feat(resolve-extends): accept absolute path in extends (#825)

Author: merceyz

@commitlint/resolve-extends/src/index.test.ts

@@ -101,6 +101,22 @@ test('ignores prefix for relative extends', () => {
 	expect(ctx.require).toHaveBeenCalledWith('./extender');
 });
 
+test('ignores prefix for absolute extends', () => {
+	const absolutePath = require.resolve('@commitlint/config-angular');
+	const input = {extends: [absolutePath]};
+	const ctx = {
+		resolve: id,
+		require: jest.fn(() => ({}))
+	} as ResolveExtendsContext;
+
+	resolveExtends(input, {
+		...ctx,
+		prefix: 'prefix'
+	});
+
+	expect(ctx.require).toHaveBeenCalledWith(absolutePath);
+});
+
 test('propagates return value of require function', () => {
 	const input = {extends: ['extender-name']};
 	const propagated = {foo: 'bar'};

@commitlint/resolve-extends/src/index.ts

@@ -82,12 +82,13 @@ function getId(raw: string = '', prefix: string = ''): string {
 	const first = raw.charAt(0);
 	const scoped = first === '@';
 	const relative = first === '.';
+	const absolute = path.isAbsolute(raw);
 
 	if (scoped) {
 		return raw.includes('/') ? raw : [raw, prefix].filter(String).join('/');
 	}
 
-	return relative ? raw : [prefix, raw].filter(String).join('-');
+	return relative || absolute ? raw : [prefix, raw].filter(String).join('-');
 }
 
 function resolveConfig<T>(