stylus-native-loader/dist/stylus-compat.js

A super fast Stylus loader for Webpack that leverages the built-in power of Stylus

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.stylus = exports.suppressWarnings = void 0;

/**
 * This witchcraft gets rid of the annoying warnings caused by Stylus in Node >= 14.
 * As soon as the Stylus pull request is merged and released, this file will be removed.
 *
 * @see https://github.com/stylus/stylus/pull/2538
 * @see https://github.com/slightlyfaulty/stylus-native-loader#stylus-warnings-since-node-v14
 */
const allowSuppressWarnings = !process.env.NODE_NO_WARNINGS && !process.env.STYLUS_NO_COMPAT && +process.version.slice(1, process.version.indexOf('.')) >= 14;
let listeners = [];

function disableWarnings() {
  if (listeners.length) return false;
  listeners = process.listeners('warning');

  if (listeners.length) {
    // warnings are only emitted and handled on the next tick
    process.nextTick(() => {
      process.removeAllListeners('warning');
    });
  }
}

function enableWarnings() {
  if (!listeners.length) return false; // put everything back the way it was. we were never here...

  process.nextTick(() => {
    for (const listener of listeners) {
      process.on('warning', listener);
    }

    listeners = [];
  });
}

const suppressWarnings = allowSuppressWarnings ? callback => {
  disableWarnings();
  const result = callback();
  enableWarnings();
  return result;
} : callback => callback();
exports.suppressWarnings = suppressWarnings;
const stylus = allowSuppressWarnings ? suppressWarnings(() => require('stylus')) : require('stylus');
exports.stylus = stylus;