chore: remove stuff identified by knip as unused (#12815)

* chore: remove stuff identified by knip as unused

* need to continue exporting Parser, it is referenced as a type

packages/svelte/package.json

@@ -150,7 +150,9 @@
       "src/*/index.js",
       "src/index-client.ts",
       "src/index-server.ts",
-      "src/index.d.ts"
+      "src/index.d.ts",
+      "tests/**/*.js",
+      "tests/**/*.ts"
     ],
     "project": [
       "src/**"

packages/svelte/scripts/process-messages/templates/compile-errors.js

@@ -2,7 +2,7 @@ import { CompileDiagnostic } from './utils/compile_diagnostic.js';
 
 /** @typedef {{ start?: number, end?: number }} NodeLike */
 
-export class InternalCompileError extends CompileDiagnostic {
+class InternalCompileError extends CompileDiagnostic {
 	name = 'CompileError';
 
 	/**

packages/svelte/scripts/process-messages/templates/compile-warnings.js

@@ -3,7 +3,7 @@ import { CompileDiagnostic } from './utils/compile_diagnostic.js';
 
 /** @typedef {{ start?: number, end?: number }} NodeLike */
 
-export class InternalCompileWarning extends CompileDiagnostic {
+class InternalCompileWarning extends CompileDiagnostic {
 	name = 'CompileWarning';
 
 	/**

packages/svelte/src/compiler/errors.js

@@ -3,7 +3,7 @@
 import { CompileDiagnostic } from './utils/compile_diagnostic.js';
 
 /** @typedef {{ start?: number, end?: number }} NodeLike */
-export class InternalCompileError extends CompileDiagnostic {
+class InternalCompileError extends CompileDiagnostic {
 	name = 'CompileError';
 
 	/**

packages/svelte/src/compiler/phases/3-transform/client/visitors/AssignmentExpression.js

@@ -21,7 +21,7 @@ export function AssignmentExpression(node, context) {
  * @param {Context} context
  * @returns {Expression | null}
  */
-export function build_assignment(operator, left, right, context) {
+function build_assignment(operator, left, right, context) {
 	// Handle class private/public state assignment cases
 	if (
 		context.state.analysis.runes &&

packages/svelte/src/compiler/utils/assert.js

@@ -1,12 +1,3 @@
-/**
- * @template T
- * @param {T} value
- * @returns {asserts value is NonNullable<T>}
- */
-export function ok(value) {
-	if (!value) throw new Error('Assertion failed');
-}
-
 /**
  * @template T
  * @param {any} actual

packages/svelte/src/compiler/warnings.js

@@ -10,7 +10,7 @@ import {
 import { CompileDiagnostic } from './utils/compile_diagnostic.js';
 
 /** @typedef {{ start?: number, end?: number }} NodeLike */
-export class InternalCompileWarning extends CompileDiagnostic {
+class InternalCompileWarning extends CompileDiagnostic {
 	name = 'CompileWarning';
 
 	/**

packages/svelte/src/internal/client/reactivity/deriveds.js

@@ -14,8 +14,6 @@ import {
 import { equals, safe_equals } from './equality.js';
 import * as e from '../errors.js';
 
-export let updating_derived = false;
-
 /**
  * @template V
  * @param {() => V} fn
@@ -101,11 +99,8 @@ export function update_derived(derived) {
 		stack.push(derived);
 	}
 
-	var previous_updating_derived = updating_derived;
-	updating_derived = true;
 	destroy_derived_children(derived);
 	var value = update_reaction(derived);
-	updating_derived = previous_updating_derived;
 
 	if (DEV) {
 		stack.pop();
@@ -128,7 +123,7 @@ export function update_derived(derived) {
  * @param {Derived} signal
  * @returns {void}
  */
-export function destroy_derived(signal) {
+function destroy_derived(signal) {
 	destroy_derived_children(signal);
 	remove_reactions(signal, 0);
 	set_signal_status(signal, DESTROYED);

packages/svelte/src/internal/client/reactivity/effects.js

@@ -61,7 +61,7 @@ export function validate_effect(rune) {
  * @param {Effect} effect
  * @param {Reaction} parent_effect
  */
-export function push_effect(effect, parent_effect) {
+function push_effect(effect, parent_effect) {
 	var parent_last = parent_effect.last;
 	if (parent_last === null) {
 		parent_effect.last = parent_effect.first = effect;

packages/svelte/src/internal/shared/utils.js

@@ -3,9 +3,7 @@
 export var is_array = Array.isArray;
 export var array_from = Array.from;
 export var object_keys = Object.keys;
-export var object_assign = Object.assign;
 export var is_frozen = Object.isFrozen;
-export var object_freeze = Object.freeze;
 export var define_property = Object.defineProperty;
 export var get_descriptor = Object.getOwnPropertyDescriptor;
 export var get_descriptors = Object.getOwnPropertyDescriptors;

packages/svelte/src/reactivity/utils.js

@@ -1,36 +1,6 @@
 /** @import { Source } from '#client' */
 import { set } from '../internal/client/reactivity/sources.js';
 
-/**
- * @template T
- * @template U
- * @param {Iterable<T>} iterable
- * @param {(value: T) => U} fn
- * @param {string} name
- * @returns {IterableIterator<U>}
- */
-export function map(iterable, fn, name) {
-	return {
-		[Symbol.iterator]: get_this,
-		next() {
-			for (const value of iterable) {
-				return { done: false, value: fn(value) };
-			}
-
-			return { done: true, value: undefined };
-		},
-		// @ts-expect-error
-		get [Symbol.toStringTag]() {
-			return name;
-		}
-	};
-}
-
-/** @this {any} */
-function get_this() {
-	return this;
-}
-
 /** @param {Source<number>} source */
 export function increment(source) {
 	set(source, source.v + 1);

packages/svelte/src/utils.js

@@ -107,7 +107,7 @@ export function is_capture_event(name) {
 }
 
 /** List of Element events that will be delegated */
-export const DELEGATED_EVENTS = [
+const DELEGATED_EVENTS = [
 	'beforeinput',
 	'click',
 	'change',
@@ -144,7 +144,7 @@ export function is_delegated(event_name) {
 /**
  * Attributes that are boolean, i.e. they are present or not present.
  */
-export const DOM_BOOLEAN_ATTRIBUTES = [
+const DOM_BOOLEAN_ATTRIBUTES = [
 	'allowfullscreen',
 	'async',
 	'autofocus',