chore: use context.sourceCode instead of compat

As of 3.x, we only support `8.57.1` and `>=9.0.0` of ESLint.

Both of these have `context.sourceCode` available, so we should no
longer need the `getSourceCode` compat helper.

The helper does polyfill some missing methods but `8.57.1` seems to have
all of those already.

Author: 43081j

packages/eslint-plugin-svelte/src/rules/@typescript-eslint/no-unnecessary-condition.ts

@@ -22,7 +22,6 @@ import {
 	isTupleType
 } from '../../utils/ts-utils/index.js';
 import type { TS, TSTools } from '../../utils/ts-utils/index.js';
-import { getSourceCode } from '../../utils/compat.js';
 
 /**
  * Returns all types of a union type or an array containing `type` itself if it's no union type.
@@ -157,7 +156,7 @@ export default createRule('@typescript-eslint/no-unnecessary-condition', {
 
 		const { service, ts } = tools;
 		const checker = service.program.getTypeChecker();
-		const sourceCode = getSourceCode(context);
+		const sourceCode = context.sourceCode;
 		const compilerOptions = service.program.getCompilerOptions();
 		const isStrictNullChecks = compilerOptions.strict
 			? compilerOptions.strictNullChecks !== false

packages/eslint-plugin-svelte/src/rules/block-lang.ts

@@ -1,7 +1,6 @@
 import { createRule } from '../utils/index.js';
 import { findAttribute, getLangValue } from '../utils/ast-utils.js';
 import type { SvelteScriptElement, SvelteStyleElement } from 'svelte-eslint-parser/lib/ast';
-import { getSourceCode } from '../utils/compat.js';
 import type { SuggestionReportDescriptor, SourceCode } from '../types.js';
 
 export default createRule('block-lang', {
@@ -59,7 +58,7 @@ export default createRule('block-lang', {
 		hasSuggestions: true
 	},
 	create(context) {
-		if (!getSourceCode(context).parserServices.isSvelte) {
+		if (!context.sourceCode.parserServices.isSvelte) {
 			return {};
 		}
 		const enforceScriptPresent: boolean = context.options[0]?.enforceScriptPresent ?? false;
@@ -91,7 +90,7 @@ export default createRule('block-lang', {
 						message: `The <script> block should be present and its lang attribute should be ${prettyPrintLangs(
 							allowedScriptLangs
 						)}.`,
-						suggest: buildAddLangSuggestions(allowedScriptLangs, 'script', getSourceCode(context))
+						suggest: buildAddLangSuggestions(allowedScriptLangs, 'script', context.sourceCode)
 					});
 				}
 				for (const scriptNode of scriptNodes) {
@@ -106,7 +105,7 @@ export default createRule('block-lang', {
 					}
 				}
 				if (styleNodes.length === 0 && enforceStylePresent) {
-					const sourceCode = getSourceCode(context);
+					const sourceCode = context.sourceCode;
 					context.report({
 						loc: { line: 1, column: 1 },
 						message: `The <style> block should be present and its lang attribute should be ${prettyPrintLangs(

packages/eslint-plugin-svelte/src/rules/comment-directive.ts

@@ -2,7 +2,7 @@ import type { AST } from 'svelte-eslint-parser';
 import { getShared } from '../shared/index.js';
 import type { CommentDirectives } from '../shared/comment-directives.js';
 import { createRule } from '../utils/index.js';
-import { getFilename, getSourceCode } from '../utils/compat.js';
+import { getFilename } from '../utils/compat.js';
 
 type RuleAndLocation = {
 	ruleId: string;
@@ -63,7 +63,7 @@ export default createRule('comment-directive', {
 			reportUnusedDisableDirectives
 		});
 
-		const sourceCode = getSourceCode(context);
+		const sourceCode = context.sourceCode;
 
 		/**
 		 * Parse a given comment.

packages/eslint-plugin-svelte/src/rules/consistent-selector-style.ts

@@ -7,7 +7,6 @@ import type {
 	Tag as SelectorTag
 } from 'postcss-selector-parser';
 import { findClassesInAttribute } from '../utils/ast-utils.js';
-import { getSourceCode } from '../utils/compat.js';
 import { createRule } from '../utils/index.js';
 
 export default createRule('consistent-selector-style', {
@@ -48,7 +47,7 @@ export default createRule('consistent-selector-style', {
 		type: 'suggestion'
 	},
 	create(context) {
-		const sourceCode = getSourceCode(context);
+		const sourceCode = context.sourceCode;
 		if (
 			!sourceCode.parserServices.isSvelte ||
 			sourceCode.parserServices.getStyleSelectorAST === undefined ||

packages/eslint-plugin-svelte/src/rules/first-attribute-linebreak.ts

@@ -1,6 +1,5 @@
 import type { AST } from 'svelte-eslint-parser';
 import { createRule } from '../utils/index.js';
-import { getSourceCode } from '../utils/compat.js';
 
 export default createRule('first-attribute-linebreak', {
 	meta: {
@@ -30,7 +29,7 @@ export default createRule('first-attribute-linebreak', {
 	create(context) {
 		const multiline: 'below' | 'beside' = context.options[0]?.multiline || 'below';
 		const singleline: 'below' | 'beside' = context.options[0]?.singleline || 'beside';
-		const sourceCode = getSourceCode(context);
+		const sourceCode = context.sourceCode;
 
 		/**
 		 * Report attribute

packages/eslint-plugin-svelte/src/rules/html-closing-bracket-new-line.ts

@@ -1,6 +1,5 @@
 import type { AST } from 'svelte-eslint-parser';
 import { createRule } from '../utils/index.js';
-import { getSourceCode } from '../utils/compat.js';
 import type { SourceCode } from '../types.js';
 
 type ExpectedNode = AST.SvelteStartTag | AST.SvelteEndTag;
@@ -123,7 +122,7 @@ export default createRule('html-closing-bracket-new-line', {
 		options.singleline ??= 'never';
 		options.multiline ??= 'always';
 
-		const sourceCode = getSourceCode(context);
+		const sourceCode = context.sourceCode;
 
 		return {
 			'SvelteStartTag, SvelteEndTag'(node: ExpectedNode) {

packages/eslint-plugin-svelte/src/rules/html-closing-bracket-spacing.ts

@@ -40,7 +40,7 @@ export default createRule('html-closing-bracket-spacing', {
 			selfClosingTag: 'always',
 			...ctx.options[0]
 		};
-		const src = ctx.getSourceCode();
+		const src = ctx.sourceCode;
 
 		/**
 		 * Returns true if string contains newline characters

packages/eslint-plugin-svelte/src/rules/html-quotes.ts

@@ -3,7 +3,6 @@ import { createRule } from '../utils/index.js';
 import type { QuoteAndRange } from '../utils/ast-utils.js';
 import { getMustacheTokens } from '../utils/ast-utils.js';
 import { getAttributeValueQuoteAndRange } from '../utils/ast-utils.js';
-import { getSourceCode } from '../utils/compat.js';
 
 const QUOTE_CHARS = {
 	double: '"',
@@ -49,7 +48,7 @@ export default createRule('html-quotes', {
 		type: 'layout' // "problem",
 	},
 	create(context) {
-		const sourceCode = getSourceCode(context);
+		const sourceCode = context.sourceCode;
 		const preferQuote: 'double' | 'single' = context.options[0]?.prefer ?? 'double';
 		const dynamicQuote = context.options[0]?.dynamic?.quoted ? preferQuote : 'unquoted';
 		const avoidInvalidUnquotedInHTML = Boolean(

packages/eslint-plugin-svelte/src/rules/html-self-closing.ts

@@ -6,7 +6,6 @@ import {
 	isSvgElement,
 	isMathMLElement
 } from '../utils/ast-utils.js';
-import { getSourceCode } from '../utils/compat.js';
 
 const TYPE_MESSAGES = {
 	normal: 'HTML elements',
@@ -160,7 +159,7 @@ export default createRule('html-self-closing', {
 			context.report({
 				node,
 				loc: {
-					start: getSourceCode(context).getLocFromIndex(
+					start: context.sourceCode.getLocFromIndex(
 						node.startTag.range[1] - (node.startTag.selfClosing ? 2 : 1)
 					),
 					end: node.loc.end

packages/eslint-plugin-svelte/src/rules/indent-helpers/index.ts

@@ -8,7 +8,7 @@ import { isCommentToken } from '@eslint-community/eslint-utils';
 import type { AnyToken, IndentOptions } from './commons.js';
 import type { OffsetCalculator } from './offset-context.js';
 import { OffsetContext } from './offset-context.js';
-import { getFilename, getSourceCode } from '../../utils/compat.js';
+import { getFilename } from '../../utils/compat.js';
 
 type IndentUserOptions = {
 	indent?: number | 'tab';
@@ -81,7 +81,7 @@ export function defineVisitor(
 	if (!getFilename(context).endsWith('.svelte')) return {};
 
 	const options = parseOptions(context.options[0] || {}, defaultOptions);
-	const sourceCode = getSourceCode(context);
+	const sourceCode = context.sourceCode;
 	const offsets = new OffsetContext({ sourceCode, options });
 
 	/**