source: frontend/node_modules/webpack/lib/Stats.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Tobias Koppers @sokra
*/

"use strict";

/** @typedef {import("../declarations/WebpackOptions").StatsOptions} StatsOptions */
/** @typedef {import("../declarations/WebpackOptions").StatsValue} StatsValue */
/** @typedef {import("./Compilation")} Compilation */
/** @typedef {import("./stats/DefaultStatsFactoryPlugin").StatsCompilation} StatsCompilation */

class Stats {
        /**
         * Creates an instance of Stats.
         * @param {Compilation} compilation webpack compilation
         */
        constructor(compilation) {
                this.compilation = compilation;
        }

        get hash() {
                return this.compilation.hash;
        }

        get startTime() {
                return this.compilation.startTime;
        }

        get endTime() {
                return this.compilation.endTime;
        }

        /**
         * Checks whether this stats has warnings.
         * @returns {boolean} true if the compilation had a warning
         */
        hasWarnings() {
                return (
                        this.compilation.getWarnings().length > 0 ||
                        this.compilation.children.some((child) => child.getStats().hasWarnings())
                );
        }

        /**
         * Checks whether this stats has errors.
         * @returns {boolean} true if the compilation encountered an error
         */
        hasErrors() {
                return (
                        this.compilation.errors.length > 0 ||
                        this.compilation.children.some((child) => child.getStats().hasErrors())
                );
        }

        /**
         * Returns json output.
         * @param {StatsValue=} options stats options
         * @returns {StatsCompilation} json output
         */
        toJson(options) {
                const normalizedOptions = this.compilation.createStatsOptions(options, {
                        forToString: false
                });

                const statsFactory = this.compilation.createStatsFactory(normalizedOptions);

                return statsFactory.create("compilation", this.compilation, {
                        compilation: this.compilation
                });
        }

        /**
         * Returns a string representation.
         * @param {StatsValue=} options stats options
         * @returns {string} string output
         */
        toString(options) {
                const normalizedOptions = this.compilation.createStatsOptions(options, {
                        forToString: true
                });

                const statsFactory = this.compilation.createStatsFactory(normalizedOptions);
                const statsPrinter = this.compilation.createStatsPrinter(normalizedOptions);

                const data = statsFactory.create("compilation", this.compilation, {
                        compilation: this.compilation
                });
                const result = statsPrinter.print("compilation", data);
                return result === undefined ? "" : result;
        }
}

module.exports = Stats;