeiro) <https://github.com/css-modules/postcss-modules/pull/82>
 
 ## 1.1.0
 
-- Added ability to transmit outputFileName into getJSON by @lutien <https://github.com/css-modules/postcss-modules/pull/72>
+-   Added ability to transmit outputFileName into getJSON by @lutien <https://github.com/css-modules/postcss-modules/pull/72>
 
 ## 1.0.0
 
-- Dropped support for Node < 6
-- Updated dependencies
+-   Dropped support for Node < 6
+-   Updated dependencies
 
 ## 0.8.0
 
-- Updated PostCSS to 6 by Alexey Litvinov (@sullenor) <https://github.com/css-modules/postcss-modules/pull/65>
+-   Updated PostCSS to 6 by Alexey Litvinov (@sullenor) <https://github.com/css-modules/postcss-modules/pull/65>
 
 ## 0.7.1
 
-- Allowed empty string as opts.root by Sharon Rolel (@Mosho1) <https://github.com/css-modules/postcss-modules/pull/56>
+-   Allowed empty string as opts.root by Sharon Rolel (@Mosho1) <https://github.com/css-modules/postcss-modules/pull/56>
 
 ## 0.7.0
 
-- Allow async getJSON by Philipp A. (@flying-sheep) <https://github.com/css-modules/postcss-modules/pull/59>
+-   Allow async getJSON by Philipp A. (@flying-sheep) <https://github.com/css-modules/postcss-modules/pull/59>
 
 ## 0.6.4
 
-- Added the `root` option to pass the root path by Sharon Rolel (@Mosho1) (<https://github.com/css-modules/postcss-modules/pull/55>)
+-   Added the `root` option to pass the root path by Sharon Rolel (@Mosho1) (<https://github.com/css-modules/postcss-modules/pull/55>)
 
 ## 0.6.3
 
-- Fixed regression in `isValidBehaviour` function (<https://github.com/css-modules/postcss-modules/issues/53>)
+-   Fixed regression in `isValidBehaviour` function (<https://github.com/css-modules/postcss-modules/issues/53>)
 
 ## 0.6.2
 
-- Refactored `getDefaultPluginsList` function
+-   Refactored `getDefaultPluginsList` function
 
 ## 0.6.1
 
-- Fixed `generateScopedName` bug with multiple postcss-modules instances (<https://github.com/css-modules/postcss-modules/issues/37>)
+-   Fixed `generateScopedName` bug with multiple postcss-modules instances (<https://github.com/css-modules/postcss-modules/issues/37>)
 
 ## 0.6.0
 
-- Added `globalModulePaths` option (Thanks to @pospi).
-- Refactored all the things.
+-   Added `globalModulePaths` option (Thanks to @pospi).
+-   Refactored all the things.
 
 ## 0.5.2
 
-- Updated dependencies
+-   Updated dependencies
 
 ## 0.5.1
 
-- Fixed sorting for composed dependencies by Josh Johnston (@joshwnj) (<https://github.com/css-modules/postcss-modules/issues/38>)
+-   Fixed sorting for composed dependencies by Josh Johnston (@joshwnj) (<https://github.com/css-modules/postcss-modules/issues/38>)
 
 ## 0.5.0
 
-- Added `scopeBehaviour` option (<https://github.com/css-modules/postcss-modules/issues/22>)
-- Added ability to pass a string to `generateScopedName` (<https://github.com/css-modules/postcss-modules/issues/21>)
-- Updated dependencies
+-   Added `scopeBehaviour` option (<https://github.com/css-modules/postcss-modules/issues/22>)
+-   Added ability to pass a string to `generateScopedName` (<https://github.com/css-modules/postcss-modules/issues/21>)
+-   Updated dependencies
 
 ## 0.4.1
 
-- Fixed processing errors capturing by Boris Serdiuk (@just-boris)
+-   Fixed processing errors capturing by Boris Serdiuk (@just-boris)
 
 ## 0.4.0
 
-- Added support for custom loaders by Björn Brauer (@ZauberNerd)
+-   Added support for custom loaders by Björn Brauer (@ZauberNerd)
 
 ## 0.3.0
 
-- Fixed processing for imported CSS
-- Added default callback for saving exported JSON
+-   Fixed processing for imported CSS
+-   Added default callback for saving exported JSON
 
 ## 0.2.0
 
-- Fixed JSON export with shallow imports (<https://github.com/outpunk/postcss-modules/issues/12>)
-- Fixed lookup paths (<https://github.com/outpunk/postcss-modules/issues/13>)
-- Fixed imports overriding (<https://github.com/outpunk/postcss-modules/issues/15>)
-- Global refactoring under the hood
+-   Fixed JSON export with shallow imports (<https://github.com/outpunk/postcss-modules/issues/12>)
+-   Fixed lookup paths (<https://github.com/outpunk/postcss-modules/issues/13>)
+-   Fixed imports overriding (<https://github.com/outpunk/postcss-modules/issues/15>)
+-   Global refactoring under the hood
 
 ## 0.1.3
 

README.md

@@ -211,8 +211,9 @@ You can rewrite paths for `composes/from` by using the `resolve` option.
 It's useful when you need to resolve custom path alias.
 
 Parameters:
-- `file` — a module we want to resolve
-- `importer` — the file that imports the module we want to resolve
+
+-   `file` — a module we want to resolve
+-   `importer` — the file that imports the module we want to resolve
 
 Return value: `string | null | Promise<string | null>`
 

src/css-loader-core/loader.js

@@ -20,7 +20,7 @@ class Core {
 		});
 
 		return {
-			injectableSource: result.css,
+			injectableSource: result,
 			exportTokens: parser.exportTokens,
 		};
 	}
@@ -129,8 +129,7 @@ export default class FileSystemLoader {
 				}
 				written.add(filename);
 
-				return sources[filename];
-			})
-			.join("");
+				return sources[filename].root
+			}).filter(Boolean);
 	}
 }