export type TextBaseline = "top" | "bottom" | "middle" | "alphabetic" | "hanging";
export type TextFontWeight = "light" | "normal" | "mediumBold" | "bold" | "extraBold";
export interface TextStyle {
    readonly type: "TextStyle";
    readonly fontFamily?: string;
    readonly light?: boolean;
    readonly normal?: boolean;
    readonly bold?: boolean;
    readonly mediumBold?: boolean;
    readonly extraBold?: boolean;
    readonly fontWeight?: TextFontWeight;
    readonly color?: string;
    readonly fontSize?: number;
    readonly fontScale?: number;
    readonly italic?: boolean;
    readonly subScript?: boolean;
    readonly superScript?: boolean;
    readonly underline?: boolean;
    readonly verticalPosition?: number;
    readonly indent?: number;
    readonly lineGap?: number;
    readonly lineBreak?: boolean;
    readonly baseline?: TextBaseline;
    readonly strike?: boolean;
    readonly opacity?: number;
    readonly characterSpacing?: number;
}
export interface TextStyleProps {
    readonly fontFamily?: string;
    readonly light?: boolean;
    readonly normal?: boolean;
    readonly bold?: boolean;
    readonly mediumBold?: boolean;
    readonly extraBold?: boolean;
    readonly fontWeight?: TextFontWeight;
    readonly color?: string;
    readonly fontSize?: number;
    readonly fontScale?: number;
    readonly italic?: boolean;
    readonly subScript?: boolean;
    readonly superScript?: boolean;
    readonly underline?: boolean;
    readonly verticalPosition?: number;
    readonly indent?: number;
    readonly lineGap?: number;
    readonly lineBreak?: boolean;
    readonly baseline?: TextBaseline;
    readonly strike?: boolean;
    readonly opacity?: number;
    readonly characterSpacing?: number;
}
export declare function create(props?: TextStyleProps): TextStyle;
export declare function overrideWith(overrider: TextStyle | undefined, toOverride: TextStyle | undefined): TextStyle;
export declare function calculateFontSize(textStyle: TextStyle | undefined, defaultFontSize: number): number;
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