Use strict TypeScript, enable TSLint, update all types to work in strict mode.

global.d.ts

@@ -0,0 +1,18 @@
+declare const __webpack_public_path__: string;
+
+interface NodeModule {
+  hot: any;
+}
+
+declare namespace JSX {
+  interface Element { }
+  interface IntrinsicElements { div: any; }
+}
+
+declare module 'preact-i18n';
+declare module 'preact-material-components-drawer';
+declare module 'material-radial-progress';
+
+declare module 'classnames' {
+  export default function classnames(...args: any[]): string;
+}