message: * Remove chai dependency from test-kit
diff: -import { expect } from 'chai';
  import * as postcss from 'postcss';
  export function matchRuleAndDeclaration(
  @@ -9,11 +8,13 @@ export function matchRuleAndDeclaration(
  msg?: string
  ) {
  const rule = parent.nodes![selectorIndex] as postcss.Rule;
  - expect(rule.selector, `${msg ? msg + ' ' : ''}selector ${selectorIndex}`).to.equal(selector);
  - expect(
  - rule.nodes!.map(x => x.toString()).join(';'),
  - `${msg ? msg + ' ' : ''}selector ${selectorIndex} first declaration`
  - ).to.equal(decl);
  + if (rule.selector !== selector) {
  + throw new Error(`${msg ? msg + ' ' : ''}selector ${selectorIndex}`);
  + }
  + // expect(rule.selector, `${msg ? msg + ' ' : ''}selector ${selectorIndex}`).to.equal(selector);
  + if (rule.nodes!.map(x => x.toString()).join(';') !== decl) {
  + throw new Error(`${msg ? msg + ' ' : ''}selector ${selectorIndex} first declaration`);
  + }
  }
  export function matchAllRulesAndDeclarations(
  