NativeScript/packages/core/ui/styling/font.d.ts

export class Font {
	public static default: Font;

	public fontFamily: string;
	public fontStyle: FontStyle;
	public fontWeight: FontWeight;
	public fontSize: number;

	public isBold: boolean;
	public isItalic: boolean;

	constructor(family: string, size: number, style: FontStyle, weight: FontWeight);

	public getAndroidTypeface(): any /* android.graphics.Typeface */;
	public getUIFont(defaultFont: any /* UIFont */): any /* UIFont */;

	public withFontFamily(family: string): Font;
	public withFontStyle(style: string): Font;
	public withFontWeight(weight: string): Font;
	public withFontSize(size: number): Font;

	public static equals(value1: Font, value2: Font): boolean;
}

export type FontStyle = 'normal' | 'italic';
export namespace FontStyle {
	export const NORMAL: 'normal';
	export const ITALIC: 'italic';
	export function isValid(value: any): boolean;
	export function parse(value: string): FontStyle;
}

export type FontWeight = '100' | '200' | '300' | 'normal' | '400' | '500' | '600' | 'bold' | '700' | '800' | '900';
export namespace FontWeight {
	export const THIN: '100';
	export const EXTRA_LIGHT: '200';
	export const LIGHT: '300';
	export const NORMAL: 'normal';
	export const MEDIUM: '500';
	export const SEMI_BOLD: '600';
	export const BOLD: 'bold';
	export const EXTRA_BOLD: '800';
	export const BLACK: '900';
	export function isValid(value: any): boolean;
	export function parse(value: string): FontWeight;
}

export interface ParsedFont {
	fontStyle?: FontStyle;
	fontVariant?: string;
	fontWeight?: FontWeight;
	lineHeight?: string;
	fontSize?: string;
	fontFamily?: string;
}

export function parseFont(fontValue: string): ParsedFont;

export namespace ios {
	export function registerFont(fontFile: string);
}