smartstring/ts/smartstring.normalize.ts

import * as plugins from './smartstring.plugins.js';

/**
 * replaces all occurences of something in a string
 * @param stringArg
 * @param searchPattern
 * @param replacementString
 */
export const replaceAll = (stringArg: string, searchPattern: string, replacementString: string) => {
  return stringArg.replace(new RegExp(searchPattern, 'g'), replacementString);
};

export interface INormalizeOptions {
  stripLeadingTrailingEmptyLines?: boolean;
  stripAllEmptyLines?: boolean;
  stripIndent?: boolean;
  normalizeNewline?: boolean;
  replaceTabs?: boolean;
}

/**
 * Normalizes a string
 * @param stringArg
 * @param options
 */
export const standard = (stringArg: string, options?: INormalizeOptions): string => {
  let result = stringArg;

  if (!options || options.stripIndent) {
    result = plugins.stripIndent(result); // fix indention
  }

  if (!options || options.normalizeNewline) {
    result = result.replace(/\r\n/g, '\n'); // fix newlines
  }

  if (!options || options.replaceTabs) {
    result = replaceAll(result, '\t/', ' '); // fix tabs
  }

  if (!options || options.stripLeadingTrailingEmptyLines) {
    result = result.replace(/^\s*[\r\n]/gm, '').replace(/\s*[\r\n]$/gm, '');
  }

  if (!options || options.stripAllEmptyLines) {
    result = result.replace(/^\s*[\r\n]/gm, '');
  }

  return result;
};