/**
 * @module nullToEmpty
 * @description Returns the specified value if non-null, otherwise an empty array.
 * @param {Object} input - The object to investigate
 * @returns Object - The specified value if non-null, otherwise an empty array
 * @example {{ readField('jvm', 'files') | nullToEmpty }}
 */
function nullToEmpty(input) {
    let output;
    if (input) {
        output = input;
    } else {
        output = [];
    }

 * @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) {
        const result = group[fieldName];

/* istanbul ignore else */
if (typeof Symbol !== 'undefined') {
    TMP_KEY_IGNORE = Symbol.for('node-ignore')
}
const KEY_IGNORE = TMP_KEY_IGNORE

const define = (object, key, value) =>
    Object.defineProperty(object, key, {value})

const REGEX_REGEXP_RANGE = /([0-z])-([0-z])/g

const RETURN_FALSE = () => false

// Sanitize the range of a regular expression
// The cases are complicated, see test cases for details