Function getMatcherString

packages/pluginutils/src/createFilter.ts:10–24

(id: string, resolutionBase: string | false | null | undefined)

import normalizePath from './normalizePath';

function getMatcherString(id: string, resolutionBase: string | false | null | undefined) {
  if (resolutionBase === false || isAbsolute(id) || id.startsWith('**')) {
    return normalizePath(id);
  }

  // resolve('') is valid and will default to process.cwd()
  const basePath = normalizePath(resolve(resolutionBase || ''))
    // escape all possible (posix + win) path characters that might interfere with regex
    .replace(/[-^$*+?.()|[\]{}]/g, '\\$&');
  // Note that we use posix.join because:
  // 1. the basePath has been normalized to use /
  // 2. the incoming glob (id) matcher, also uses /
  // otherwise Node will force backslash (\) on windows
  return posix.join(basePath, normalizePath(id));
}

const createFilter: CreateFilter = function createFilter(include?, exclude?, options?) {
  const resolutionBase = options && options.resolve;