message: refactor: renames in experimental-loader
  also import decache with its type
diff: +import { loader } from 'webpack';
  +import postcss from 'postcss';
  +import decache from 'decache';
  import { Stylable, processNamespace, StylableResults } from '@stylable/core';
  import { StylableOptimizer } from '@stylable/optimizer';
  -import { loader } from 'webpack';
  import { getOptions, isUrlRequest, stringifyRequest } from 'loader-utils';
  import { Warning, CssSyntaxError } from './warning';
  -import postcss from 'postcss';
  import { addMetaDependencies } from './add-meta-dependencies';
  import { getStylable } from './cached-stylable-factory';
  import { createRuntimeTargetCode } from './create-runtime-target-code';
  @@ -11,8 +12,8 @@ import { createRuntimeTargetCode } from './create-runtime-target-code';
  // TODO: maybe adopt the code
  const { urlParser } = require('css-loader/dist/plugins');
  const { getImportCode, getModuleCode, sort } = require('css-loader/dist/utils');
  -const decache = require('decache');
  -const CSS_LOADER_API = require.resolve('css-loader/dist/runtime/api');
  +const cssLoaderRuntimeApiPath = require.resolve('css-loader/dist/runtime/api');
  +
  export let stylable: Stylable;
  export interface LoaderOptions {
  @@ -93,7 +94,7 @@ const stylableLoader: loader.Loader = function (content) {
  const urlPluginImports: LoaderImport[] = [
  {
  importName: '___CSS_LOADER_API_IMPORT___',
  - url: stringifyRequest(this, CSS_LOADER_API),
  + url: stringifyRequest(this, cssLoaderRuntimeApiPath),
  index: -1,
  },
  ];
  