Merge branch '10758-always-strict' of https://github.com/slawomir/TypeScript into slawomir-10758-always-strict

tests/cases/compiler/alwaysStrict.ts

@@ -0,0 +1,5 @@
+// @alwaysStrict: true
+
+function f() {
+    var arguments = [];
+}

tests/cases/compiler/alwaysStrictAlreadyUseStrict.ts

@@ -0,0 +1,5 @@
+// @alwaysStrict: true
+"use strict"
+function f() {
+    var a = [];
+}

tests/cases/compiler/alwaysStrictES6.ts

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+// @target: ES6
+// @alwaysStrict: true
+
+function f() {
+    var arguments = [];
+}

tests/cases/compiler/alwaysStrictModule.ts

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+// @module: commonjs
+// @alwaysStrict: true
+
+module M {
+    export function f() {
+        var arguments = [];
+    }
+}

tests/cases/compiler/alwaysStrictNoImplicitUseStrict.ts

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+// @module: commonjs
+// @alwaysStrict: true
+// @noImplicitUseStrict: true
+
+module M {
+    export function f() {
+        var arguments = [];
+    }
+}