import type { ExtractorMessage, Locale } from '../types.js';
type ExtractorCodecContext = {
    locale: Locale;
};
export default interface ExtractorCodec {
    /**
     * Decode the content of a file into a list of extracted messages. This is used
     * to load existing messages from disk.
     */
    decode(content: string, context: ExtractorCodecContext): Array<ExtractorMessage>;
    /**
     * Encode a list of extracted messages into a string that can be written as
     * file content to the disk.
     */
    encode(messages: Array<ExtractorMessage>, context: ExtractorCodecContext & {
        sourceMessagesById: Map</* ID */ string, ExtractorMessage>;
    }): string;
    /**
     * Turns the content of a file into a JSON string that represents extracted
     * messages. The returned value will be passed to `JSON.parse`.
     *
     * @return E.g. `[{"id":"+YJVTi","message":"Hey!"}]`
     *
     * This is used when loading messages into your application, typically via a
     * dynamic import (e.g. `import(`../messages/${locale}.json`)`).
     *
     * If your file content is JSON and should be used as-is, you can set this to
     * an identity function.
     */
    toJSONString(content: string, context: ExtractorCodecContext): string;
}
export declare function defineCodec(factory: () => ExtractorCodec): () => ExtractorCodec;
export {};