chore(linting): enable restrict-plus-operands

frontend/scripts/fontawesome.ts

@@ -99,7 +99,7 @@ export function getFontawesomeConfig(debug = false): FontawesomeConfig {
     (it) => !(solid.includes(it) || regular.includes(it) || brands.includes(it))
   );
   if (leftOvers.length !== 0) {
-    throw new Error("unknown icons: " + leftOvers);
+    throw new Error("unknown icons: " + leftOvers.toString());
   }
 
   if (debug) {

frontend/src/ts/commandline/lists.ts

@@ -297,7 +297,11 @@ export const commands: CommandsSubgroup = {
             Notifications.add("Copied to clipboard", 1);
           })
           .catch((e: unknown) => {
-            Notifications.add("Failed to copy to clipboard: " + e, -1);
+            const message = Misc.createErrorMessage(
+              e,
+              "Failed to copy to clipboard"
+            );
+            Notifications.add(message, -1);
           });
       },
     },

frontend/src/ts/controllers/challenge-controller.ts

@@ -264,7 +264,9 @@ export async function setup(challengeName: string): Promise<boolean> {
       UpdateConfig.setDifficulty("normal", true);
     } else if (challenge.type === "script") {
       Loader.show();
-      const response = await fetch("/challenges/" + challenge.parameters[0]);
+      const response = await fetch(
+        "/challenges/" + (challenge.parameters[0] as string)
+      );
       Loader.hide();
       if (response.status !== 200) {
         throw new Error(`${response.status} ${response.statusText}`);

frontend/src/ts/controllers/input-controller.ts

@@ -637,7 +637,7 @@ async function handleChar(
     if (charIndex >= currCorrectedTestInputLength) {
       TestInput.corrected.current += !isCharKorean
         ? char
-        : Hangul.disassemble(char).concat();
+        : Hangul.disassemble(char).concat().join("");
     } else if (!thisCharCorrect) {
       TestInput.corrected.current =
         TestInput.corrected.current.substring(0, charIndex) +

frontend/src/ts/pages/settings.ts

@@ -1199,7 +1199,8 @@ $(".pageSettings .section .groupTitle button").on("click", (e) => {
       Notifications.add("Link copied to clipboard", 1);
     })
     .catch((e: unknown) => {
-      Notifications.add("Failed to copy to clipboard: " + e, -1);
+      const msg = Misc.createErrorMessage(e, "Failed to copy to clipboard");
+      Notifications.add(msg, -1);
     });
 });
 

frontend/src/ts/test/test-config.ts

@@ -238,7 +238,7 @@ function updateActiveExtraButtons(key: string, value: ConfigValue): void {
     $("#testConfig .time .textButton").removeClass("active");
     const timeCustom = ![15, 30, 60, 120].includes(value as number)
       ? "custom"
-      : value;
+      : (value as number);
     $(
       "#testConfig .time .textButton[timeConfig='" + timeCustom + "']"
     ).addClass("active");
@@ -247,7 +247,7 @@ function updateActiveExtraButtons(key: string, value: ConfigValue): void {
 
     const wordCustom = ![10, 25, 50, 100, 200].includes(value as number)
       ? "custom"
-      : value;
+      : (value as number);
 
     $(
       "#testConfig .wordCount .textButton[wordCount='" + wordCustom + "']"

frontend/src/ts/test/test-ui.ts

@@ -65,7 +65,7 @@ ConfigEvent.subscribe((eventKey, eventValue, nosave) => {
   if (eventKey === "fontSize") {
     $("#caret, #paceCaret, #liveStatsMini, #typingTest, #wordsInput").css(
       "fontSize",
-      eventValue + "rem"
+      (eventValue as number) + "rem"
     );
     if (!nosave) {
       OutOfFocus.hide();
@@ -1688,7 +1688,8 @@ async function copyToClipboard(content: string): Promise<void> {
       duration: 2,
     });
   } catch (e) {
-    Notifications.add("Could not copy to clipboard: " + e, -1);
+    const msg = Misc.createErrorMessage(e, "Could not copy to clipboard");
+    Notifications.add(msg, -1);
   }
 }
 

packages/eslint-config/index.js

@@ -120,13 +120,6 @@ module.exports = {
             allowArray: true,
           },
         ],
-        //162, 31 when allowing numbers and strings, kinda related to restrict-template-expressions
-        "@typescript-eslint/restrict-plus-operands": [
-          "off",
-          {
-            allowNumberAndString: true,
-          },
-        ],
 
         //using
         "@typescript-eslint/no-unsafe-member-access": "error",
@@ -170,6 +163,12 @@ module.exports = {
         "@typescript-eslint/use-unknown-in-catch-callback-variable": "error",
         "@typescript-eslint/await-thenable": "error",
         "@typescript-eslint/no-unnecessary-type-arguments": "error",
+        "@typescript-eslint/restrict-plus-operands": [
+          "error",
+          {
+            allowNumberAndString: true,
+          },
+        ],
 
         //handled by oxlint
         "@typescript-eslint/no-non-null-assertion": "off",
@@ -179,7 +178,7 @@ module.exports = {
         "@typescript-eslint/no-unused-expressions": "off",
         "@typescript-eslint/no-empty-function": "off",
         "no-empty": "off",
-        "@typescript-eslint/only-throw-error": "off",
+        "@typescript-eslint/only-throw-error": "error",
         "@typescript-eslint/ban-ts-comment": "off",
         "@typescript-eslint/no-unsafe-function-type": "off",
         "@typescript-eslint/consistent-type-definitions": "off",

packages/funbox/src/list.ts

@@ -480,7 +480,9 @@ export function getFunbox(
 
     //@ts-expect-error sanity check
     if (out.includes(undefined)) {
-      throw new Error("One of the funboxes is invalid: " + nameOrNames);
+      throw new Error(
+        "One of the funboxes is invalid: " + nameOrNames.toString()
+      );
     }
 
     return out;