diff --git a/test/__snapshots__/exportType.test.js.snap b/test/__snapshots__/exportType.test.js.snap
index 22f0a03b..efc53073 100644
--- a/test/__snapshots__/exportType.test.js.snap
+++ b/test/__snapshots__/exportType.test.js.snap
@@ -2490,6 +2490,8 @@ exports[`'exportType' option should work with 'string' value and CSS modules: wa
 
 exports[`'exportType' option should work with 'string' value and generate source maps: errors 1`] = `Array []`;
 
+exports[`'exportType' option should work with 'string' value and generate source maps: errors 2`] = `Array []`;
+
 exports[`'exportType' option should work with 'string' value and generate source maps: module 1`] = `
 "// Imports
 import ___CSS_LOADER_API_SOURCEMAP_IMPORT___ from \\"../../src/runtime/sourceMaps.js\\";
@@ -2508,6 +2510,19 @@ export default ___CSS_LOADER_EXPORT___.toString();
 `;
 
 exports[`'exportType' option should work with 'string' value and generate source maps: result 1`] = `
+"* {
+  color: red;
+}
+
+* {
+  color: red;
+}
+/*# sourceURL=webpack://./_partial.scss */
+/*# sourceURL=webpack://./basic-css-style-sheet.scss */
+/*# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIndlYnBhY2s6Ly8uL19wYXJ0aWFsLnNjc3MiLCJ3ZWJwYWNrOi8vLi9iYXNpYy1jc3Mtc3R5bGUtc2hlZXQuc2NzcyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQTtFQUNFLFVBQUE7QUNDRjs7QUFBQTtFQUNFLFVBQUE7QUFHRiIsInNvdXJjZXNDb250ZW50IjpbIioge1xuICBjb2xvcjogcmVkXG59XG4iLCJAdXNlICdfcGFydGlhbCc7XG5cbioge1xuICBjb2xvcjogcmVkXG59XG4iXSwic291cmNlUm9vdCI6IiJ9 */"
+`;
+
+exports[`'exportType' option should work with 'string' value and generate source maps: result 2`] = `
 "@charset \\"UTF-8\\";
 
 /* Comment */
@@ -2648,8 +2663,22 @@ a[href=\\"\\" i] {
 /*# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIndlYnBhY2s6Ly8uL2Jhc2ljLWNzcy1zdHlsZS1zaGVldC5jc3MiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsZ0JBQWdCOztBQUVoQixZQUFZOztBQUVaO0VBQ0UsVUFBVTtFQUNWLG1EQUFnQztBQUNsQzs7QUFFQTtFQUNFLG1EQUFnQztBQUNsQzs7QUFFQTtFQUNFLFVBQVU7RUFDVixVQUFVO0FBQ1o7O0FBRUEsU0FBUyxRQUFRLEVBQUU7O0FBRW5CLE1BQU07O0FBRU4sU0FBUyxRQUFRLEVBQUU7O0FBRW5CLFNBQVMsaUJBQWlCOztBQUUxQjtFQUNFO0lBQ0UsMkJBQTJCO0VBQzdCO0FBQ0Y7O0FBRUE7RUFDRSxnQkFBZ0I7RUFDaEIscUJBQXFCO0VBQ3JCLHNCQUFzQjtFQUN0QiwwQkFBMEI7RUFDMUIsNEJBQTRCO0FBQzlCOztBQUVBLE9BQU87QUFDUCxRQUFROztBQUVSLFNBQVM7O0FBRVQ7RUFDRSxhQUFhO0VBQ2IsZUFBZTtBQUNqQjtBQUNBO0VBQ0UsdUJBQXVCO0FBQ3pCO0FBQ0E7RUFDRSx1QkFBdUI7QUFDekI7QUFDQTtFQUNFLG1CQUFtQjtBQUNyQjtBQUNBO0VBQ0UscUJBQXFCO0FBQ3ZCOztBQUVBLGFBQWE7O0FBRWIsWUFBWTs7QUFFWixRQUFROztBQUVSO0VBQ0UsbUJBQW1CLEVBQUUsMkJBQTJCO0FBQ2xEOztBQUVBO0VBQ0UsZ0JBQWdCO0FBQ2xCOztBQUVBO0VBQ0UsZ0JBQWdCO0FBQ2xCOztBQUVBLElBQUk7O0FBRUosV0FBVyxFQUFFLHNDQUFzQztBQUNuRCxZQUFZLEVBQUUseUNBQXlDO0FBQ3ZELFlBQVksRUFBRSwyQ0FBMkM7QUFDekQsVUFBVSxFQUFFLDBDQUEwQztBQUN0RCxJQUFJLEVBQUUsb0NBQW9DOztBQUUxQztFQUNFLHFCQUFxQjtFQUNyQjs7Ozs7Ozs7OztHQVVDO0FBQ0g7O0FBRUE7RUFDRSxtQkFBbUI7RUFDbkIsb0JBQW9CO0VBQ3BCLG9CQUFvQjtFQUNwQixtQkFBbUI7RUFDbkIsaUJBQWlCO0VBQ2pCLHdCQUF3QjtBQUMxQjs7QUFFQTtFQUNFLGFBQWE7QUFDZjs7QUFFQTtFQUNFLG1EQUFxMUI7QUFDdjFCOztBQUVBO0VBQ0UsVUFBVTtBQUNaOztBQUVBO0VBQ0UsVUFBVTtBQUNaOztBQUVBO0VBQ0UsV0FBVztBQUNiOztBQUVBO0VBQ0UsV0FBVztBQUNiIiwic291cmNlc0NvbnRlbnQiOlsiQGNoYXJzZXQgXCJVVEYtOFwiO1xuXG4vKiBDb21tZW50ICovXG5cbi5jbGFzcyB7XG4gIGNvbG9yOiByZWQ7XG4gIGJhY2tncm91bmQ6IHVybChcIi4vdXJsL2ltZy5wbmdcIik7XG59XG5cbi5jbGFzcy1kdXBsaWNhdGUtdXJsIHtcbiAgYmFja2dyb3VuZDogdXJsKFwiLi91cmwvaW1nLnBuZ1wiKTtcbn1cblxuOnJvb3Qge1xuICAtLWZvbzogMXB4O1xuICAtLWJhcjogMnB4O1xufVxuXG4uY2xhc3MgeyBhOiBiIGMgZDsgfVxuXG4udHdvIHt9XG5cbi51LW1cXCsgeyBhOiBiIGMgZDsgfVxuXG4uY2xhc3MgeyBjb250ZW50OiBcIlxcRjEwQ1wiIH1cblxuQG1lZGlhIG9ubHkgc2NyZWVuIGFuZCAobWF4LXdpZHRoOiA2MDBweCkge1xuICBib2R5IHtcbiAgICBiYWNrZ3JvdW5kLWNvbG9yOiBsaWdodGJsdWU7XG4gIH1cbn1cblxuLmNsYXNzIHtcbiAgY29udGVudDogXCJcXDIxOTNcIjtcbiAgY29udGVudDogXCJcXDIxOTNcXDIxOTNcIjtcbiAgY29udGVudDogXCJcXDIxOTMgXFwyMTkzXCI7XG4gIGNvbnRlbnQ6IFwiXFwyMTkzXFwyMTkzXFwyMTkzXCI7XG4gIGNvbnRlbnQ6IFwiXFwyMTkzIFxcMjE5MyBcXDIxOTNcIjtcbn1cblxuLi10b3Age31cbi5cXC10b3Age31cblxuI1xcI3Rlc3Qge31cblxuLmdyaWQge1xuICBkaXNwbGF5OiBmbGV4O1xuICBmbGV4LXdyYXA6IHdyYXA7XG59XG4uZ3JpZC5cXC10b3Age1xuICBhbGlnbi1pdGVtczogZmxleC1zdGFydDtcbn1cbi5ncmlkLi10b3Age1xuICBhbGlnbi1pdGVtczogZmxleC1zdGFydDtcbn1cbi5ncmlkLlxcLW1pZGRsZSB7XG4gIGFsaWduLWl0ZW1zOiBjZW50ZXI7XG59XG4uZ3JpZC5cXC1ib3R0b20ge1xuICBhbGlnbi1pdGVtczogZmxleC1lbmQ7XG59XG5cbi51LW1cXDAwMDAyYiB7fVxuXG4udS1tMDAwMDJiIHt9XG5cbiN1LW1cXCsge31cblxuYm9keSB7XG4gIGZvbnQtZmFtaWx5OiAnw6XCvsKuw6jCvcKvw6nCm8KFw6nCu8KRJzsgLyogc29tZSBjaGluZXNlIGZvbnQgbmFtZSAqL1xufVxuXG4ubXlTdHlsZSB7XG4gIGNvbnRlbnQ6ICdcXGU5MDEnO1xufVxuXG4ubXlTdHlsZSB7XG4gIGNvbnRlbnQ6ICdcXEU5MDEnO1xufVxuXG4uw6LCmcKrIHt9XG5cbi5cXDNBIFxcYFxcKCB7fSAvKiBtYXRjaGVzIGVsZW1lbnRzIHdpdGggY2xhc3M9XCI6YChcIiAqL1xuLlxcMzEgYTJiM2Mge30gLyogbWF0Y2hlcyBlbGVtZW50cyB3aXRoIGNsYXNzPVwiMWEyYjNjXCIgKi9cbiNcXCNmYWtlLWlkIHt9IC8qIG1hdGNoZXMgdGhlIGVsZW1lbnQgd2l0aCBpZD1cIiNmYWtlLWlkXCIgKi9cbiMtYS1iLWMtIHt9IC8qIG1hdGNoZXMgdGhlIGVsZW1lbnQgd2l0aCBpZD1cIi1hLWItYy1cIiAqL1xuI8OCwqkge30gLyogbWF0Y2hlcyB0aGUgZWxlbWVudCB3aXRoIGlkPVwiw4LCqVwiICovXG5cbjpyb290IHtcbiAgLS10aXRsZS1hbGlnbjogY2VudGVyO1xuICAtLXNyLW9ubHk6IHtcbiAgICBwb3NpdGlvbjogYWJzb2x1dGU7XG4gICAgd2lkdGg6IDFweDtcbiAgICBoZWlnaHQ6IDFweDtcbiAgICBwYWRkaW5nOiAwO1xuICAgIG92ZXJmbG93OiBoaWRkZW47XG4gICAgY2xpcDogcmVjdCgwLDAsMCwwKTtcbiAgICB3aGl0ZS1zcGFjZTogbm93cmFwO1xuICAgIGNsaXAtcGF0aDogaW5zZXQoNTAlKTtcbiAgICBib3JkZXI6IDA7XG4gIH07XG59XG5cbi50ZXN0IHtcbiAgY29udGVudDogXCJcXDIwMTRcXEEwXCI7XG4gIGNvbnRlbnQ6IFwiXFwyMDE0IFxcQTBcIjtcbiAgY29udGVudDogXCJcXEEwIFxcMjAxNFwiO1xuICBjb250ZW50OiBcIlxcQTBcXDIwMTRcIjtcbiAgbWFyZ2luLXRvcDogMXB4XFw5O1xuICBiYWNrZ3JvdW5kLWNvbG9yOiAjMDAwXFw5O1xufVxuXG4ubGlnaHQub24gLmJ1bGI6YmVmb3Jle1xuICBjb250ZW50OiAnw7DCn8KSwqEnO1xufVxuXG4uYmFzZTY0IHtcbiAgYmFja2dyb3VuZDogdXJsKGRhdGE6aW1nL2pwZztiYXNlNjQsaVZCT1J3MEtHZ29BQUFBTlNVaEVVZ0FBQUJnQUFBQVlDQVlBQUFEZ2R6MzRBQUFBQVhOU1IwSUFyczRjNlFBQUFoeEpSRUZVU0EzdGs3MXJVMUVZeG5NVEVvSlVrb3dXd2RKMmFrRUhCZkdqQ2lJRjZaeWxWVUtTbTJUcVpMR0krQS9vSXUyVVhtOEM0bEF5RjRTV2ppMHRkRkxvMUVvN1ZOMFNhQkVoSDdlL056MG5QVGZHT2ppYUN5ZlBjNTczNHpsZkNRVDZYLzhFL3ZVRXJMODFLQmFMOXkzTFNudWVkNVBjSVRqVU93UjNnc0ZnMmJidGpZdDYvTkdnWEM0UDFldDFsMmFQTG1wQWJEMFNpZGpwZFBxZ1YxNVBBOWQxN3pRYWpVOFV4SFFSSy80RzM1UTVwdmVBSzhMbEkxWmpQTW5sY2x0bnl2bnZid2FPNDF4dnRWcXk3WUh6dE1BQ3E1eG5sYjlFWTNkUmR2Y0dvMWtqNXdSK3QxQW9mREcwZ00rQTg3NUU4RE5qUkNleHNyVjhQajlacVZRaXRWcnRxZWp4ZVB4ak1wbXNzNWhWVEI0YnVYdk1iMkR5VTJ0QlRSUytCanZObFZZVXBQbDdpdVZPM0dxMXVvUXgxRnRTT1cxZ1BncDVaV3JkQnRObVVEZ3Y1YXNneFE4RjFhZjV2aFkwWWp5anVXQzN3VHN6S0p6N0dCT2tjRmxRZlcyT05xNEZqV2krSGo2RFJDS3hRT0syVGxZNHg5MkV1WWQ1ZHZNQWJZSXpmaWthdTNwdTV0SjhLeGFMTGZvMGN5S2NpN3RLNFRaalVNY29YQW1Id3psZTBRL1JhQzVQMUdGTXlWeDlSOUZvOUhZcWxUclNncUR2RmVsQXFWUWE1aG11TVIvV0d0akFhQmRqd0JvRFEwWnNud1ZNWmpLWjluMFplbThEU2VEUGRyblpiTDZGMmwzTk92VVlOWms0b1ZEb1JUYWJQZTRFRE5KekIwWmNqQVl4ZW9aMmkzRk54UTdCSFl3L2NCL2ZsZGFILy9VRVRnSEhPOFM0NEtiZlhnQUFBQUJKUlU1RXJrSmdnZz09KTtcbn1cblxuYVtocmVmPScnXSB7XG4gIGNvbG9yOiByZWQ7XG59XG5cbmFbaHJlZj0nJyBpXSB7XG4gIGNvbG9yOiByZWQ7XG59XG5cbmFbaHJlZj1cIlwiXSB7XG4gIGNvbG9yOiBibHVlO1xufVxuXG5hW2hyZWY9XCJcIiBpXSB7XG4gIGNvbG9yOiBibHVlO1xufVxuIl0sInNvdXJjZVJvb3QiOiIifQ== */"
 `;
 
+exports[`'exportType' option should work with 'string' value and generate source maps: string 1`] = `
+"// Imports
+import ___CSS_LOADER_API_SOURCEMAP_IMPORT___ from \\"../../src/runtime/sourceMaps.js\\";
+import ___CSS_LOADER_API_IMPORT___ from \\"../../src/runtime/api.js\\";
+var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_SOURCEMAP_IMPORT___);
+// Module
+___CSS_LOADER_EXPORT___.push([module.id, \\"* {\\\\n  color: red;\\\\n}\\\\n\\\\n* {\\\\n  color: red;\\\\n}\\", \\"\\",{\\"version\\":3,\\"sources\\":[\\"webpack://./_partial.scss\\",\\"webpack://./basic-css-style-sheet.scss\\"],\\"names\\":[],\\"mappings\\":\\"AAAA;EACE,UAAA;ACCF;;AAAA;EACE,UAAA;AAGF\\",\\"sourcesContent\\":[\\"* {\\\\n  color: red\\\\n}\\\\n\\",\\"@use '_partial';\\\\n\\\\n* {\\\\n  color: red\\\\n}\\\\n\\"],\\"sourceRoot\\":\\"\\"}]);
+// Exports
+export default ___CSS_LOADER_EXPORT___.toString();
+"
+`;
+
 exports[`'exportType' option should work with 'string' value and generate source maps: warnings 1`] = `Array []`;
 
+exports[`'exportType' option should work with 'string' value and generate source maps: warnings 2`] = `Array []`;
+
 exports[`'exportType' option should work with 'string' value: errors 1`] = `Array []`;
 
 exports[`'exportType' option should work with 'string' value: module 1`] = `
diff --git a/test/exportType.test.js b/test/exportType.test.js
index cd726b8f..54fa7941 100644
--- a/test/exportType.test.js
+++ b/test/exportType.test.js
@@ -52,6 +52,51 @@ describe("'exportType' option", () => {
     expect(getErrors(stats)).toMatchSnapshot("errors");
   });
 
+  it("should work with 'string' value and generate source maps", async () => {
+    const compiler = getCompiler(
+      "./basic-string-scss.js",
+      {},
+      {
+        module: {
+          rules: [
+            {
+              test: /\.s[ca]ss$/i,
+              rules: [
+                {
+                  loader: path.resolve(__dirname, "../src"),
+                  options: {
+                    sourceMap: true,
+                    exportType: "string",
+                  },
+                },
+                {
+                  loader: "sass-loader",
+                  options: {
+                    sourceMap: true,
+                    // eslint-disable-next-line global-require
+                    implementation: require("sass"),
+                  },
+                },
+              ],
+            },
+          ],
+        },
+      }
+    );
+    const stats = await compile(compiler);
+
+    expect(
+      getModuleSource("./basic-css-style-sheet.scss", stats)
+    ).toMatchSnapshot("string");
+
+    expect(getExecutedCode("main.bundle.js", compiler, stats)).toMatchSnapshot(
+      "result"
+    );
+
+    expect(getWarnings(stats)).toMatchSnapshot("warnings");
+    expect(getErrors(stats)).toMatchSnapshot("errors");
+  });
+
   it("should work with 'string' value and generate source maps", async () => {
     const compiler = getCompiler("./basic-string.js", {
       exportType: "string",
diff --git a/test/fixtures/_partial.scss b/test/fixtures/_partial.scss
new file mode 100644
index 00000000..3e4ddc47
--- /dev/null
+++ b/test/fixtures/_partial.scss
@@ -0,0 +1,3 @@
+* {
+  color: red
+}
diff --git a/test/fixtures/basic-css-style-sheet.scss b/test/fixtures/basic-css-style-sheet.scss
new file mode 100644
index 00000000..7db370bd
--- /dev/null
+++ b/test/fixtures/basic-css-style-sheet.scss
@@ -0,0 +1,5 @@
+@use '_partial';
+
+* {
+  color: red
+}
diff --git a/test/fixtures/basic-string-scss.js b/test/fixtures/basic-string-scss.js
new file mode 100644
index 00000000..fd89afe7
--- /dev/null
+++ b/test/fixtures/basic-string-scss.js
@@ -0,0 +1,5 @@
+import css from './basic-css-style-sheet.scss';
+
+__export__ = css;
+
+export default css;