* @example {{ owners | categorize(branch.diff.files_metadata) }}
 */

function categorize(fileOwners, fileMetadatas) {
    const result = new Map();
    [...fileOwners.keys()].forEach(platform => {
        result.set(platform, {
            name: platform,
            files: []
        });
    });

    Object.values(fileMetadatas).forEach(fileMetadata => {

 * @example {{ fileOwners | categorize(branch.diff.files_metadata) | changeStatistics(branch.diff.files_metadata) }}
 */
function computeStatistics(groupedFiles, fileMetadatas) {
    let totalAdditions = 0;
    let totalDeletions = 0
    let totalChangedFiles = 0;

    let summaries = [...groupedFiles.values()];
    Object.values(summaries).forEach(summary => {
        summary.additions = 0;

 * @param {String} title - description of how data is grouped
 * @returns {String} Returns the formatted HTMl table string.
 * @example {{ owners | categorize(branch.diff.files_metadata) | computeStatistics(branch.diff.files_metadata) | summaryTable('Platform') }}
 */
function summaryTable(statistics, title) {
    let preppedStatistics = statistics.filter(s => s.files.length > 0)

 */
function byPlatform(files) {
    const result = new Map();
    files.forEach(file => {
        const platform = getPlatform(file);
        if (!result.has(platform)) {
            result.set(platform, []);
        }
        result.get(platform).push(file);
    });

    console.log("byPlatform: ");
    [...result.keys()].forEach(platform => {

                .map(u => u.replace(/^@gradle\//, ""))
                .forEach(owner => {
                    if (!result.has(owner)) {
                        result.set(owner, []);
                    }
                    result.get(owner).push(f);
                });
        });

        console.log("byCodeowner: ");
        [...result.keys()].forEach(owner => {

 * @param {String} fieldName - The name of the field for the group to return
 * @returns String - The specified value
 * @example {{ files | byPlatform | categorize(branch.diff.files_metadata) | readField('jvm', 'name') }}
 */

function readField(objects, objectName, fieldName) {
    let group = Object.values(objects).find(s => s.name === objectName);
    if (group) {

    add (pattern) {
        this._added = false

        makeArray(
            isString(pattern)
                ? splitPattern(pattern)
                : pattern
        ).forEach(this._addPattern, this)

        // Some rules have just added to the ignore,
        // making the behavior changed.
        if (this._added) {
            this._initCache()
        }

        return this