- Linting (ESLint): Stricter rules (or switch to warning)

- Breaking internal API change: `updateGripCursor` moved to be class method of Selector rather than instance method
- Breaking internal API change: `subpathIsClosed` moved to be class method of `Path` rather than instance method
- Refactoring: Reuse utilities base64 encoder for SVG icons plugin
- Docs (JSDoc): Fix return of the `mouseUp` (can also be an object) and `mouseDown` (may also be a boolean) of `pathActions`; other JSDoc additions/improvements

editor/external/dynamic-import-polyfill/importModule.js

@@ -5,12 +5,23 @@
  * @module importModule
  */
 
+/**
+ * Converts a possible relative URL into an absolute one.
+ * @param {string} url
+ * @returns {string}
+ */
 function toAbsoluteURL (url) {
   const a = document.createElement('a');
   a.setAttribute('href', url); // <a href="hoge.html">
   return a.cloneNode(false).href; // -> "http://example.com/hoge.html"
 }
 
+/**
+ * Add any of the whitelisted attributes to the script tag.
+ * @param {HTMLScriptElement} script
+ * @param {PlainObject.<string, string>} atts
+ * @returns {undefined}
+ */
 function addScriptAtts (script, atts) {
   ['id', 'class', 'type'].forEach((prop) => {
     if (prop in atts) {
@@ -27,18 +38,19 @@ function addScriptAtts (script, atts) {
 */
 /**
 * @function module:importModule.importSetGlobalDefault
-* @param {string} url
+* @param {string|string[]} url
 * @param {module:importModule.ImportConfig} config
-* @returns {*} The return depends on the export of the targeted module.
+* @returns {Promise} The value to which it resolves depends on the export of the targeted module.
 */
-export async function importSetGlobalDefault (url, config) {
+export function importSetGlobalDefault (url, config) {
   return importSetGlobal(url, {...config, returnDefault: true});
 }
 /**
 * @function module:importModule.importSetGlobal
-* @param {string} url
+* @param {string|string[]} url
 * @param {module:importModule.ImportConfig} config
-* @returns {ArbitraryModule|*} The return depends on the export of the targeted module.
+* @returns {Promise} The promise resolves to either an `ArbitraryModule` or
+*   any other value depends on the export of the targeted module.
 */
 export async function importSetGlobal (url, {global, returnDefault}) {
   // Todo: Replace calls to this function with `import()` when supported
@@ -51,14 +63,21 @@ export async function importSetGlobal (url, {global, returnDefault}) {
   await importScript(url);
   return window[global];
 }
-// Addition by Brett
+/**
+ *
+ * @author Brett Zamir (other items are from `dynamic-import-polyfill`)
+ * @param {string|string[]} url
+ * @param {Object} [atts={}]
+ * @returns {Promise} Resolves to `undefined` or rejects with an `Error` upon a
+ *   script loading error
+ */
 export function importScript (url, atts = {}) {
   if (Array.isArray(url)) {
     return Promise.all(url.map((u) => {
       return importScript(u, atts);
     }));
   }
-  return new Promise((resolve, reject) => {
+  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
     const script = document.createElement('script');
     const destructor = () => {
       script.onerror = null;
@@ -82,13 +101,22 @@ export function importScript (url, atts = {}) {
   });
 }
 
+/**
+ *
+ * @param {string|string[]} url
+ * @param {Object} [atts={}]
+ * @param {PlainObject} opts
+ * @param {boolean} [opts.returnDefault=false} = {}]
+ * @returns {Promise} Resolves to value of loading module or rejects with
+ *   `Error` upon a script loading error.
+ */
 export function importModule (url, atts = {}, {returnDefault = false} = {}) {
   if (Array.isArray(url)) {
     return Promise.all(url.map((u) => {
       return importModule(u, atts);
     }));
   }
-  return new Promise((resolve, reject) => {
+  return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
     const vector = '$importModule$' + Math.random().toString(32).slice(2);
     const script = document.createElement('script');
     const destructor = () => {