fix: ignore watch for remove URLs

.gitignore

@@ -24,6 +24,7 @@ yarn-debug.log*
 /test/fixtures/css
 /test/fixtures/generated-1.less
 /test/fixtures/generated-2.less
+/test/fixtures/generated-3.less
 /test/output
 .DS_Store
 Thumbs.db

src/index.js

@@ -4,7 +4,11 @@ import { getOptions } from 'loader-utils';
 import validateOptions from 'schema-utils';
 
 import schema from './options.json';
-import { getLessOptions, getLessImplementation } from './utils';
+import {
+  getLessOptions,
+  getLessImplementation,
+  isUnsupportedUrl,
+} from './utils';
 import LessError from './LessError';
 
 function lessLoader(source) {
@@ -38,6 +42,10 @@ function lessLoader(source) {
     .render(data, lessOptions)
     .then(({ css, map, imports }) => {
       imports.forEach((item) => {
+        if (isUnsupportedUrl(item)) {
+          return;
+        }
+
         // `less` return forward slashes on windows when `webpack` resolver return an absolute windows path in `WebpackFileManager`
         // Ref: https://github.com/webpack-contrib/less-loader/issues/357
         this.addDependency(path.normalize(item));

src/utils.js

@@ -1,3 +1,5 @@
+import path from 'path';
+
 import less from 'less';
 import clone from 'clone';
 
@@ -126,7 +128,7 @@ function createWebpackLessPlugin(loaderContext) {
         return super.loadFile(result, ...args);
       }
 
-      loaderContext.addDependency(result.filename);
+      loaderContext.addDependency(path.normalize(result.filename));
 
       return result;
     }
@@ -188,4 +190,15 @@ function getLessImplementation(implementation) {
   return less;
 }
 
-export { getLessImplementation, getLessOptions };
+function isUnsupportedUrl(url) {
+  // Is Windows paths `c:\`
+  if (/^[a-zA-Z]:\\/.test(url)) {
+    return false;
+  }
+
+  // Scheme: https://tools.ietf.org/html/rfc3986#section-3.1
+  // Absolute URL: https://tools.ietf.org/html/rfc3986#section-4.3
+  return /^[a-zA-Z][a-zA-Z\d+\-.]*:/.test(url);
+}
+
+export { getLessImplementation, getLessOptions, isUnsupportedUrl };

test/__snapshots__/loader.test.js.snap

@@ -25,6 +25,23 @@ exports[`loader should add all resolved imports as dependencies: errors 1`] = `A
 
 exports[`loader should add all resolved imports as dependencies: warnings 1`] = `Array []`;
 
+exports[`loader should add path to dependencies: css 1`] = `
+".box {
+  color: #fe33ac;
+  border-color: #fdcdea;
+  background: url(box.png);
+}
+.box div {
+  -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
+  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
+}
+"
+`;
+
+exports[`loader should add path to dependencies: errors 1`] = `Array []`;
+
+exports[`loader should add path to dependencies: warnings 1`] = `Array []`;
+
 exports[`loader should allow to import non-less files: css 1`] = `
 ".some-file {
   background: hotpink;
@@ -135,6 +152,38 @@ exports[`loader should install plugins: errors 1`] = `Array []`;
 
 exports[`loader should install plugins: warnings 1`] = `Array []`;
 
+exports[`loader should not add to dependencies imports with URLs: css 1`] = `
+"@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(http://fonts.gstatic.com/s/roboto/v20/KFOlCnqEu92Fr1MmSU5fBBc9.ttf) format('truetype');
+}
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v20/KFOlCnqEu92Fr1MmSU5fBBc9.ttf) format('truetype');
+}
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v20/KFOmCnqEu92Fr1Mu4mxP.ttf) format('truetype');
+}
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v20/KFOlCnqEu92Fr1MmEU9fBBc9.ttf) format('truetype');
+}
+"
+`;
+
+exports[`loader should not add to dependencies imports with URLs: errors 1`] = `Array []`;
+
+exports[`loader should not add to dependencies imports with URLs: warnings 1`] = `Array []`;
+
 exports[`loader should not alter the original options object: errors 1`] = `Array []`;
 
 exports[`loader should not alter the original options object: warnings 1`] = `Array []`;

test/fixtures/import-url-deps.less

@@ -0,0 +1,2 @@
+@import url("http://fonts.googleapis.com/css?family=Roboto:300");
+@import url("https://fonts.googleapis.com/css?family=Roboto:300,400,500");

test/loader.test.js

@@ -616,4 +616,55 @@ describe('loader', () => {
     expect(getWarnings(stats)).toMatchSnapshot('warnings');
     expect(getErrors(stats)).toMatchSnapshot('errors');
   });
+
+  it('should not add to dependencies imports with URLs', async () => {
+    const testId = './import-url-deps.less';
+    const compiler = getCompiler(testId);
+    const stats = await compile(compiler);
+    const codeFromBundle = getCodeFromBundle(stats, compiler);
+    const codeFromLess = await getCodeFromLess(testId);
+    const { fileDependencies } = stats.compilation;
+
+    validateDependencies(fileDependencies);
+
+    Array.from(fileDependencies).forEach((item) => {
+      ['http', 'https'].forEach((protocol) => {
+        expect(item.includes(protocol)).toBe(false);
+      });
+    });
+
+    expect(codeFromBundle.css).toBe(codeFromLess.css);
+    expect(codeFromBundle.css).toMatchSnapshot('css');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
+
+  it('should add path to dependencies', async () => {
+    // Create the file with absolute path
+    const file = path.resolve(__dirname, 'fixtures', 'generated-3.less');
+    const absolutePath = path.resolve(__dirname, 'fixtures', 'basic.less');
+
+    fs.writeFileSync(file, `@import "${absolutePath}";`);
+
+    const testId = './generated-3.less';
+    const compiler = getCompiler(testId);
+    const stats = await compile(compiler);
+    const codeFromBundle = getCodeFromBundle(stats, compiler);
+    const { fileDependencies } = stats.compilation;
+
+    validateDependencies(fileDependencies);
+
+    let isAddedToDependensies = false;
+
+    Array.from(fileDependencies).forEach((item) => {
+      if (item === absolutePath) {
+        isAddedToDependensies = true;
+      }
+    });
+
+    expect(isAddedToDependensies).toBe(true);
+    expect(codeFromBundle.css).toMatchSnapshot('css');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
 });