Remove TS usage in CancellationToken

Author: Timer

src/CancellationToken.ts

@@ -2,7 +2,7 @@ import * as crypto from 'crypto';
 import * as fs from 'fs';
 import * as os from 'os';
 import * as path from 'path';
-import * as ts from 'typescript';
+import { OperationCanceledException } from './OperationCanceledException';
 
 interface CancellationTokenData {
   isCancelled: boolean;
@@ -54,7 +54,7 @@ export class CancellationToken {
 
   throwIfCancellationRequested() {
     if (this.isCancellationRequested()) {
-      throw new ts.OperationCanceledException();
+      throw new OperationCanceledException();
     }
   }
 

src/OperationCanceledException.ts

@@ -0,0 +1 @@
+export class OperationCanceledException {}

src/service.ts

@@ -1,8 +1,8 @@
 import * as process from 'process';
-import * as ts from 'typescript';
 import { IncrementalChecker } from './IncrementalChecker';
 import { CancellationToken } from './CancellationToken';
 import { NormalizedMessage } from './NormalizedMessage';
+import { OperationCanceledException } from './OperationCanceledException';
 
 const checker = new IncrementalChecker(
   process.env.TSCONFIG,
@@ -26,7 +26,7 @@ function run(cancellationToken: CancellationToken) {
       lints = checker.getLints(cancellationToken);
     }
   } catch (error) {
-    if (error instanceof ts.OperationCanceledException) {
+    if (error instanceof OperationCanceledException) {
       return;
     }
 

test/unit/CancellationToken.spec.js

@@ -1,14 +1,15 @@
 var describe = require('mocha').describe;
 var it = require('mocha').it;
 var os = require('os');
-var ts = require('typescript');
 var fs = require('fs');
 var beforeEach = require('mocha').beforeEach;
 var afterEach = require('mocha').afterEach;
 var expect = require('chai').expect;
 var mockFs = require('mock-fs');
 var CancellationToken = require('../../lib/CancellationToken')
   .CancellationToken;
+var OperationCanceledException = require('../../lib/OperationCanceledException')
+  .OperationCanceledException;
 
 describe('[UNIT] CancellationToken', function() {
   beforeEach(function() {
@@ -63,7 +64,7 @@ describe('[UNIT] CancellationToken', function() {
     );
   });
 
-  it('should throw ts.OperationCanceledException error on cancelled', function() {
+  it('should throw OperationCanceledException error on cancelled', function() {
     var tokenA = new CancellationToken();
     expect(function() {
       tokenA.throwIfCancellationRequested();
@@ -72,7 +73,7 @@ describe('[UNIT] CancellationToken', function() {
     var tokenB = new CancellationToken('rgeer#R23r$#T$3t#$t43', true);
     expect(function() {
       tokenB.throwIfCancellationRequested();
-    }).to.throw(ts.OperationCanceledException);
+    }).to.throw(OperationCanceledException);
   });
 
   it('should write file in filesystem on requestCancellation', function() {