Merge pull request #56 from krzkaczor/kk/config-path-fix

Make configFile relative to project root

README.md

@@ -36,7 +36,7 @@ Your `node_modules` folder should look like this:
 
 **Notice** this configuration settings allow you to configure the behaviour of the tslint-language-service plugin. To configure rules and tslint options you should use the `tslint.json` file.
 
- * `configFile` - the configuration file that tslint should use instead of the default tslint.json.
+ * `configFile` - the configuration file that tslint should use instead of the default tslint.json. A relative file path is resolved relative to the project root.
  * `ignoreDefinitionFiles` - control if TypeScript definition files should be ignored.
  * `alwaysShowRuleFailuresAsWarnings` - always show rule failures as warnings, ignoring the severity configuration in the tslint.json configuration.
  * `disableNoUnusedVariableRule` - disable `no-unused-variable` rule.

src/index.ts

@@ -47,10 +47,20 @@ function init(modules: { typescript: typeof ts_module }) {
         });
     }
 
-    function create(info: ts.server.PluginCreateInfo) {
+    function fixRelativeConfigFilePath(config: Settings, projectRoot: string): Settings {
+        if (!config.configFile) {
+            return config;
+        }
+        if (path.isAbsolute(config.configFile)) {
+            return config;
+        }
+        config.configFile = path.join(projectRoot, config.configFile);
+        return config;
+    }
 
+    function create(info: ts.server.PluginCreateInfo) {
         info.project.projectService.logger.info("tslint-language-service loaded");
-        let config: Settings = info.config;
+        let config: Settings = fixRelativeConfigFilePath(info.config, info.project.getCurrentDirectory());
         let configuration: tslint.Configuration.IConfigurationFile = null;
 
         // Set up decorator