[FIX] Windows: Correctly handle project paths containing non-ASCII ch…

…aracters

The `slash` module does not convert "extended-length" paths or paths
which contain non-ASCII characters as documented in the modules README:
https://github.com/sindresorhus/slash/blob/7a9158487d8046c13f2de1db7e3734d33bdbb1bd/readme.md#slash-

Since in our case the resulting POSIX paths are only used in our virtual
fs "@ui5/fs", these limitations are not relevent to us.

Therefore we can simply replace any backslashes.

Related to SAP/ui5-fs#294
Resolves SAP/ui5-tooling#469

lib/types/application/ApplicationFormatter.js

@@ -3,7 +3,6 @@ const path = require("path");
 const fs = require("graceful-fs");
 const {promisify} = require("util");
 const readFile = promisify(fs.readFile);
-const slash = require("slash");
 const AbstractUi5Formatter = require("../AbstractUi5Formatter");
 
 class ApplicationFormatter extends AbstractUi5Formatter {
@@ -44,7 +43,7 @@ class ApplicationFormatter extends AbstractUi5Formatter {
 		let p = path;
 		let projectPath = this._project.path;
 		if (posix) {
-			projectPath = slash(projectPath);
+			projectPath = projectPath.replace(/\\/g, "/");
 			p = path.posix;
 		}
 		return p.join(projectPath, this._project.resources.pathMappings["/"]);

lib/types/library/LibraryFormatter.js

@@ -4,7 +4,6 @@ const fs = require("graceful-fs");
 const {promisify} = require("util");
 const readFile = promisify(fs.readFile);
 const glob = require("globby");
-const slash = require("slash");
 const AbstractUi5Formatter = require("../AbstractUi5Formatter");
 
 const SAP_THEMES_NS_EXEMPTIONS = ["themelib_sap_fiori_3", "themelib_sap_bluecrystal", "themelib_sap_belize"];
@@ -67,7 +66,7 @@ class LibraryFormatter extends AbstractUi5Formatter {
 		let p = path;
 		let projectPath = this._project.path;
 		if (posix) {
-			projectPath = slash(projectPath);
+			projectPath = projectPath.replace(/\\/g, "/");
 			p = path.posix;
 		}
 		return p.join(projectPath, this._project.resources.pathMappings["/resources/"]);
@@ -247,7 +246,7 @@ class LibraryFormatter extends AbstractUi5Formatter {
 
 	getNamespaceFromFsPath(fsPath) {
 		// Transform path to POSIX and remove any trailing slashes
-		const posixFsPath = slash(fsPath).replace(/\/$/, "");
+		const posixFsPath = fsPath.replace(/\\/g, "/").replace(/\/$/, "");
 
 		// Remove base path from fsPath
 		const posixBasePath = this.getSourceBasePath(true);

package.json

@@ -122,7 +122,6 @@
 		"replacestream": "^4.0.3",
 		"rimraf": "^3.0.2",
 		"semver": "^7.3.4",
-		"slash": "^3.0.0",
 		"terser": "^5.5.1",
 		"xml2js": "^0.4.23",
 		"yazl": "^2.5.1"