fix lint

tslint.json

@@ -17,7 +17,7 @@
     "jsdoc-format": true,
     "label-position": true,
     "label-undefined": true,
-	"max-line-length": [true, 140],
+    "max-line-length": [true, 140],
     "member-ordering": [true, {
         "order": [
           "public-static-field",
@@ -46,7 +46,7 @@
     "no-parameter-properties": true,
     "no-debugger": true,
     "no-duplicate-key": true,
-	"no-duplicate-variable": true,
+    "no-duplicate-variable": true,
     "no-empty": true,
     "no-eval": true,
     "no-string-literal": false,
@@ -55,7 +55,7 @@
     "no-unused-expression": true,
     "no-unused-variable": true,
     "no-unreachable": true,
-	"no-use-before-declare": true,
+    "no-use-before-declare": true,
     "no-var-requires": true,
     "one-line": [true,
       "check-open-brace",
@@ -72,7 +72,7 @@
       "member-variable-declaration",
       "parameter",
       "call-signature"
-	],
+    ],
       "typedef-whitespace": [true, {
       "call-signature": "nospace",
       "index-signature": "nospace",