/**
 * Given an absolute file path, determine the name of its
 * ts built-in library
 *
 * @param fileName absolute path to a source file
 *
 * @example
 * ```ts
 * getTsLibName('/Users/mike/foo/bar/node_modules/typescript/lib/lib.es5.d.ts'); // 'lib.es5.d.ts'
 * getTsLibName('/Users/mike/foo/bar/index.ts'); // undefined
 * ```
 * @public
 */
export declare function getTsLibName(fileName: string): string | undefined;
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