fix: normalize path segment separation

package.json

@@ -47,7 +47,8 @@
     "is-glob": "^4.0.0",
     "loader-utils": "^1.1.0",
     "minimatch": "^3.0.4",
-    "p-limit": "^2.1.0"
+    "p-limit": "^2.1.0",
+    "normalize-path": "^3.0.0"
   },
   "devDependencies": {
     "@babel/cli": "^7.1.5",

src/preProcessPattern.js

@@ -1,8 +1,9 @@
 import path from 'path';
 
 import isGlob from 'is-glob';
+import normalizePath from 'normalize-path';
 
-import escape from './utils/escape';
+import normalize from './utils/normalize';
 import isObject from './utils/isObject';
 import { stat } from './utils/promisify';
 
@@ -41,6 +42,7 @@ export default function preProcessPattern(globalRef, pattern) {
     pattern.context = path.join(context, pattern.context);
   }
 
+  pattern.context = normalizePath(pattern.context);
   pattern.ignore = globalRef.ignore.concat(pattern.ignore || []);
 
   info(`processing from: '${pattern.from}' to: '${pattern.to}'`);
@@ -68,9 +70,11 @@ export default function preProcessPattern(globalRef, pattern) {
     const globOptions = Object.assign({}, pattern.from);
     delete globOptions.glob;
 
-    pattern.glob = escape(pattern.context, pattern.from.glob);
+    pattern.glob = normalize(pattern.context, pattern.from.glob);
     pattern.globOptions = globOptions;
-    pattern.absoluteFrom = path.resolve(pattern.context, pattern.from.glob);
+    pattern.absoluteFrom = normalizePath(
+      path.resolve(pattern.context, pattern.from.glob)
+    );
 
     return Promise.resolve(pattern);
   }
@@ -81,6 +85,9 @@ export default function preProcessPattern(globalRef, pattern) {
     pattern.absoluteFrom = path.resolve(pattern.context, pattern.from);
   }
 
+  // Normalize path when path separators are mixed (like `C:\\directory/nested-directory/`)
+  pattern.absoluteFrom = normalizePath(pattern.absoluteFrom);
+
   debug(
     `determined '${pattern.from}' to be read from '${pattern.absoluteFrom}'`
   );
@@ -89,7 +96,7 @@ export default function preProcessPattern(globalRef, pattern) {
     // If from doesn't appear to be a glob, then log a warning
     if (isGlob(pattern.from) || pattern.from.indexOf('*') !== -1) {
       pattern.fromType = 'glob';
-      pattern.glob = escape(pattern.context, pattern.from);
+      pattern.glob = normalize(pattern.context, pattern.from);
 
       // We need to add context directory as dependencies to avoid problems when new files added in directories
       // when we already in watch mode and this directories are not in context dependencies
@@ -130,7 +137,7 @@ export default function preProcessPattern(globalRef, pattern) {
 
         pattern.fromType = 'dir';
         pattern.context = pattern.absoluteFrom;
-        pattern.glob = escape(pattern.absoluteFrom, '**/*');
+        pattern.glob = normalize(pattern.absoluteFrom, '**/*');
         pattern.absoluteFrom = path.join(pattern.absoluteFrom, '**/*');
         pattern.globOptions = {
           dot: true,
@@ -140,7 +147,7 @@ export default function preProcessPattern(globalRef, pattern) {
 
         pattern.fromType = 'file';
         pattern.context = path.dirname(pattern.absoluteFrom);
-        pattern.glob = escape(pattern.absoluteFrom);
+        pattern.glob = normalize(pattern.absoluteFrom);
         pattern.globOptions = {
           dot: true,
         };

src/processPattern.js

@@ -3,6 +3,7 @@ import path from 'path';
 import globby from 'globby';
 import pLimit from 'p-limit';
 import minimatch from 'minimatch';
+import normalizePath from 'normalize-path';
 
 import isObject from './utils/isObject';
 
@@ -41,6 +42,9 @@ export default function processPattern(globalRef, pattern) {
             file.relativeFrom = path.basename(file.relativeFrom);
           }
 
+          // Ensure forward slashes
+          file.relativeFrom = normalizePath(file.relativeFrom);
+
           debug(`found ${from}`);
 
           // Check the ignore list
@@ -106,8 +110,8 @@ export default function processPattern(globalRef, pattern) {
             file.webpackTo = path.relative(output, file.webpackTo);
           }
 
-          // ensure forward slashes
-          file.webpackTo = file.webpackTo.replace(/\\/g, '/');
+          // Ensure forward slashes
+          file.webpackTo = normalizePath(file.webpackTo);
 
           info(`determined that '${from}' should write to '${file.webpackTo}'`);
 

src/utils/escape.js → src/utils/normalize.js

@@ -1,6 +1,8 @@
 import path from 'path';
 
-export default function escape(context, from) {
+import normalizePath from 'normalize-path';
+
+function escape(context, from) {
   if (from && path.isAbsolute(from)) {
     return from;
   }
@@ -24,3 +26,7 @@ export default function escape(context, from) {
 
   return `${absoluteContext}/${from}`;
 }
+
+export default function normalize(context, from) {
+  return normalizePath(escape(context, from));
+}