svelte/src/interfaces.ts

export interface Node {
	start: number;
	end: number;
	type: string;
	[propName: string]: any;
}

export interface Parser {
	readonly template: string;
	readonly filename?: string;

	index: number;
	stack: Array<Node>;

	html: Node;
	css: Node;
	js: Node;
	metaTags: {};
}

export interface Ast {
	html: Node;
	css: Node;
	js: Node;
}

export interface Warning {
	start?: { line: number; column: number; pos?: number };
	end?: { line: number; column: number; };
	pos?: number;
	code: string;
	message: string;
	filename?: string;
	frame?: string;
	toString: () => string;
}

export type ModuleFormat = 'es' | 'amd' | 'cjs' | 'iife' | 'umd' | 'eval';

export interface CompileOptions {
	format?: ModuleFormat;
	name?: string;
	filename?: string;
	generate?: string | false;
	globals?: ((id: string) => string) | object;
	amd?: {
		id?: string;
	};

	outputFilename?: string;
	cssOutputFilename?: string;

	dev?: boolean;
	immutable?: boolean;
	shared?: boolean | string;
	hydratable?: boolean;
	legacy?: boolean;
	customElement?: CustomElementOptions | true;
	css?: boolean;

	preserveComments?: boolean | false;

	onwarn?: (warning: Warning) => void;

	// to remove in v3
	onerror?: (error: Error) => void;
	skipIntroByDefault?: boolean;
	nestedTransitions?: boolean;
}

export interface ShorthandImport {
	name: string;
	source: string;
};

export interface Visitor {
	enter: (node: Node) => void;
	leave?: (node: Node) => void;
}

export interface CustomElementOptions {
	tag?: string;
	props?: string[];
}

export interface AppendTarget {
	slots: Record<string, string>;
	slotStack: string[]
}