fix: generate normalized cache context relative paths (#54)

package.json

@@ -41,6 +41,7 @@
     "loader-utils": "^1.1.0",
     "mkdirp": "^0.5.1",
     "neo-async": "^2.6.0",
+    "normalize-path": "^3.0.0",
     "schema-utils": "^1.0.0"
   },
   "devDependencies": {
@@ -66,7 +67,6 @@
     "jest": "^23.6.0",
     "lint-staged": "^8.1.0",
     "memory-fs": "^0.4.1",
-    "normalize-path": "^3.0.0",
     "pre-commit": "^1.0.0",
     "prettier": "^1.15.2",
     "standard-version": "^4.0.0",

src/index.js

@@ -3,6 +3,7 @@
 */
 const fs = require('fs');
 const path = require('path');
+const normalizePath = require('normalize-path');
 const async = require('neo-async');
 const crypto = require('crypto');
 const mkdirp = require('mkdirp');
@@ -33,13 +34,13 @@ function pathWithCacheContext(cacheContext, originalPath) {
   if (originalPath.includes(cacheContext)) {
     return originalPath
       .split('!')
-      .map((subPath) => path.relative(cacheContext, subPath))
+      .map((subPath) => normalizePath(path.relative(cacheContext, subPath)))
       .join('!');
   }
 
   return originalPath
     .split('!')
-    .map((subPath) => path.resolve(cacheContext, subPath))
+    .map((subPath) => normalizePath(path.resolve(cacheContext, subPath)))
     .join('!');
 }
 

test/__snapshots__/cacheContext-option.test.js.snap

@@ -1,8 +1,8 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`cacheContext option should generate absolute paths to the project root 2: errors 1`] = `Array []`;
+exports[`cacheContext option should generate absolute paths to the project root: errors 1`] = `Array []`;
 
-exports[`cacheContext option should generate absolute paths to the project root 2: warnings 1`] = `Array []`;
+exports[`cacheContext option should generate absolute paths to the project root: warnings 1`] = `Array []`;
 
 exports[`cacheContext option should generate relative paths to the project root: errors 1`] = `Array []`;
 

test/cacheContext-option.test.js

@@ -1,5 +1,7 @@
 const path = require('path');
+
 const normalizePath = require('normalize-path');
+
 const { webpack } = require('./helpers');
 
 const mockCacheLoaderWriteFn = jest.fn();
@@ -26,9 +28,7 @@ const mockRelativeWebpackConfig = {
 };
 
 const buildSnapshotReadyDeps = (deps) =>
-  deps.map((dep) =>
-    Object.assign({}, dep, { mtime: null, path: normalizePath(dep.path) })
-  );
+  deps.map((dep) => Object.assign({}, dep, { mtime: null, path: dep.path }));
 
 const buildCacheLoaderCallsData = (calls) =>
   Array.from(
@@ -38,7 +38,7 @@ const buildCacheLoaderCallsData = (calls) =>
 
         return builtCalls.set(rawData.remainingRequest, {
           ...rawData,
-          remainingRequest: normalizePath(rawData.remainingRequest),
+          remainingRequest: rawData.remainingRequest,
           dependencies: buildSnapshotReadyDeps(rawData.dependencies),
           contextDependencies: buildSnapshotReadyDeps(
             rawData.contextDependencies
@@ -79,7 +79,22 @@ describe('cacheContext option', () => {
     expect(stats.compilation.errors).toMatchSnapshot('errors');
   });
 
-  it('should generate absolute paths to the project root 2', async () => {
+  it('should generate normalized relative paths to the project root', async () => {
+    const testId = './basic/index.js';
+    await webpack(testId, mockRelativeWebpackConfig);
+
+    const cacheLoaderCallsData = buildCacheLoaderCallsData(
+      mockCacheLoaderWriteFn.mock.calls
+    ).sort(sortData);
+
+    expect(
+      cacheLoaderCallsData.every(
+        (call) => call.remainingRequest === normalizePath(call.remainingRequest)
+      )
+    );
+  });
+
+  it('should generate absolute paths to the project root', async () => {
     const testId = './basic/index.js';
     const stats = await webpack(testId, mockBaseWebpackConfig);