feat: added the sourceFilename info (original source filename) to a…

…ssets info (#542)

README.md

@@ -48,6 +48,8 @@ module.exports = {
 
 > ℹ️ If you want `webpack-dev-server` to write files to the output directory during development, you can force it with the [`writeToDisk`](https://github.com/webpack/webpack-dev-middleware#writetodisk) option or the [`write-file-webpack-plugin`](https://github.com/gajus/write-file-webpack-plugin).
 
+> ℹ️ You can get the original source filename from [Asset Objects](https://webpack.js.org/api/stats/#asset-objects).
+
 ## Options
 
 The plugin's signature:

package.json

@@ -43,6 +43,7 @@
   "dependencies": {
     "cacache": "^15.0.5",
     "fast-glob": "^3.2.4",
+    "file-loader": "^6.1.1",
     "find-cache-dir": "^3.3.1",
     "glob-parent": "^5.1.1",
     "globby": "^11.0.1",

src/index.js

@@ -99,12 +99,13 @@ class CopyPlugin {
     pattern.to = path.normalize(
       typeof pattern.to !== 'undefined' ? pattern.to : ''
     );
+    pattern.compilerContext = compiler.context;
     pattern.context = path.normalize(
       typeof pattern.context !== 'undefined'
         ? !path.isAbsolute(pattern.context)
-          ? path.join(compiler.options.context, pattern.context)
+          ? path.join(pattern.compilerContext, pattern.context)
           : pattern.context
-        : compiler.options.context
+        : pattern.compilerContext
     );
 
     logger.debug(`processing from "${pattern.from}" to "${pattern.to}"`);
@@ -303,7 +304,11 @@ class CopyPlugin {
 
       logger.log(`determined that "${from}" should write to "${webpackTo}"`);
 
-      return { absoluteFrom, relativeFrom, webpackTo };
+      const sourceFilename = normalizePath(
+        path.relative(pattern.compilerContext, absoluteFrom)
+      );
+
+      return { absoluteFrom, sourceFilename, relativeFrom, webpackTo };
     });
 
     return Promise.all(
@@ -527,6 +532,7 @@ class CopyPlugin {
             .filter(Boolean)
             .forEach((asset) => {
               const {
+                sourceFilename,
                 absoluteFrom,
                 targetPath,
                 webpackTo,
@@ -551,7 +557,7 @@ class CopyPlugin {
                     `force updating "${webpackTo}" to compilation assets from "${absoluteFrom}"`
                   );
 
-                  const info = { copied: true };
+                  const info = { copied: true, sourceFilename };
 
                   if (asset.immutable) {
                     info.immutable = true;
@@ -573,7 +579,7 @@ class CopyPlugin {
                 `writing "${webpackTo}" to compilation assets from "${absoluteFrom}"`
               );
 
-              const info = { copied: true };
+              const info = { copied: true, sourceFilename };
 
               if (asset.immutable) {
                 info.immutable = true;

test/CopyPlugin.test.js

@@ -2,6 +2,7 @@ import path from 'path';
 
 import webpack from 'webpack';
 import del from 'del';
+import { createFsFromVolume, Volume } from 'memfs';
 
 import CopyPlugin from '../src';
 
@@ -380,6 +381,70 @@ describe('CopyPlugin', () => {
         .then(done)
         .catch(done);
     });
+
+    it('should work with multi compiler mode', async () => {
+      const compiler = webpack([
+        {
+          mode: 'development',
+          context: path.resolve(__dirname, './fixtures'),
+          entry: path.resolve(__dirname, './helpers/enter.js'),
+          output: {
+            path: path.resolve(__dirname, './outputs/multi-compiler/dist/a'),
+          },
+          stats: {
+            source: true,
+          },
+          plugins: [
+            new CopyPlugin({
+              patterns: [
+                {
+                  from: path.resolve(__dirname, './fixtures/directory'),
+                },
+              ],
+            }),
+          ],
+        },
+        {
+          mode: 'development',
+          entry: path.resolve(__dirname, './helpers/enter.js'),
+          output: {
+            path: path.resolve(__dirname, './outputs/multi-compiler/dist/b'),
+          },
+          stats: {
+            source: true,
+          },
+          plugins: [
+            new CopyPlugin({
+              patterns: [
+                {
+                  context: path.resolve(__dirname, './fixtures'),
+                  from: path.resolve(__dirname, './fixtures/directory'),
+                },
+              ],
+            }),
+          ],
+        },
+      ]);
+
+      compiler.compilers.forEach((item) => {
+        const outputFileSystem = createFsFromVolume(new Volume());
+        // Todo remove when we drop webpack@4 support
+        outputFileSystem.join = path.join.bind(path);
+
+        // eslint-disable-next-line no-param-reassign
+        item.outputFileSystem = outputFileSystem;
+      });
+
+      const { stats } = await compile(compiler);
+
+      stats.stats.forEach((item, index) => {
+        expect(item.compilation.errors).toMatchSnapshot('errors');
+        expect(item.compilation.warnings).toMatchSnapshot('warnings');
+        expect(readAssets(compiler.compilers[index], item)).toMatchSnapshot(
+          'assets'
+        );
+      });
+    });
   });
 
   describe('watch mode', () => {
@@ -747,6 +812,57 @@ describe('CopyPlugin', () => {
     });
   });
 
+  describe('stats', () => {
+    it('should work have assets info', async () => {
+      const compiler = getCompiler({
+        entry: path.resolve(__dirname, './helpers/enter-with-asset-modules.js'),
+      });
+
+      new CopyPlugin({
+        patterns: [
+          {
+            from: path.resolve(__dirname, './fixtures/directory'),
+          },
+        ],
+      }).apply(compiler);
+
+      const { stats } = await compile(compiler);
+
+      expect(stats.compilation.warnings).toMatchSnapshot('warnings');
+      expect(stats.compilation.errors).toMatchSnapshot('errors');
+      expect(readAssets(compiler, stats)).toMatchSnapshot('assets');
+
+      const assetsInfo = [];
+
+      for (const [name, info] of stats.compilation.assetsInfo.entries()) {
+        assetsInfo.push({
+          name,
+          info: {
+            // Workaround for `file-loader`
+            // eslint-disable-next-line no-undefined
+            immutable: info.immutable === false ? undefined : info.immutable,
+            copied: info.copied,
+            sourceFilename: info.sourceFilename,
+          },
+        });
+      }
+
+      expect(
+        assetsInfo.sort((a, b) => {
+          if (a.name < b.name) {
+            return -1;
+          }
+
+          if (a.name > b.name) {
+            return 1;
+          }
+
+          return 0;
+        })
+      ).toMatchSnapshot('assets info');
+    });
+  });
+
   describe('logging', () => {
     it('should logging when "from" is a file', (done) => {
       const expectedAssetKeys = ['file.txt'];

test/__snapshots__/CopyPlugin.test.js.snap

@@ -1,5 +1,33 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`CopyPlugin basic should work with multi compiler mode: assets 1`] = `
+Object {
+  ".dottedfile": "dottedfile contents
+",
+  "directoryfile.txt": "new",
+  "nested/deep-nested/deepnested.txt": "",
+  "nested/nestedfile.txt": "",
+}
+`;
+
+exports[`CopyPlugin basic should work with multi compiler mode: assets 2`] = `
+Object {
+  ".dottedfile": "dottedfile contents
+",
+  "directoryfile.txt": "new",
+  "nested/deep-nested/deepnested.txt": "",
+  "nested/nestedfile.txt": "",
+}
+`;
+
+exports[`CopyPlugin basic should work with multi compiler mode: errors 1`] = `Array []`;
+
+exports[`CopyPlugin basic should work with multi compiler mode: errors 2`] = `Array []`;
+
+exports[`CopyPlugin basic should work with multi compiler mode: warnings 1`] = `Array []`;
+
+exports[`CopyPlugin basic should work with multi compiler mode: warnings 2`] = `Array []`;
+
 exports[`CopyPlugin cache should work with the "filesystem" cache: assets 1`] = `
 Object {
   ".dottedfile": "dottedfile contents
@@ -132,3 +160,71 @@ Object {
   ],
 }
 `;
+
+exports[`CopyPlugin stats should work have assets info: assets 1`] = `
+Object {
+  ".dottedfile": "dottedfile contents
+",
+  "asset-modules/deepnested.txt": "",
+  "directoryfile.txt": "new",
+  "nested/deep-nested/deepnested.txt": "",
+  "nested/nestedfile.txt": "",
+}
+`;
+
+exports[`CopyPlugin stats should work have assets info: assets info 1`] = `
+Array [
+  Object {
+    "info": Object {
+      "copied": true,
+      "immutable": undefined,
+      "sourceFilename": "directory/.dottedfile",
+    },
+    "name": ".dottedfile",
+  },
+  Object {
+    "info": Object {
+      "copied": undefined,
+      "immutable": undefined,
+      "sourceFilename": undefined,
+    },
+    "name": "asset-modules/deepnested.txt",
+  },
+  Object {
+    "info": Object {
+      "copied": true,
+      "immutable": undefined,
+      "sourceFilename": "directory/directoryfile.txt",
+    },
+    "name": "directoryfile.txt",
+  },
+  Object {
+    "info": Object {
+      "copied": undefined,
+      "immutable": undefined,
+      "sourceFilename": undefined,
+    },
+    "name": "main.js",
+  },
+  Object {
+    "info": Object {
+      "copied": true,
+      "immutable": undefined,
+      "sourceFilename": "directory/nested/deep-nested/deepnested.txt",
+    },
+    "name": "nested/deep-nested/deepnested.txt",
+  },
+  Object {
+    "info": Object {
+      "copied": true,
+      "immutable": undefined,
+      "sourceFilename": "directory/nested/nestedfile.txt",
+    },
+    "name": "nested/nestedfile.txt",
+  },
+]
+`;
+
+exports[`CopyPlugin stats should work have assets info: errors 1`] = `Array []`;
+
+exports[`CopyPlugin stats should work have assets info: warnings 1`] = `Array []`;

test/helpers/enter-with-asset-modules.js

@@ -0,0 +1,3 @@
+import txtURL from '../fixtures/directory/nested/deep-nested/deepnested.txt';
+
+export default txtURL;

test/helpers/getCompiler.js

@@ -11,13 +11,28 @@ export default (config = {}) => {
     output: {
       path: path.resolve(__dirname, '../build'),
     },
+    module: {
+      rules: [
+        webpack.version[0] === '5'
+          ? {
+              test: /\.txt/,
+              type: 'asset/resource',
+              generator: {
+                filename: 'asset-modules/[name][ext]',
+              },
+            }
+          : {
+              test: /\.txt/,
+              loader: 'file-loader',
+              options: {
+                name: 'asset-modules/[name].[ext]',
+              },
+            },
+      ],
+    },
     ...config,
   };
 
-  if (webpack.version[0] === 5) {
-    fullConfig.stats.source = true;
-  }
-
   const compiler = webpack(fullConfig);
 
   if (!config.outputFileSystem) {