Add declaration emit test and test to make sure we don't give dynamic import implicit "use strict"

tests/cases/conformance/es2018/dynamicImport/importCallExpressionAllowInScriptContext1.ts

@@ -0,0 +1,10 @@
+// @module: commonjs
+// @target: es6
+// @noImplicitAny: false
+
+// @filename: 0.ts
+export function foo() { return "foo"; }
+
+// @filename: 1.ts
+var p1 = import("./0");
+function arguments() { } // this is allow as the file doesn't have implicit "use strict"

tests/cases/conformance/es2018/dynamicImport/importCallExpressionAllowInScriptContext2.ts

@@ -0,0 +1,11 @@
+// @module: commonjs
+// @target: es6
+// @noImplicitAny: false
+
+// @filename: 0.ts
+export function foo() { return "foo"; }
+
+// @filename: 1.ts
+"use strict"
+var p1 = import("./0");
+function arguments() { }

tests/cases/conformance/es2018/dynamicImport/importCallExpressionDeclarationEmit1.ts

@@ -0,0 +1,19 @@
+// @module: commonjs
+// @target: es6
+// @noImplicitAny: false
+// @declaration: true
+
+declare function getSpecifier(): string;
+declare var whatToLoad: boolean;
+declare const directory: string;
+declare const moduleFile: number;
+
+import(getSpecifier());
+
+var p0 = import(`${directory}\${moduleFile}`);
+var p1 = import(getSpecifier());
+const p2 = import(whatToLoad ? getSpecifier() : "defaulPath")
+
+function returnDynamicLoad(path: string) {
+    return import(path);
+}

tests/cases/conformance/es2018/dynamicImport/importCallExpressionDeclarationEmit2.ts

@@ -0,0 +1,10 @@
+// @module: es2018
+// @target: esnext
+// @declaration: true
+
+// @filename: 0.ts
+export function foo() { return "foo"; }
+
+// @filename: 1.ts
+import("./0");
+var p1 = import("./0");