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

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

"use strict";

const identifierUtils = require("./util/identifier");

/** @typedef {import("../declarations/WebpackOptions").StatsOptions} StatsOptions */
/** @typedef {import("../declarations/WebpackOptions").StatsValue} StatsValue */
/** @typedef {import("./Compilation").CreateStatsOptionsContext} CreateStatsOptionsContext */
/** @typedef {import("./Compilation").NormalizedStatsOptions} NormalizedStatsOptions */
/** @typedef {import("./Stats")} Stats */
/** @typedef {import("./stats/DefaultStatsFactoryPlugin").KnownStatsCompilation} KnownStatsCompilation */
/** @typedef {import("./stats/DefaultStatsFactoryPlugin").StatsCompilation} StatsCompilation */
/** @typedef {import("./stats/DefaultStatsFactoryPlugin").StatsError} StatsError */

/**
 * Returns indent.
 * @param {string} str string
 * @param {string} prefix pref
 * @returns {string} indent
 */
const indent = (str, prefix) => {
        const rem = str.replace(/\n([^\n])/g, `\n${prefix}$1`);
        return prefix + rem;
};

/** @typedef {StatsOptions} MultiStatsOptions */
/** @typedef {{ version: boolean, hash: boolean, errorsCount: boolean, warningsCount: boolean, errors: boolean, warnings: boolean, children: NormalizedStatsOptions[] }} ChildOptions */

class MultiStats {
        /**
         * Creates an instance of MultiStats.
         * @param {Stats[]} stats the child stats
         */
        constructor(stats) {
                this.stats = stats;
        }

        get hash() {
                return this.stats.map((stat) => stat.hash).join("");
        }

        /**
         * Checks whether this multi stats has errors.
         * @returns {boolean} true if a child compilation encountered an error
         */
        hasErrors() {
                return this.stats.some((stat) => stat.hasErrors());
        }

        /**
         * Checks whether this multi stats has warnings.
         * @returns {boolean} true if a child compilation had a warning
         */
        hasWarnings() {
                return this.stats.some((stat) => stat.hasWarnings());
        }

        /**
         * Create child options.
         * @param {undefined | StatsValue} options stats options
         * @param {CreateStatsOptionsContext} context context
         * @returns {ChildOptions} context context
         */
        _createChildOptions(options, context) {
                const getCreateStatsOptions = () => {
                        if (!options) {
                                options = {};
                        }

                        const { children: childrenOptions = undefined, ...baseOptions } =
                                typeof options === "string"
                                        ? { preset: options }
                                        : /** @type {StatsOptions} */ (options);

                        return { childrenOptions, baseOptions };
                };

                const children = this.stats.map((stat, idx) => {
                        if (typeof options === "boolean") {
                                return stat.compilation.createStatsOptions(options, context);
                        }
                        const { childrenOptions, baseOptions } = getCreateStatsOptions();
                        const childOptions = Array.isArray(childrenOptions)
                                ? childrenOptions[idx]
                                : childrenOptions;
                        if (typeof childOptions === "boolean") {
                                return stat.compilation.createStatsOptions(childOptions, context);
                        }
                        return stat.compilation.createStatsOptions(
                                {
                                        ...baseOptions,
                                        ...(typeof childOptions === "string"
                                                ? { preset: childOptions }
                                                : childOptions && typeof childOptions === "object"
                                                        ? childOptions
                                                        : undefined)
                                },
                                context
                        );
                });
                return {
                        version: children.every((o) => o.version),
                        hash: children.every((o) => o.hash),
                        errorsCount: children.every((o) => o.errorsCount),
                        warningsCount: children.every((o) => o.warningsCount),
                        errors: children.every((o) => o.errors),
                        warnings: children.every((o) => o.warnings),
                        children
                };
        }

        /**
         * Returns json output.
         * @param {StatsValue=} options stats options
         * @returns {StatsCompilation} json output
         */
        toJson(options) {
                const childOptions = this._createChildOptions(options, {
                        forToString: false
                });
                /** @type {KnownStatsCompilation} */
                const obj = {};
                obj.children = this.stats.map((stat, idx) => {
                        const obj = stat.toJson(childOptions.children[idx]);
                        const compilationName = stat.compilation.name;
                        const name =
                                compilationName &&
                                identifierUtils.makePathsRelative(
                                        stat.compilation.compiler.context,
                                        compilationName,
                                        stat.compilation.compiler.root
                                );
                        obj.name = name;
                        return obj;
                });
                if (childOptions.version) {
                        obj.version = obj.children[0].version;
                }
                if (childOptions.hash) {
                        obj.hash = obj.children.map((j) => j.hash).join("");
                }
                /**
                 * Returns result.
                 * @param {StatsCompilation} j stats error
                 * @param {StatsError} obj Stats error
                 * @returns {StatsError} result
                 */
                const mapError = (j, obj) => ({
                        ...obj,
                        compilerPath: obj.compilerPath ? `${j.name}.${obj.compilerPath}` : j.name
                });
                if (childOptions.errors) {
                        obj.errors = [];
                        for (const j of obj.children) {
                                const errors =
                                        /** @type {NonNullable<KnownStatsCompilation["errors"]>} */
                                        (j.errors);
                                for (const i of errors) {
                                        obj.errors.push(mapError(j, i));
                                }
                        }
                }
                if (childOptions.warnings) {
                        obj.warnings = [];
                        for (const j of obj.children) {
                                const warnings =
                                        /** @type {NonNullable<KnownStatsCompilation["warnings"]>} */
                                        (j.warnings);
                                for (const i of warnings) {
                                        obj.warnings.push(mapError(j, i));
                                }
                        }
                }
                if (childOptions.errorsCount) {
                        obj.errorsCount = 0;
                        for (const j of obj.children) {
                                obj.errorsCount += /** @type {number} */ (j.errorsCount);
                        }
                }
                if (childOptions.warningsCount) {
                        obj.warningsCount = 0;
                        for (const j of obj.children) {
                                obj.warningsCount += /** @type {number} */ (j.warningsCount);
                        }
                }
                return obj;
        }

        /**
         * Returns a string representation.
         * @param {StatsValue=} options stats options
         * @returns {string} string output
         */
        toString(options) {
                const childOptions = this._createChildOptions(options, {
                        forToString: true
                });
                const results = this.stats.map((stat, idx) => {
                        const str = stat.toString(childOptions.children[idx]);
                        const compilationName = stat.compilation.name;
                        const name =
                                compilationName &&
                                identifierUtils
                                        .makePathsRelative(
                                                stat.compilation.compiler.context,
                                                compilationName,
                                                stat.compilation.compiler.root
                                        )
                                        .replace(/\|/g, " ");
                        if (!str) return str;
                        return name ? `${name}:\n${indent(str, "  ")}` : str;
                });
                return results.filter(Boolean).join("\n\n");
        }
}

module.exports = MultiStats;