/**
 * State object
 * @typedef {Object} ImageState
 * @property data - the result of the image operation
 * @property references - an array of all previous data objects used in the Job
 * @private
 **/
/**
 * Resize an image to the given dimensions.
 * Writes `{ buffer, width, height }` to `state.data`.
 * @public
 * @example
 * resize($.data.photoBase64, { width: 1200, height: 1600 })
 * @function
 * @param {string|Buffer|Function} base64ImgOrBuffer - Base64 string, data URL, Buffer, or resolver fn
 * @param {object} [options={}]
 * @param {number} [options.width] - Output width in pixels
 * @param {number} [options.height] - Output height in pixels
 * @param {'buffer'|'base64'} [options.parseAs='buffer'] - Return format: `'buffer'` (default) or `'base64'`
 * @state {ImageState}
 * @returns {Operation}
 */
export function resize(base64ImgOrBuffer: string | Buffer | Function, options?: {
    width?: number;
    height?: number;
    parseAs?: 'buffer' | 'base64';
}): Operation;
/**
 * Compress an image by reducing image quality until it reaches the criteria.
 * Writes `{ buffer, size, quality }` to `state.data`.
 * @public
 * @example
 * compress(state.data.buffer, { maxBytes: 700 * 1024, minQuality: 20 })
 * @function
 * @param {string|Buffer|Function} base64ImgOrBuffer - Base64 string, data URL, Buffer, or resolver fn
 * @param {object} [options={}]
 * @param {number} [options.maxBytes=716800] - Maximum output file size in bytes
 * @param {number} [options.minQuality=20] - JPEG quality floor (1–100); compression stops here even if maxBytes is not met
 * @param {'buffer'|'base64'} [options.parseAs='buffer'] - Return format: `'buffer'` (default) or `'base64'`
 * @state {ImageState}
 * @returns {Operation}
 */
export function compress(base64ImgOrBuffer: string | Buffer | Function, options?: {
    maxBytes?: number;
    minQuality?: number;
    parseAs?: 'buffer' | 'base64';
}): Operation;
/**
 * Strip all EXIF metadata from an image. Output is always a JPEG buffer.
 * Writes `{ buffer }` to `state.data`.
 * @public
 * @example
 * stripMetadata($.data.photoBase64)
 * @function
 * @param {string|Buffer|Function} base64ImgOrBuffer - Base64 string, data URL, Buffer, or resolver fn
 * @param {object} [options={}]
 * @param {'buffer'|'base64'} [options.parseAs='buffer'] - Return format: `'buffer'` (default) or `'base64'`
 * @state {ImageState}
 * @returns {Operation}
 */
export function stripMetadata(base64ImgOrBuffer: string | Buffer | Function, options?: {
    parseAs?: 'buffer' | 'base64';
}): Operation;
/**
 * Embed EXIF metadata into a JPEG image.
 * Writes `{ buffer }` to `state.data`.
 * @public
 * @example
 * embedMetadata($.data.buffer, { UserComment: 'patient-id=42' })
 * embedMetadata($.data.buffer, { UserComment: 'patient-id=42', Make: 'OpenFn' }, { parseAs: 'base64' })
 * @function
 * @param {string|Buffer|Function} base64ImgOrBuffer - Base64 string, data URL, Buffer, or resolver fn
 * @param {object} exifObj - EXIF key-value pairs; keys must be valid EXIF tag names (e.g. UserComment, Make, Model)
 * @param {object} [options={}]
 * @param {'buffer'|'base64'} [options.parseAs='buffer'] - Return format: `'buffer'` (default) or `'base64'`
 * @state {ImageState}
 * @returns {Operation}
 */
export function embedMetadata(base64ImgOrBuffer: string | Buffer | Function, exifObj: object, options?: {
    parseAs?: 'buffer' | 'base64';
}): Operation;
/**
 * Read image metadata without modifying the image.
 * Writes `{ width, height, orientation, size, exif }` to `state.data`.
 * `exif` is a flat object of human-readable EXIF tag names (e.g. `{ Make, Model, GPSLatitude, UserComment }`).
 * `UserComment` has the `ASCII\0\0\0` encoding prefix stripped. Images with no EXIF return `exif: {}`.
 * @public
 * @example
 * metadata($.data.photoBase64)
 * fn(state => {
 *   if (state.data.size > 700 * 1024) { ... }
 *   return state;
 * })
 * @function
 * @param {string|Buffer|Function} base64ImgOrBuffer - Base64 string, data URL, Buffer, or resolver fn
 * @state {ImageState}
 * @returns {Operation}
 */
export function metadata(base64ImgOrBuffer: string | Buffer | Function): Operation;
/**
 * State object
 */
export type ImageState = {
    /**
     * - the result of the image operation
     */
    data: any;
    /**
     * - an array of all previous data objects used in the Job
     */
    references: any;
};
export { as, combine, cursor, dataPath, dataValue, dateFns, each, field, fields, fn, fnIf, group, lastReferenceValue, map, merge, scrubEmojis, sourceValue, util, http } from "@openfn/language-common";