Add «basedir» option (fix #7)

README.md

@@ -187,6 +187,7 @@ Passes continue to stream only those files that need to be compiled.
 | `log`             | `Function` | `console.log`                                        | +          | The function that will be called if the file needs to be compiled. |
 | `cleanupInterval` | `Number`   | `null`                                               | -          | Time interval over which the Storage will be cleared of obsolete items. Recommended for projects very big projects. |
 | `makeVinylFile`   | `Boolean`  | `false`                                              | +          | You can use `gulp.src('patterns', { read: false })` to reduce access for filesystem. This option creates a Vinyl file within a Stream. |
+| `basedir`   | `String`   | `null`                                                 | -          | The root directory of all absolute inclusion. |
 | `scanner.depth`   | `Number`   | `30`                                                 | -          | The maximum number of nested directories to scan. |
 | `scanner.exclude` | `String[]` | `['.git', '**/node_modules', '**/bower_components']` | -          | List of Glob-patterns for directories that are excluded when scanning. |
 

src/emitty.ts

@@ -44,6 +44,10 @@ export interface IOptions {
 	 * Creates a Vinyl file for the file which should be compiled.
 	 */
 	makeVinylFile?: boolean;
+	/**
+	 * The root directory of all absolute inclusion.
+	 */
+	basedir?: string;
 }
 
 export interface IEmittyApi {
@@ -96,7 +100,8 @@ export function setup(root: string, language: string | ILanguage, options?: IOpt
 		snapshot: {},
 		cleanupInterval: null,
 		log: () => console.log,
-		vinylFile: false
+		vinylFile: false,
+		basedir: null
 	}, options);
 
 	options.scanner = Object.assign(<IScannerOptions>{

src/services/scanner.ts

@@ -127,10 +127,10 @@ export class Scanner {
 						base: '_' + parsedPath.base
 					}));
 
-					dependencies.push(join(entryDir, buildedPath));
+					dependencies.push(this.makeDependencyPath(entryDir, buildedPath));
 				}
 
-				dependencies.push(join(entryDir, filepath));
+				dependencies.push(this.makeDependencyPath(entryDir, filepath));
 			}
 
 			item.dependencies = dependencies;
@@ -139,6 +139,14 @@ export class Scanner {
 		});
 	}
 
+	private makeDependencyPath(entryDir: string, filepath: string): string {
+		if (filepath.startsWith('/') && this.options.basedir) {
+			return join(this.options.basedir, filepath);
+		}
+
+		return join(entryDir, filepath);
+	}
+
 	private makeEntryFile(filepath: string, ctime: Date): IFile {
 		return {
 			filepath,

src/test/services/scanner.spec.ts

@@ -6,7 +6,9 @@ import { Storage } from '../../services/storage';
 import { Config } from '../../services/config';
 import { Scanner } from '../../services/scanner';
 
-const options = {
+import { IOptions } from '../../emitty';
+
+const options = <IOptions>{
 	scanner: {
 		depth: 30,
 		exclude: ['.git', '**/node_modules', '**/bower_components']