TsLint version printed only one time.

Author: Giedrius Grabauskas

src/builders/tslint/tslint-builder.ts

@@ -8,21 +8,26 @@ import { LoggerInstance } from "../../utils/logger";
 
 export class TslintBuilder extends BuilderBase<void> {
     protected build(production: boolean, builder: void, done: () => void) {
-        
+
         gulp.src([
-                Paths.Builders.AllFiles.InSourceApp(".ts*"),
-                `!${Paths.Builders.AllFiles.InSourceApp("d.ts")}`
-            ])
+            Paths.Builders.AllFiles.InSourceApp(".ts*"),
+            `!${Paths.Builders.AllFiles.InSourceApp("d.ts")}`
+        ])
             .pipe(cache("scripts.tslint"))
             .pipe(tslint({
                 formatter: TsLintFormatter
             }))
             .on("end", done);
     }
 
+    private isInfoMessagePrinted = false;
+
     protected initBuilder(production: boolean) {
-        const { Linter } = require("tslint");
-        LoggerInstance.withType("TSLint").info(`Using TSLint@${Linter.VERSION}`);
+        if (!this.isInfoMessagePrinted) {
+            this.isInfoMessagePrinted = true;
+            const { Linter } = require("tslint");
+            LoggerInstance.withType("TSLint").info(`Using TSLint@${Linter.VERSION}`);
+        }
         return;
     }