message: Use makeString from util
diff: -import { AST, Doc, FastPath, Options, Parser, ParserOptions, Plugin } from 'prettier';
  +import { AST, Doc, FastPath, Options, Parser, ParserOptions, Plugin, util } from 'prettier';
  // @ts-ignore
  import * as lex from 'pug-lexer';
  import { createLogger, Logger, LogLevel } from './logger';
  import { Token } from './pug-token';
  +const { makeString } = util;
  +
  const logger: Logger = createLogger(console);
  if (process.env.NODE_ENV === 'test') {
  logger.setLogLevel(LogLevel.DEBUG);
  @@ -29,11 +31,6 @@ function quotationType(code: string): QuotationType | undefined {
  return;
  }
  -function quote(useSingleQuote: boolean, value: string): string {
  - const quote: string = useSingleQuote ? "'" : '"';
  - return `${quote}${value}${quote}`;
  -}
  -
  export const plugin: Plugin = {
  languages: [
  {
  @@ -146,7 +143,7 @@ export const plugin: Plugin = {
  );
  }
  if (specialClasses.length > 0) {
  - token.val = quote(singleQuote, specialClasses.join(' '));
  + token.val = makeString(specialClasses.join(' '), singleQuote ? "'" : '"', false);
  } else {
  break;
  }
  