[F] Fix settings stroage

src/routes/song/[slug]/+page.svelte

@@ -7,7 +7,8 @@
   import { isKana, isKanji, toHiragana, toKatakana } from "wanakana";
   import { composeList, fuzzyEquals } from "./IMEHelper.ts";
   import MenuItem from "../../../components/material3/MenuItem.svelte";
-  import "scope-extensions-js";
+  import "../../../shared/ext.ts"
+  import { browser } from "$app/environment";
 
   let { data }: PageProps = $props()
 
@@ -19,11 +20,12 @@
   let inp = $state("")
 
   // Settings stored in localStorage
-  let settings = $state(localStorage.getItem('kashi-dash-settings')?.let(it => JSON.parse(it)) ?? {
+  let settingDefaults = {
     isFuri: true,
     allKata: false
-  })
-  $effect(() => localStorage.setItem('kashi-dash-settings', JSON.stringify(settings)))
+  }
+  let settings = $state(browser ? (localStorage.getItem('kashi-dash-settings')?.let((it) => JSON.parse(it)) ?? settingDefaults) : settingDefaults)
+  $effect(() => { if (browser) localStorage.setItem('kashi-dash-settings', JSON.stringify(settings)) })
   const preprocessKana = (kana: string) => settings.allKata ? toKatakana(kana) : kana
 
   // Process each line into segments with swi (start word index) and kanji/kana

src/shared/ext.ts

@@ -0,0 +1,275 @@
+export {};
+
+declare global {
+    interface Object {
+        /**
+         * Calls the specified function block with `this` value as its argument and returns its result
+         * @param block - The function to be executed with `this` as argument
+         * @returns `block`'s result
+         */
+        let<T, R>(this: T | null | undefined, block: (it: T) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its argument and returns `this` value
+         * @param block - The function to be executed with `this` as argument
+         * @returns `this`
+         */
+        also<T>(this: T | null | undefined, block: (it: T) => void): T;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns its value
+         * @param block - The function to be executed with `this` as context
+         * @returns `block`'s result
+         */
+        run<T, R>(this: T | null | undefined, block: (this: T) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns `this` value
+         * @param block - The function to be executed with `this` as context
+         * @returns `this`
+         */
+        apply<T>(this: T | null | undefined, block: (this: T) => void): T;
+        /**
+         * Returns `this` value if it satisfies the given predicate or `undefined` if it doesn't
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeIf<T>(this: T | null | undefined, predicate: (it: T) => boolean): T | undefined;
+        /**
+         * Returns `this` value if it does not satisfy the given predicate or `undefined` if it does
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeUnless<T>(this: T | null | undefined, predicate: (it: T) => boolean): T | undefined;
+    }
+    interface Number {
+        /**
+         * Calls the specified function block with `this` value as its argument and returns its result
+         * @param block - The function to be executed with `this` as argument
+         * @returns `block`'s result
+         */
+        let<R>(this: Number | null | undefined, block: (it: number) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its argument and returns `this` value
+         * @param block - The function to be executed with `this` as argument
+         * @returns `this`
+         */
+        also(this: Number | null | undefined, block: (it: number) => void): number;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns its value
+         * @param block - The function to be executed with `this` as context
+         * @returns `block`'s result
+         */
+        run<R>(this: Number | null | undefined, block: (this: number) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns `this` value
+         * @param block - The function to be executed with `this` as context
+         * @returns `this`
+         */
+        apply(this: Number | null | undefined, block: (this: number) => void): number;
+        /**
+         * Returns `this` value if it satisfies the given predicate or `undefined` if it doesn't
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeIf(this: Number | null | undefined, predicate: (it: number) => boolean): number | undefined;
+        /**
+         * Returns `this` value if it does not satisfy the given predicate or `undefined` if it does
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeUnless(this: Number | null | undefined, predicate: (it: number) => boolean): number | undefined;
+    }
+    interface String {
+        /**
+         * Calls the specified function block with `this` value as its argument and returns its result
+         * @param block - The function to be executed with `this` as argument
+         * @returns `block`'s result
+         */
+        let<R>(this: String | null | undefined, block: (it: string) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its argument and returns `this` value
+         * @param block - The function to be executed with `this` as argument
+         * @returns `this`
+         */
+        also(this: String | null | undefined, block: (it: string) => void): string;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns its value
+         * @param block - The function to be executed with `this` as context
+         * @returns `block`'s result
+         */
+        run<R>(this: String | null | undefined, block: (this: string) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns `this` value
+         * @param block - The function to be executed with `this` as context
+         * @returns `this`
+         */
+        apply(this: String | null | undefined, block: (this: string) => void): string;
+        /**
+         * Returns `this` value if it satisfies the given predicate or `undefined` if it doesn't
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeIf(this: String | null | undefined, predicate: (it: string) => boolean): string | undefined;
+        /**
+         * Returns `this` value if it does not satisfy the given predicate or `undefined` if it does
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeUnless(this: String | null | undefined, predicate: (it: string) => boolean): string | undefined;
+    }
+    interface Boolean {
+        /**
+         * Calls the specified function block with `this` value as its argument and returns its result
+         * @param block - The function to be executed with `this` as argument
+         * @returns `block`'s result
+         */
+        let<R>(this: Boolean | null | undefined, block: (it: boolean) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its argument and returns `this` value
+         * @param block - The function to be executed with `this` as argument
+         * @returns `this`
+         */
+        also(this: Boolean | null | undefined, block: (it: boolean) => void): boolean;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns its value
+         * @param block - The function to be executed with `this` as context
+         * @returns `block`'s result
+         */
+        run<R>(this: Boolean | null | undefined, block: (this: boolean) => R): R;
+        /**
+         * Calls the specified function block with `this` value as its receiver and returns `this` value
+         * @param block - The function to be executed with `this` as context
+         * @returns `this`
+         */
+        apply(this: Boolean | null | undefined, block: (this: boolean) => void): boolean;
+        /**
+         * Returns `this` value if it satisfies the given predicate or `undefined` if it doesn't
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeIf(this: Boolean | null | undefined, predicate?: (it: boolean) => boolean): boolean | undefined;
+        /**
+         * Returns `this` value if it does not satisfy the given predicate or `undefined` if it does
+         * @param predicate - The function to be executed with `this` as argument and returns a truthy or falsy value
+         * @returns `this` or `undefined`
+         */
+        takeUnless(this: Boolean | null | undefined, predicate?: (it: boolean) => boolean): boolean | undefined;
+    }
+}
+
+Object.prototype.let = function(this, block) {
+    return block(this!);
+}
+
+Object.prototype.also = function(this, block) {
+    block(this!);
+    return this!;
+}
+
+Object.prototype.run = function(this, block) {
+    return block.call(this!);
+}
+
+Object.prototype.apply = function(this, block) {
+    block.call(this!);
+    return this!;
+}
+
+Object.prototype.takeIf = function(this, predicate) {
+    return predicate(this!) ? this! : undefined;
+}
+
+Object.prototype.takeUnless = function(this, predicate) {
+    return predicate(this!) ? undefined : this!;
+}
+
+Number.prototype.let = function(this, block) {
+    return block(this!.valueOf());
+}
+
+Number.prototype.also = function(this, block) {
+    block(this!.valueOf());
+    return this!.valueOf();
+}
+
+Number.prototype.run = function(this, block) {
+    return block.call(this!.valueOf());
+}
+
+Number.prototype.apply = function(this, block) {
+    block.call(this!.valueOf());
+    return this!.valueOf();
+}
+
+Number.prototype.takeIf = function(this, predicate) {
+    return predicate(this!.valueOf()) ? this!.valueOf() : undefined;
+}
+
+Number.prototype.takeUnless = function(this, predicate) {
+    return predicate(this!.valueOf()) ? undefined : this!.valueOf();
+}
+
+String.prototype.let = function(this, block) {
+    return block(this!.valueOf());
+}
+
+String.prototype.also = function(this, block) {
+    block(this!.valueOf());
+    return this!.valueOf();
+}
+
+String.prototype.run = function(this, block) {
+    return block.call(this!.valueOf());
+}
+
+String.prototype.apply = function(this, block) {
+    block.call(this!.valueOf());
+    return this!.valueOf();
+}
+
+String.prototype.takeIf = function(this, predicate) {
+    return predicate(this!.valueOf()) ? this!.valueOf() : undefined;
+}
+
+String.prototype.takeUnless = function(this, predicate) {
+    return predicate(this!.valueOf()) ? undefined : this!.valueOf();
+}
+
+Boolean.prototype.let = function(this, block) {
+    return block(this!.valueOf());
+}
+
+Boolean.prototype.also = function(this, block) {
+    block(this!.valueOf());
+    return this!.valueOf();
+}
+
+Boolean.prototype.run = function(this, block) {
+    return block.call(this!.valueOf());
+}
+
+Boolean.prototype.apply = function(this, block) {
+    block.call(this!.valueOf());
+    return this!.valueOf();
+}
+
+Boolean.prototype.takeIf = function(this, predicate) {
+    return predicate && predicate(this!.valueOf()) || this!.valueOf() ? this!.valueOf() : undefined;
+}
+
+Boolean.prototype.takeUnless = function(this, predicate) {
+    return predicate && predicate(this!.valueOf()) || this!.valueOf() ? undefined : this!.valueOf();
+}
+
+// Make enumerable false to avoid for..in loops from iterating over these methods
+for (const key of [
+    "let",
+    "also",
+    "run",
+    "apply",
+    "takeIf",
+    "takeUnless"
+]) {
+    Object.defineProperty(Object.prototype, key, { enumerable: false });
+    Object.defineProperty(Number.prototype, key, { enumerable: false });
+    Object.defineProperty(String.prototype, key, { enumerable: false });
+    Object.defineProperty(Boolean.prototype, key, { enumerable: false });
+}