Add mockTypeScriptVersion option to force tslint to use the same type…

…script version as the plugin. Fixes #58

README.md

@@ -41,6 +41,7 @@ Your `node_modules` folder should look like this:
  * `alwaysShowRuleFailuresAsWarnings` - always show rule failures as warnings, ignoring the severity configuration in the tslint.json configuration.
  * `disableNoUnusedVariableRule` - disable `no-unused-variable` rule.
  * `supressWhileTypeErrorsPresent` - supress tslint errors from being reported while other errors are present.
+ * `mockTypeScriptVersion` - force tslint to use the same version of TypeScript as this plugin. This will affect other plugins that require the typescript package.
 
 Here a configuration sample:
 
@@ -53,7 +54,8 @@ Here a configuration sample:
         "ignoreDefinitionFiles": true,
         "configFile": "../tslint.json",
         "disableNoUnusedVariableRule": false,
-        "supressWhileTypeErrorsPresent": false
+        "supressWhileTypeErrorsPresent": false,
+        "mockTypeScriptVersion": false
       }
     ]
   }

package.json

@@ -17,10 +17,13 @@
     "test": "tsc && tape out/test/**/*.spec.js",
     "lint": "tslint src/index.ts"
   },
-  "dependencies": {},
+  "dependencies": {
+    "mock-require": "^2.0.2"
+  },
   "devDependencies": {
     "@types/node": "^7.0.8",
     "@types/tape": "^4.2.29",
+    "@types/mock-require": "^2.0.0",
     "tape": "^4.6.3",
     "tslint": "^5.2.0",
     "typescript": "^2.3.2",

src/index.ts

@@ -1,6 +1,7 @@
 import * as ts_module from "../node_modules/typescript/lib/tsserverlibrary";
 import * as tslint from 'tslint';
 import * as path from 'path';
+import * as mockRequire from 'mock-require';
 
 // Settings for the plugin section in tsconfig.json
 interface Settings {
@@ -9,13 +10,15 @@ interface Settings {
     configFile?: string;
     disableNoUnusedVariableRule?: boolean  // support to enable/disable the workaround for https://github.com/Microsoft/TypeScript/issues/15344
     supressWhileTypeErrorsPresent: boolean;
+    mockTypeScriptVersion: boolean;
 }
 
 //TODO we "steal"" an error code with a registered code fix. 2515 = implement inherited abstract class
 const TSLINT_ERROR_CODE = 2515;
 
 function init(modules: { typescript: typeof ts_module }) {
     const ts = modules.typescript;
+    let tslint = require('tslint');
 
     let codeFixActions = new Map<string, Map<string, tslint.RuleFailure>>();
     let registeredCodeFixes = false;
@@ -63,6 +66,11 @@ function init(modules: { typescript: typeof ts_module }) {
         let config: Settings = fixRelativeConfigFilePath(info.config, info.project.getCurrentDirectory());
         let configuration: tslint.Configuration.IConfigurationFile = null;
 
+        if(config.mockTypeScriptVersion) {
+            mockRequire('typescript', ts);
+            tslint = mockRequire.reRequire('tslint');
+        }
+
         // Set up decorator
         const proxy = Object.create(null) as ts.LanguageService;
         const oldLS = info.languageService;