fix several configuration issue and linter

src/svgcanvas/selection.js

@@ -195,6 +195,7 @@ export const getMouseTargetMethod = function (evt) {
 * @param {string} name
 * @returns {boolean}
 */
+/* eslint-disable max-len */
 /**
 * @todo Consider: Should this return an array by default, so extension results aren't overwritten?
 * @todo Would be easier to document if passing in object with key of action and vars as value; could then define an interface which tied both together
@@ -205,6 +206,7 @@ export const getMouseTargetMethod = function (evt) {
 * @param {module:svgcanvas.ExtensionNameFilter} nameFilter
 * @returns {GenericArray<module:svgcanvas.ExtensionStatus>|module:svgcanvas.ExtensionStatus|false} See {@tutorial ExtensionDocs} on the ExtensionStatus.
 */
+/* eslint-enable max-len */
 export const runExtensionsMethod = function (action, vars, returnArray, nameFilter) {
   let result = returnArray ? [] : false;
   for (const [ name, ext ] of Object.entries(selectionContext_.getExtensions())) {