/**
 * Source edits that more than one init step needs to make.
 *
 * Inserting an import looks trivial until the file is in CRLF: a raw `\n`
 * produces mixed endings, makes git mark the whole file as changed, and — when
 * the expression that finds the imports forgets the `\r` — welds the new line
 * onto the end of the previous one.
 */
/** The line ending the file already uses. */
export declare function lineEndingOf(content: string): string;
/**
 * Inserts an import line just after the file's last import.
 *
 * Returns the content untouched when the import is already there, so calling it
 * twice is the same as calling it once.
 */
export declare function withImport(content: string, importLine: string): string;
/** Where an array literal starts and ends, as indices into the content. */
export interface ArrayRange {
    /** Index of the opening `[`. */
    readonly open: number;
    /** Index of the closing `]`. */
    readonly close: number;
    /** What sits between the two, without the brackets. */
    readonly body: string;
}
/**
 * The range of the array assigned to `key`, found by counting brackets.
 *
 * A regular expression stops at the first `]` it sees, and in real code that `]`
 * is usually a nested array's — `withInterceptors([...])` inside `providers`, a
 * plugin with options inside `plugins`. Anything inserted there landed in the
 * wrong array, and the build broke with a type error that mentions ZardUI
 * nowhere.
 *
 * Strings and comments are skipped, so a `]` written inside one does not count
 * as a closing bracket.
 */
export declare function arrayRange(content: string, key: string): ArrayRange | null;
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