fix(#1): antd.css less transform throw

README.md

@@ -25,7 +25,7 @@ Update your jest configure, and add it into transform.
 
 ```diff
 +    "transform": {
-+      ".+\\.less$": "jest-less-loader"
++      "\\.(less|css)$": "jest-less-loader"
 +    },
 ```
 

__tests__/electron-css.spec.ts

@@ -0,0 +1,9 @@
+// @ts-ignore
+import transformer from '../src';
+import './css.css';
+
+describe('jest-less-loader', () => {
+  test('import css', () => {
+    expect(document.querySelectorAll('style')[0].innerHTML).toContain('antd');
+  });
+});

__tests__/electron.spec.ts

@@ -29,6 +29,6 @@ describe('jest-less-loader', () => {
     }
     `;
 
-    expect(() => transformer.process(less)).toThrow();
+    expect(() => transformer.process(less)).not.toThrow();
   });
 });

__tests__/node.spec.ts

@@ -12,7 +12,7 @@ describe('jest-less-loader', () => {
     }
     `;
 
-    expect(transformer.process(less).code).toEqual('');
+    expect(transformer.process(less).code).toBe('');
   });
 
   test('transformer less syntax', () => {
@@ -24,6 +24,7 @@ describe('jest-less-loader', () => {
     }
     `;
 
-    expect(() => transformer.process(less)).toThrow();
+    // only warn, not throw
+    expect(() => transformer.process(less)).not.toThrow();
   });
 });

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jest-less-loader",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Jest transformer for .less file.",
   "license": "MIT",
   "main": "lib/index.js",
@@ -11,7 +11,7 @@
     "clean": "rimraf -rf lib",
     "lint": "eslint src/**/*.ts __tests__/**/*.ts",
     "lint-staged": "lint-staged",
-    "test": "jest",
+    "test": "jest --no-cache",
     "ci": "npm run lint && npm run test && lint-md .",
     "start": "tsc -w",
     "build": "rimraf ./lib && tsc --module commonjs --outDir lib",
@@ -55,7 +55,7 @@
       "src/**/*.ts"
     ],
     "transform": {
-      ".+\\.less$": "./lib/index.js"
+      "\\.(less|css)$": "./lib/index.js"
     }
 },
   "lint-staged": {

src/index.ts

@@ -46,14 +46,26 @@ function injectStyle(css: string): void {
  * @type {{process(*=): *}}
  */
 module.exports = {
-  process(fileContent): object {
-    const css = transformLess(fileContent);
-
-    // when running in nodejs env, will throw error.
+  process(fileContent: string, filePath: string): object {
+    let css = fileContent;
     try {
-      injectStyle(css);
+      // if .less, transform, if .css, keep it
+      css = filePath.endsWith('.less')
+        ? transformLess(fileContent)
+        : filePath.endsWith('.css')
+        ? fileContent
+        : fileContent;
     } catch (e) {
-      // do nothing
+      // if throw, use file content
+      css = fileContent;
+      console.warn('jest-less-loader: process the file error.', { fileContent, filePath });
+    } finally {
+      // when running in nodejs env, will throw error.
+      try {
+        injectStyle(css);
+      } catch (e) {
+        // do nothing
+      }
     }
 
     // no code for js module