Update eslint (#638)

* Add json test

* Update vscode settings to better handle json

* Collapse eslint rules for easier readability

* Reorganize

* Update no-multi-spaces rule for JSON

* Rules updates

* Switch to @stylistic/eslint-plugin

* Update deprecated stylistic rules

* Group stylistic rules

* Simplify rules

* Move eslint env overrides to end of file

* Add test

* Move promiseAnimationFrame to separate file

* Remove unneeded eslint disable

* Remove unneeded

1 files changed, 0 insertions, 45 deletions

diff --git a/ext/js/core/utilities.js b/ext/js/core/utilities.js
index 784acdaf..1b785e79 100644
--- a/ext/js/core/utilities.js
+++ b/ext/js/core/utilities.js
@@ -270,48 +270,3 @@ export function deferPromise() {
 export function promiseTimeout(delay) {
     return delay <= 0 ? Promise.resolve() : new Promise((resolve) => { setTimeout(resolve, delay); });
 }
-
-/**
- * Creates a promise that will resolve after the next animation frame, using `requestAnimationFrame`.
- * @param {number} [timeout] A maximum duration (in milliseconds) to wait until the promise resolves. If null or omitted, no timeout is used.
- * @returns {Promise<{time: number, timeout: boolean}>} A promise that is resolved with `{time, timeout}`, where `time` is the timestamp from `requestAnimationFrame`,
- *   and `timeout` is a boolean indicating whether the cause was a timeout or not.
- * @throws The promise throws an error if animation is not supported in this context, such as in a service worker.
- */
-export function promiseAnimationFrame(timeout) {
-    return new Promise((resolve, reject) => {
-        if (typeof cancelAnimationFrame !== 'function' || typeof requestAnimationFrame !== 'function') {
-            reject(new Error('Animation not supported in this context'));
-            return;
-        }
-
-        /** @type {?import('core').Timeout} */
-        let timer = null;
-        /** @type {?number} */
-        let frameRequest = null;
-        /**
-         * @param {number} time
-         */
-        const onFrame = (time) => {
-            frameRequest = null;
-            if (timer !== null) {
-                clearTimeout(timer);
-                timer = null;
-            }
-            resolve({time, timeout: false});
-        };
-        const onTimeout = () => {
-            timer = null;
-            if (frameRequest !== null) {
-                cancelAnimationFrame(frameRequest);
-                frameRequest = null;
-            }
-            resolve({time: performance.now(), timeout: true});
-        };
-
-        frameRequest = requestAnimationFrame(onFrame);
-        if (typeof timeout === 'number') {
-            timer = setTimeout(onTimeout, timeout);
-        }
-    });
-}