/**
 * Plain text VERSION file provider.
 *
 * @packageDocumentation
 */
import type { VersionSourceProvider } from './provider';
/**
 * Reads and writes version strings from a plain text VERSION file.
 *
 * @remarks
 * The file is expected to contain only the version string, optionally
 * followed by a trailing newline. Binary files and empty files are
 * rejected with a descriptive error.
 *
 * @public
 * @since 0.3.0
 */
export declare class VersionFileSource implements VersionSourceProvider {
    /** Human-readable provider name. */
    readonly name: string;
    /** Filename of the version file (e.g. `'VERSION'`). */
    readonly manifestFile: string;
    /**
     * Creates a new plain text version file source.
     *
     * @param manifestFile - Version filename.
     */
    constructor(manifestFile?: string);
    /**
     * Returns `true` when the version file exists in `cwd`.
     *
     * @param cwd - Project directory to check.
     * @returns Whether the version file exists.
     */
    exists(cwd: string): boolean;
    /**
     * Reads the version string from the plain text version file.
     *
     * @param cwd - Project directory containing the version file.
     * @returns The version string from the first line of the file.
     */
    getVersion(cwd: string): string;
    /**
     * Writes a version string to the plain text version file.
     *
     * @param version - Version string to write.
     * @param cwd - Project directory containing the version file.
     */
    setVersion(version: string, cwd: string): void;
}
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