1  "use strict";
 2  Object.defineProperty(exports, "__esModule", { value: true });
 3  exports.formatAsBanner = void 0;
 4  const colors = require("colors/safe");
 5  /**
 6   * Returns a set of strings when printed on the console produces a banner msg. The message is in the following format -
 7   * ********************
 8   * *** msg line x   ***
 9   * *** msg line xyz ***
10   * ********************
11   *
12   * Spec:
13   * - The width of every line is equal, dictated by the longest message string
14   * - The first and last lines are '*'s for the full length of the line
15   * - Each line in between is prepended with '*** ' and appended with ' ***'
16   * - The text is indented left, i.e. whitespace is right-padded when the length is shorter than the longest.
17   *
18   * @param msgs array of strings containing the message lines to be printed in the banner. Returns empty string if array
19   * is empty.
20   * @returns array of strings containing the message formatted as a banner
21   */
22  function formatAsBanner(msgs) {
23      const printLen = (str) => colors.strip(str).length;
24      if (msgs.length === 0) {
25          return [];
26      }
27      const leftPad = '*** ';
28      const rightPad = ' ***';
29      const bannerWidth = printLen(leftPad) + printLen(rightPad) +
30          msgs.reduce((acc, msg) => Math.max(acc, printLen(msg)), 0);
31      const bannerLines = [];
32      bannerLines.push('*'.repeat(bannerWidth));
33      // Improvement: If any 'msg' is wider than the terminal width, wrap message across lines.
34      msgs.forEach((msg) => {
35          const padding = ' '.repeat(bannerWidth - (printLen(msg) + printLen(leftPad) + printLen(rightPad)));
36          bannerLines.push(''.concat(leftPad, msg, padding, rightPad));
37      });
38      bannerLines.push('*'.repeat(bannerWidth));
39      return bannerLines;
40  }
41  exports.formatAsBanner = formatAsBanner;
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