Feat: add support "lineNumbers" option

README.md

@@ -145,6 +145,16 @@ module.exports = {
                 resolveURL: true,
                 // resolveURL: { nocheck: true },
 
+                /**
+                 * Emits comments in the generated CSS indicating the corresponding Stylus line.
+                 *
+                 * @see https://stylus-lang.com/docs/executable.html
+                 *
+                 * @type {boolean}
+                 * @default false
+                 */
+                lineNumbers: true,
+
                 /**
                  * Move @import and @charset to the top.
                  *

src/index.js

@@ -45,6 +45,10 @@ export default async function stylusLoader(source) {
     styl.set('hoist atrules', true);
   }
 
+  if (stylusOptions.lineNumbers) {
+    styl.set('linenos', true);
+  }
+
   if (stylusOptions.disableCache) {
     styl.set('cache', false);
   }

test/__snapshots__/loader.test.js.snap

@@ -715,6 +715,10 @@ exports[`loader should work "include" option: errors 1`] = `Array []`;
 
 exports[`loader should work "include" option: warnings 1`] = `Array []`;
 
+exports[`loader should work "lineNumbers" option: errors 1`] = `Array []`;
+
+exports[`loader should work "lineNumbers" option: warnings 1`] = `Array []`;
+
 exports[`loader should work "nib": css 1`] = `
 "body {
   background: -webkit-linear-gradient(top, #fff, #000);
@@ -735,6 +739,23 @@ exports[`loader should work "nib": errors 1`] = `Array []`;
 
 exports[`loader should work "nib": warnings 1`] = `Array []`;
 
+exports[`loader should work "prefix" option: css 1`] = `
+".prefix-foo {
+  border: 5px;
+}
+.prefix-baz {
+  border: 15px;
+}
+.prefix-bar {
+  border: 25px;
+}
+"
+`;
+
+exports[`loader should work "prefix" option: errors 1`] = `Array []`;
+
+exports[`loader should work "prefix" option: warnings 1`] = `Array []`;
+
 exports[`loader should work "use" option as Array<string>: css 1`] = `
 "body {
   font: 12px Helvetica, Arial, sans-serif;

test/fixtures/prefix.styl

@@ -0,0 +1,11 @@
+.foo {
+  border: 5px;
+}
+
+.baz {
+  border: 15px;
+}
+
+.bar {
+  border: 25px;
+}

test/helpers/getCodeFromStylus.js

@@ -111,10 +111,6 @@ async function getCodeFromStylus(testId, options = {}) {
         : `${options.additionalData}\n${data}`;
   }
 
-  if (typeof stylusOptions.hoistAtrules === 'boolean') {
-    stylusOptions['hoist atrules'] = stylusOptions.hoistAtrules;
-  }
-
   const mergedOptions = {
     ...defaultOptions,
     ...stylusOptions,
@@ -124,6 +120,14 @@ async function getCodeFromStylus(testId, options = {}) {
 
   styl.set('filename', pathToFile);
 
+  if (stylusOptions.hoistAtrules) {
+    styl.set('hoist atrules', true);
+  }
+
+  if (stylusOptions.lineNumbers) {
+    styl.set('linenos', true);
+  }
+
   if (mergedOptions.shouldUseWebpackImporter) {
     styl.set('Evaluator', evaluator());
   }

test/loader.test.js

@@ -1284,6 +1284,48 @@ describe('loader', () => {
     expect(getErrors(stats)).toMatchSnapshot('errors');
   });
 
+  it('should work "prefix" option', async () => {
+    const testId = './prefix.styl';
+    const compiler = getCompiler(testId, {
+      stylusOptions: {
+        prefix: 'prefix-',
+      },
+    });
+    const stats = await compile(compiler);
+    const codeFromBundle = getCodeFromBundle(stats, compiler);
+    const codeFromStylus = await getCodeFromStylus(testId, {
+      stylusOptions: {
+        prefix: 'prefix-',
+      },
+    });
+
+    expect(codeFromBundle.css).toBe(codeFromStylus.css);
+    expect(codeFromBundle.css).toMatchSnapshot('css');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
+
+  it('should work "lineNumbers" option', async () => {
+    const testId = './basic.styl';
+    const compiler = getCompiler(testId, {
+      stylusOptions: {
+        lineNumbers: true,
+      },
+    });
+    const stats = await compile(compiler);
+    const codeFromBundle = getCodeFromBundle(stats, compiler);
+    const codeFromStylus = await getCodeFromStylus(testId, {
+      stylusOptions: {
+        lineNumbers: true,
+      },
+    });
+
+    expect(codeFromBundle.css).toBe(codeFromStylus.css);
+    // expect(codeFromBundle.css).toMatchSnapshot('css');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
+
   it('should use .json file', async () => {
     const testId = './json/index.styl';
     const compiler = getCompiler(testId, {