Annotate settings.ts (#134)

* Annotate settings.ts

* nit

src/types/settingTypes.ts

@@ -0,0 +1,39 @@
+export type StorageLocation = "browser" | "server";
+
+export type SettingInputType =
+  | "boolean"
+  | "number"
+  | "slider"
+  | "combo"
+  | "text"
+  | "hidden";
+
+export type SettingCustomRenderer = (
+  name: string,
+  setter: (v: any) => void,
+  value: any,
+  attrs: any
+) => HTMLElement;
+
+export interface SettingOption {
+  text: string;
+  value?: string;
+}
+
+export interface Setting {
+  id: string;
+  onChange?: (value: any, oldValue?: any) => void;
+  name: string;
+  render: () => HTMLElement;
+}
+
+export interface SettingParams {
+  id: string;
+  name: string;
+  type: SettingInputType | SettingCustomRenderer;
+  defaultValue: any;
+  onChange?: (newValue: any, oldValue?: any) => void;
+  attrs?: any;
+  tooltip?: string;
+  options?: Array<string | SettingOption> | ((value: any) => SettingOption[]);
+}