refactor(types): rename sourceFile to file in RuleContext and deprecate sourceFile

Author: johnsoncodehk

packages/core/index.ts

@@ -76,7 +76,12 @@ export function createLinter(
 			const rulesContext: RuleContext = typeAwareMode
 				? {
 					...ctx,
-					sourceFile: ctx.languageService.getProgram()!.getSourceFile(fileName)!,
+					get file() {
+						return ctx.languageService.getProgram()!.getSourceFile(fileName)!;
+					},
+					get sourceFile() {
+						return ctx.languageService.getProgram()!.getSourceFile(fileName)!;
+					},
 					get program() {
 						return ctx.languageService.getProgram()!;
 					},
@@ -91,7 +96,12 @@ export function createLinter(
 					get program(): ts.Program {
 						throw new Error('Not supported');
 					},
-					sourceFile: getNonBoundSourceFile(fileName),
+					get file() {
+						return getNonBoundSourceFile(fileName);
+					},
+					get sourceFile() {
+						return getNonBoundSourceFile(fileName);
+					},
 					report,
 					reportError: report,
 					reportWarning: report,

packages/types/index.ts

@@ -45,8 +45,13 @@ export interface RuleContext {
 	languageServiceHost: LanguageServiceHost;
 	languageService: LanguageService;
 	program: Program;
-	sourceFile: SourceFile;
+	file: SourceFile;
 	report(message: string, start: number, end: number, stackOffset?: number): Reporter;
+
+	/**
+	 * @deprecated Use `file` instead.
+	 */
+	sourceFile: SourceFile;
 	/**
 	 * @deprecated Use `report` instead.
 	 */