/**
 * The `style` attribute as a string, never through CSSOM.
 *
 * `element.style` is a browser luxury: the Node exporters parse with
 * @xmldom/xmldom (pdf) and linkedom (pptx, html text), whose Elements carry no
 * `CSSStyleDeclaration` or only part of one. Code that reads or writes a
 * declaration through it therefore works in the editor and silently does
 * NOTHING in an export.
 *
 * The build format mirrors what a browser's CSSOM serializes (`a: b;` joined by
 * a space), so markup that used to be written through `element.style` keeps the
 * same shape. VALUES are written as authored: CSSOM normalizes a colour to
 * `rgb(…)` and the three DOM implementations disagree about when, so matching
 * that is chasing a target rather than defining one.
 */
export declare function parseStyleAttribute(style: string | null | undefined): Record<string, string>;
export declare function buildStyleAttribute(style: Record<string, string>): string;
/** A declaration value without its `!important`, which is a priority, not paint. */
export declare const stripPriority: (value: string) => string;
/**
 * Set one declaration on `el`, or drop it when `value` is null. Declarations the
 * caller did not name survive, in their original order.
 */
export declare function setStyleDeclaration(el: Element, prop: string, value: string | null): void;