refactor: rename NS to MODULE_TYPE and use a static value (#265)

Author: michael-ciniawsky

Diff for: src/index.js

@@ -1,6 +1,3 @@
-import fs from 'fs';
-import path from 'path';
-
 import webpack from 'webpack';
 import sources from 'webpack-sources';
 
@@ -10,7 +7,7 @@ const {
   util: { createHash },
 } = webpack;
 
-const NS = path.dirname(fs.realpathSync(__filename));
+const MODULE_TYPE = 'css/mini-extract';
 
 const pluginName = 'mini-css-extract-plugin';
 
@@ -44,7 +41,7 @@ class CssDependencyTemplate {
 
 class CssModule extends webpack.Module {
   constructor(dependency) {
-    super(NS, dependency.context);
+    super(MODULE_TYPE, dependency.context);
     this._identifier = dependency.identifier;
     this._identifierIndex = dependency.identifierIndex;
     this.content = dependency.content;
@@ -141,7 +138,7 @@ class MiniCssExtractPlugin {
       compilation.hooks.normalModuleLoader.tap(pluginName, (lc, m) => {
         const loaderContext = lc;
         const module = m;
-        loaderContext[NS] = (content) => {
+        loaderContext[MODULE_TYPE] = (content) => {
           if (!Array.isArray(content) && content != null) {
             throw new Error(
               `Exported value was not extracted as an array: ${JSON.stringify(
@@ -169,7 +166,7 @@ class MiniCssExtractPlugin {
         pluginName,
         (result, { chunk }) => {
           const renderedModules = Array.from(chunk.modulesIterable).filter(
-            (module) => module.type === NS
+            (module) => module.type === MODULE_TYPE
           );
           if (renderedModules.length > 0) {
             result.push({
@@ -183,10 +180,10 @@ class MiniCssExtractPlugin {
               filenameTemplate: this.options.filename,
               pathOptions: {
                 chunk,
-                contentHashType: NS,
+                contentHashType: MODULE_TYPE,
               },
               identifier: `${pluginName}.${chunk.id}`,
-              hash: chunk.contentHash[NS],
+              hash: chunk.contentHash[MODULE_TYPE],
             });
           }
         }
@@ -195,7 +192,7 @@ class MiniCssExtractPlugin {
         pluginName,
         (result, { chunk }) => {
           const renderedModules = Array.from(chunk.modulesIterable).filter(
-            (module) => module.type === NS
+            (module) => module.type === MODULE_TYPE
           );
           if (renderedModules.length > 0) {
             result.push({
@@ -209,10 +206,10 @@ class MiniCssExtractPlugin {
               filenameTemplate: this.options.chunkFilename,
               pathOptions: {
                 chunk,
-                contentHashType: NS,
+                contentHashType: MODULE_TYPE,
               },
               identifier: `${pluginName}.${chunk.id}`,
-              hash: chunk.contentHash[NS],
+              hash: chunk.contentHash[MODULE_TYPE],
             });
           }
         }
@@ -226,7 +223,9 @@ class MiniCssExtractPlugin {
           }
           if (REGEXP_CONTENTHASH.test(chunkFilename)) {
             hash.update(
-              JSON.stringify(chunk.getChunkMaps(true).contentHash[NS] || {})
+              JSON.stringify(
+                chunk.getChunkMaps(true).contentHash[MODULE_TYPE] || {}
+              )
             );
           }
           if (REGEXP_NAME.test(chunkFilename)) {
@@ -239,12 +238,12 @@ class MiniCssExtractPlugin {
         const { hashFunction, hashDigest, hashDigestLength } = outputOptions;
         const hash = createHash(hashFunction);
         for (const m of chunk.modulesIterable) {
-          if (m.type === NS) {
+          if (m.type === MODULE_TYPE) {
             m.updateHash(hash);
           }
         }
         const { contentHash } = chunk;
-        contentHash[NS] = hash
+        contentHash[MODULE_TYPE] = hash
           .digest(hashDigest)
           .substring(0, hashDigestLength);
       });
@@ -294,14 +293,14 @@ class MiniCssExtractPlugin {
                     )}[chunkId] + "`;
                   },
                   contentHash: {
-                    [NS]: `" + ${JSON.stringify(
-                      chunkMaps.contentHash[NS]
+                    [MODULE_TYPE]: `" + ${JSON.stringify(
+                      chunkMaps.contentHash[MODULE_TYPE]
                     )}[chunkId] + "`,
                   },
                   contentHashWithLength: {
-                    [NS]: (length) => {
+                    [MODULE_TYPE]: (length) => {
                       const shortContentHashMap = {};
-                      const contentHash = chunkMaps.contentHash[NS];
+                      const contentHash = chunkMaps.contentHash[MODULE_TYPE];
                       for (const chunkId of Object.keys(contentHash)) {
                         if (typeof contentHash[chunkId] === 'string') {
                           shortContentHashMap[chunkId] = contentHash[
@@ -318,7 +317,7 @@ class MiniCssExtractPlugin {
                     chunkMaps.name
                   )}[chunkId]||chunkId) + "`,
                 },
-                contentHashType: NS,
+                contentHashType: MODULE_TYPE,
               }
             );
             return Template.asString([
@@ -382,7 +381,7 @@ class MiniCssExtractPlugin {
     const obj = {};
     for (const chunk of mainChunk.getAllAsyncChunks()) {
       for (const module of chunk.modulesIterable) {
-        if (module.type === NS) {
+        if (module.type === MODULE_TYPE) {
           obj[chunk.id] = 1;
           break;
         }

Diff for: src/loader.js

@@ -1,5 +1,3 @@
-import fs from 'fs';
-import path from 'path';
 import NativeModule from 'module';
 
 import loaderUtils from 'loader-utils';
@@ -9,7 +7,7 @@ import LibraryTemplatePlugin from 'webpack/lib/LibraryTemplatePlugin';
 import SingleEntryPlugin from 'webpack/lib/SingleEntryPlugin';
 import LimitChunkCountPlugin from 'webpack/lib/optimize/LimitChunkCountPlugin';
 
-const NS = path.dirname(fs.realpathSync(__filename));
+const MODULE_TYPE = 'css/mini-extract';
 const pluginName = 'mini-css-extract-plugin';
 
 const exec = (loaderContext, code, filename) => {
@@ -53,15 +51,15 @@ export function pitch(request) {
     childCompiler
   );
   new LimitChunkCountPlugin({ maxChunks: 1 }).apply(childCompiler);
-  // We set loaderContext[NS] = false to indicate we already in
+  // We set loaderContext[MODULE_TYPE] = false to indicate we already in
   // a child compiler so we don't spawn another child compilers from there.
   childCompiler.hooks.thisCompilation.tap(
     `${pluginName} loader`,
     (compilation) => {
       compilation.hooks.normalModuleLoader.tap(
         `${pluginName} loader`,
         (loaderContext, module) => {
-          loaderContext[NS] = false; // eslint-disable-line no-param-reassign
+          loaderContext[MODULE_TYPE] = false; // eslint-disable-line no-param-reassign
           if (module.request === request) {
             // eslint-disable-next-line no-param-reassign
             module.loaders = loaders.map((loader) => {
@@ -125,7 +123,7 @@ export function pitch(request) {
           };
         });
       }
-      this[NS](text);
+      this[MODULE_TYPE](text);
     } catch (e) {
       return callback(e);
     }