html-webpack-plugin/lib/errors.js

// @ts-nocheck
"use strict";

let prettyError;

function getPrettyError() {
  if (!prettyError) {
    // lazily require to improve startup time since pretty-error is rather heavy package
    const PrettyError = require("pretty-error");
    prettyError = new PrettyError();
    prettyError.withoutColors();
    prettyError.skipPackage("html-plugin-evaluation");
    prettyError.skipNodeFiles();
    prettyError.skip(function (traceLine) {
      return traceLine.path === "html-plugin-evaluation";
    });
  }
  return prettyError;
}

module.exports = function (err, context) {
  return {
    toHtml: function () {
      return "Html Webpack Plugin:\n<pre>\n" + this.toString() + "</pre>";
    },
    toJsonHtml: function () {
      return JSON.stringify(this.toHtml());
    },
    toString: function () {
      try {
        return getPrettyError()
          .render(err)
          .replace(/webpack:\/\/\/\./g, context);
      } catch (e) {
        // This can sometimes fail. We don't know why, but returning the
        // original error is better than returning the error thrown by
        // pretty-error.
        return err;
      }
    },
  };
};