Refactor constructor to an options object

Introduce an exported TableOptions<TRow> type and replace the trailing
positional constructor parameters (displayNamesAndOrder, messageElement,
trueSymbol, falseSymbol) with a single optional options object, so call
sites are order-independent and named.

abstract-table.ts

@@ -1,3 +1,27 @@
+/**
+ * Optional configuration for a {@link Table}.
+ * @template TRow The row shape; see {@link Table}.
+ */
+export type TableOptions<TRow extends object> = {
+    /**
+     * A object with the same properties, but all string type for the header cell values.
+     * Used by passing an object with the keys of {@link TRow} and the name preferred. E.g. for a user:
+     * ```{ id: "ID", name: "Name" }```, this makes the columns appear in the order of ID then Name.
+     */
+    displayNamesAndOrder?: Record<keyof TRow, string>;
+    /**
+     * Used to display messages related to data output. Optional.
+     * Omit (undefined) to use the class provided HTMLParagraphElement.
+     * Pass an HTMLElement to use a custom element.
+     * Pass null to disable automatic message output.
+     */
+    messageElement?: HTMLElement | null;
+    /** The symbol used for boolean cells that are true. Optional, default "✔". */
+    trueSymbol?: string;
+    /** The symbol used for boolean cells that are false. Optional, default "✖". */
+    falseSymbol?: string;
+};
+
 /**
  * @template TRow A type that the shape of a row should be. E.g.
  * ```
@@ -24,35 +48,23 @@ export abstract class Table<TRow extends object> {
      * Constructs a table based on the parameters given.
      * @param exampleObject An instance of the type to be displaying. Can be an object with default/zero values for that type
      * such as `0`, `""`, `false` or `true`. E.g. for a user ```{ id: 0; name: ""; }``` would be passed.
-     * @param displayNamesAndOrder A object with the same properties, but all string type for the header cell values.
-     * Used by passing an object with the keys of {@link TRow} and the name preferred. E.g. for a user:
-     * ```{ id: "ID", name: "Name" }```, this makes the columns appear in the order of ID then Name.
-     * @param messageElement Used to display messages related to data output. Optional.
-     * Omit (undefined) to use the class provided HTMLParagraphElement.
-     * Pass an HTMLElement to use a custom element.
-     * Pass null to disable automatic message output.
-     * @param trueSymbol The symbol used for boolean cells that are true. Optional, default "✔".
-     * @param falseSymbol The symbol used for boolean cells that are false. Optional, default "✖".
+     * @param options Optional configuration. See {@link TableOptions}.
      */
-    constructor(exampleObject: TRow,
-        displayNamesAndOrder?: Record<keyof TRow, string>,
-        messageElement?: HTMLElement | undefined | null,
-        trueSymbol: string = "✔",
-        falseSymbol: string = "✖") {
+    constructor(exampleObject: TRow, options: TableOptions<TRow> = {}) {
 
         this.table = document.createElement("table")
         this.tableBody = document.createElement("tbody");
 
-        this.headers = this.createHeadersFromType(exampleObject, displayNamesAndOrder);
+        this.headers = this.createHeadersFromType(exampleObject, options.displayNamesAndOrder);
         this.setHeaderRow();
 
         this.table.appendChild(this.tableBody);
 
         // If null it means disabled
-        this.messageEl = messageElement === undefined ? document.createElement("p") : messageElement;
+        this.messageEl = options.messageElement === undefined ? document.createElement("p") : options.messageElement;
 
-        this.trueSymbol = trueSymbol;
-        this.falseSymbol = falseSymbol;
+        this.trueSymbol = options.trueSymbol ?? "✔";
+        this.falseSymbol = options.falseSymbol ?? "✖";
     }
 
     /**