ability to specify minColumnWidth for Help.wrap (#1430)

* ability to specify `minColumnWidth` for `Help.wrap`

* Added missing param in TypeScript for Help.wrap

Author: cravler

index.js

@@ -316,17 +316,17 @@ class Help {
    * @param {string} str
    * @param {number} width
    * @param {number} indent
+   * @param {number} [minColumnWidth=40]
    * @return {string}
    *
    */
 
-  wrap(str, width, indent) {
+  wrap(str, width, indent, minColumnWidth = 40) {
     // Detect manually wrapped and indented strings by searching for line breaks
     // followed by multiple spaces/tabs.
     if (str.match(/[\n]\s+/)) return str;
     // Do not wrap if not enough room for a wrapped column of text (as could end up with a word per line).
     const columnWidth = width - indent;
-    const minColumnWidth = 40;
     if (columnWidth < minColumnWidth) return str;
 
     const leadingStr = str.substr(0, indent);

typings/index.d.ts

@@ -121,7 +121,7 @@ declare namespace commander {
      * Wrap the given string to width characters per line, with lines after the first indented.
      * Do not wrap if insufficient room for wrapping, or string is manually formatted.
      */
-    wrap(str: string, width: number, indent: number): string;
+    wrap(str: string, width: number, indent: number, minColumnWidth?: number): string;
 
     /** Generate the built-in help text. */
     formatHelp(cmd: Command, helper: Help): string;