import ts from 'typescript';
/**
 * Resolve the TypeScript parser mode from a source filename.
 *
 * Unknown extensions retain the adapter's historically permissive TSX mode,
 * while known TypeScript/JavaScript extensions use their exact grammar.
 */
export declare function scriptKindForFilePath(filePath: string): ts.ScriptKind;
/**
 * Parse TypeScript/JavaScript source into a SourceFile.
 * Returns null on parse failure.
 */
export declare function parseSource(content: string, filePath: string): ts.SourceFile | null;
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