/**
 * Sanitizes the SVG element and all its child nodes.
 * Does not allow `<script>` elements, or any attributes that start with `on`, such as `onclick`.
 */
export declare const isValid: (elm: HTMLElement) => boolean;
/**
 * Validates the SVG content by checking that it has only one root element `<svg>`,
 * adding the `color-immutable` class if the `colorImmutable` option is set to `true`,
 * and sanitizing the provided content as long as the `sanitize` property is not explicitly set to `false`.
 */
export declare const validateContent: (svgContent: string, sanitize?: boolean, colorImmutable?: boolean) => string;
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