feat: path utils

src/__tests__/path.spec.ts

@@ -0,0 +1,32 @@
+import { isAbsolute, normalize } from '../path';
+
+describe('Path utils', () => {
+  describe('isAbsolute fn', () => {
+    test.each([
+      'c:\\foo\\bar.json',
+      'c:\\',
+      'c:/',
+      'c:/foo/bar.json',
+      '/home/test',
+      '/',
+      '/var/lib/test/',
+      '/var/bin.d',
+    ])('should treat %s path as absolute', filepath => {
+      expect(isAbsolute(filepath)).toBe(true);
+    });
+  });
+
+  test.each(['\\foo\\bar.json', 'foo/bar', 'test'])('should treat %s path as non-absolute', filepath => {
+    expect(isAbsolute(filepath)).toBe(false);
+  });
+
+  describe('normalize fn', () => {
+    test('should replace windows-like slashes with POSIX-compatible ones', () => {
+      expect(normalize('c:\\foo\\bar')).toEqual('c:/foo/bar');
+    });
+
+    test('should ignore POSIX slashes', () => {
+      expect(normalize('/d/foo')).toEqual('/d/foo');
+    });
+  });
+});

src/path.ts

@@ -0,0 +1,12 @@
+import * as path from 'path';
+import * as URI from 'urijs';
+import { URI as VSURI } from 'vscode-uri';
+
+export const isAbsolute = (filepath: string) => path.isAbsolute(filepath) || new URI(filepath).is('absolute');
+
+export const join = (...parts: string[]) => parts.join('/');
+export const normalize = (filepath: string) => path.normalize(filepath).replace(/\\/g, '/');
+
+export function toFSPath(uri: string) {
+  return path.normalize(VSURI.file(uri).fsPath);
+}