Merge pull request #1553 from barak007/patch-2

Fix browser bundling with webpack 5

lib/input.js

@@ -130,7 +130,9 @@ class Input {
 
     result.input = { line, column, source: this.css }
     if (this.file) {
-      result.input.url = pathToFileURL(this.file).toString()
+      if (pathToFileURL) {
+        result.input.url = pathToFileURL(this.file).toString()
+      }
       result.input.file = this.file
     }
 
@@ -162,7 +164,12 @@ class Input {
     }
 
     if (fromUrl.protocol === 'file:') {
-      result.file = fileURLToPath(fromUrl)
+      if (fileURLToPath) {
+        result.file = fileURLToPath(fromUrl)
+      } else {
+        // istanbul ignore next
+        throw new Error(`file: protocol is not available in this PostCSS build`);
+      }
     }
 
     let source = consumer.sourceContentFor(from.source)

lib/map-generator.js

@@ -4,7 +4,7 @@ let { dirname, resolve, relative, sep } = require('path')
 let { pathToFileURL } = require('url')
 let mozilla = require('source-map')
 
-let pathAvailable = Boolean(dirname, resolve, relative, sep)
+let pathAvailable = Boolean(dirname && resolve && relative && sep)
 
 class MapGenerator {
   constructor(stringify, root, opts) {
@@ -202,7 +202,12 @@ class MapGenerator {
     if (this.mapOpts.from) {
       return this.toUrl(this.mapOpts.from)
     } else if (this.mapOpts.absolute) {
-      return pathToFileURL(node.source.input.from).toString()
+      if (pathToFileURL) {
+        return pathToFileURL(node.source.input.from).toString()
+      } else {
+        // istanbul ignore next
+        throw new Error('`map.absolute` option is not available in this PostCSS build')
+      }
     } else {
       return this.toUrl(this.path(node.source.input.from))
     }

package.json

@@ -103,7 +103,8 @@
     "./lib/terminal-highlight": false,
     "colorette": false,
     "fs": false,
-    "path": false
+    "path": false,
+    "url": false
   },
   "size-limit": [
     {