Convert backend to ESM

- About 5 years overdue
- Remove eslint, use bomejs instead

backend/lib/helpers.js

@@ -1,62 +1,58 @@
-const moment       = require('moment');
-const {isPostgres} = require('./config');
-const {ref}        = require('objection');
+import moment from "moment";
+import { ref } from "objection";
+import { isPostgres } from "./config.js";
 
-module.exports = {
-
-	/**
-	 * Takes an expression such as 30d and returns a moment object of that date in future
-	 *
-	 * Key      Shorthand
-	 * ==================
-	 * years         y
-	 * quarters      Q
-	 * months        M
-	 * weeks         w
-	 * days          d
-	 * hours         h
-	 * minutes       m
-	 * seconds       s
-	 * milliseconds  ms
-	 *
-	 * @param {String}  expression
-	 * @returns {Object}
-	 */
-	parseDatePeriod: function (expression) {
-		let matches = expression.match(/^([0-9]+)(y|Q|M|w|d|h|m|s|ms)$/m);
-		if (matches) {
-			return moment().add(matches[1], matches[2]);
-		}
-
-		return null;
-	},
-
-	convertIntFieldsToBool: function (obj, fields) {
-		fields.forEach(function (field) {
-			if (typeof obj[field] !== 'undefined') {
-				obj[field] = obj[field] === 1;
-			}
-		});
-		return obj;
-	},
-
-	convertBoolFieldsToInt: function (obj, fields) {
-		fields.forEach(function (field) {
-			if (typeof obj[field] !== 'undefined') {
-				obj[field] = obj[field] ? 1 : 0;
-			}
-		});
-		return obj;
-	},
-
-	/**
-	 * Casts a column to json if using postgres
-	 *
-	 * @param {string} colName
-	 * @returns {string|Objection.ReferenceBuilder}
-	 */
-	castJsonIfNeed: function (colName) {
-		return isPostgres() ? ref(colName).castText() : colName;
+/**
+ * Takes an expression such as 30d and returns a moment object of that date in future
+ *
+ * Key      Shorthand
+ * ==================
+ * years         y
+ * quarters      Q
+ * months        M
+ * weeks         w
+ * days          d
+ * hours         h
+ * minutes       m
+ * seconds       s
+ * milliseconds  ms
+ *
+ * @param {String}  expression
+ * @returns {Object}
+ */
+const parseDatePeriod = (expression) => {
+	const matches = expression.match(/^([0-9]+)(y|Q|M|w|d|h|m|s|ms)$/m);
+	if (matches) {
+		return moment().add(matches[1], matches[2]);
 	}
 
+	return null;
 };
+
+const convertIntFieldsToBool = (obj, fields) => {
+	fields.forEach((field) => {
+		if (typeof obj[field] !== "undefined") {
+			obj[field] = obj[field] === 1;
+		}
+	});
+	return obj;
+};
+
+const convertBoolFieldsToInt = (obj, fields) => {
+	fields.forEach((field) => {
+		if (typeof obj[field] !== "undefined") {
+			obj[field] = obj[field] ? 1 : 0;
+		}
+	});
+	return obj;
+};
+
+/**
+ * Casts a column to json if using postgres
+ *
+ * @param {string} colName
+ * @returns {string|Objection.ReferenceBuilder}
+ */
+const castJsonIfNeed = (colName) => (isPostgres() ? ref(colName).castText() : colName);
+
+export { parseDatePeriod, convertIntFieldsToBool, convertBoolFieldsToInt, castJsonIfNeed };