// Type definitions for stylus 0.48.1
// Project: https://github.com/LearnBoost/stylus
// Definitions by: Maxime LUCE <https://github.com/SomaticIT>
// Definitions: https://github.com/borisyankov/DefinitelyTyped

/// <reference path="../node/node.d.ts" />

declare module Stylus {

    export interface Static {
        /**
         * Return a new `Renderer` for the given `str` and `options`.
         */
        (str: string): Renderer;
        (str: string, options: RenderOptions): Renderer;

        /**
         * Library version.
         */
        version: string;

        /**
         * Expose nodes.
         */
        nodes: NodeStatic;

        /**
         * Expose BIFs.
         */
        functions: Functions;

        /**
         * Expose utils.
         */
        utils: Utils;

        Visitor: typeof Visitor;
        Parser: typeof Parser;
        Evaluator: typeof Evaluator;
        Compiler: typeof Compiler;

        /**
         * Expose middleware.
         */
        middleware(dir: string): Middleware;

        /**
         * Convert the given `css` to `stylus` source.
         */
        convertCSS(css: string): string;

        /**
         * Render the given `str` with `options` and callback `fn(err, css)`.
         */
        render(str: string, callback: RenderCallback): void;
        render(str: string, options: RenderOptions, callback: RenderCallback): void;

        /**
         * Return a url() function with the given `options`.
         */
        url: UrlFunction;

        /**
         * Return a url() function with the given `options`.
         */
        resolver(options: any): LiteralFunction;
    }

    //#region Internal Modules

    export interface NodeStatic {
        Node: typeof Nodes.Node;
        Root: typeof Nodes.Root;
        Null: typeof Nodes.Null;
        Each: typeof Nodes.Each;
        If: typeof Nodes.If;
        Call: typeof Nodes.Call;
        UnaryOp: typeof Nodes.UnaryOp;
        BinOp: typeof Nodes.BinOp;
        Ternary: typeof Nodes.Ternary;
        Block: typeof Nodes.Block;
        Unit: typeof Nodes.Unit;
        String: typeof Nodes.String;
        HSLA: typeof Nodes.HSLA;
        RGBA: typeof Nodes.RGBA;
        Ident: typeof Nodes.Ident;
        Group: typeof Nodes.Group;
        Literal: typeof Nodes.Literal;
        Boolean: typeof Nodes.Boolean;
        Return: typeof Nodes.Return;
        Media: typeof Nodes.Media;
        QueryList: typeof Nodes.QueryList;
        Query: typeof Nodes.Query;
        QueryExpr: typeof Nodes.QueryExpr;
        Params: typeof Nodes.Params;
        Comment: typeof Nodes.Comment;
        Keyframes: typeof Nodes.Keyframes;
        Member: typeof Nodes.Member;
        Charset: typeof Nodes.Charset;
        Namespace: typeof Nodes.Namespace;
        Import: typeof Nodes.Import;
        Extend: typeof Nodes.Extend;
        Object: typeof Nodes.Object;
        Function: typeof Nodes.Function;
        Property: typeof Nodes.Property;
        Selector: typeof Nodes.Selector;
        Expression: typeof Nodes.Expression;
        Arguments: typeof Nodes.Arguments;
        Atblock: typeof Nodes.Atblock;
        Atrule: typeof Nodes.Atrule;

        true: Nodes.Boolean;
        false: Nodes.Boolean;
        null: Nodes.Null;
    }

    export interface Functions {
        /**
         * Convert the given `color` to an `HSLA` node,
         * or h,s,l,a component values.
         */
        hsla(rgba: Nodes.RGBA): Nodes.HSLA;
        hsla(hsla: Nodes.HSLA): Nodes.HSLA;
        hsla(hue: Nodes.Unit, saturation: Nodes.Unit, lightness: Nodes.Unit, alpha: Nodes.Unit): Nodes.HSLA;

        /**
         * Convert the given `color` to an `HSLA` node,
         * or h,s,l component values.
         */
        hsl(rgba: Nodes.RGBA): Nodes.HSLA;
        hsl(hsla: Nodes.HSLA): Nodes.HSLA;
        hsl(hue: Nodes.Unit, saturation: Nodes.Unit, lightness: Nodes.Unit): Nodes.HSLA;

        /**
         * Return type of `node`.
         */
        type(node: Nodes.Node): string;
        /**
         * Return type of `node`.
         */
        typeof(node: Nodes.Node): string;
        /**
         * Return type of `node`.
         */
        "type-of"(node: Nodes.Node): string;

        /**
         * Return component `name` for the given `color`.
         */
        component(color: Nodes.RGBA, name: Nodes.String): Nodes.Unit;
        component(color: Nodes.HSLA, name: Nodes.String): Nodes.Unit;

        /**
         * Return component `name` for the given `color`.
         */
        basename(path: Nodes.String): string;
        basename(path: Nodes.String, ext: Nodes.String): string;

        /**
         * Return the dirname of `path`.
         */
        dirname(path: Nodes.String): string;

        /**
         * Return the extension of `path`.
         */
        extname(path: Nodes.String): string;

        /**
         * Joins given paths
         */
        pathjoin(...paths: Nodes.String[]): string;

        /**
         * Return the red component of the given `color`,
         * or set the red component to the optional second `value` argument.
         */
        red(color: Nodes.RGBA): Nodes.Unit;
        red(color: Nodes.HSLA): Nodes.Unit;
        red(color: Nodes.RGBA, value: Nodes.Unit): Nodes.RGBA;
        red(color: Nodes.HSLA, value: Nodes.Unit): Nodes.RGBA;

        /**
         * Return the green component of the given `color`,
         * or set the green component to the optional second `value` argument.
         */
        green(color: Nodes.RGBA): Nodes.Unit;
        green(color: Nodes.HSLA): Nodes.Unit;
        green(color: Nodes.RGBA, value: Nodes.Unit): Nodes.RGBA;
        green(color: Nodes.HSLA, value: Nodes.Unit): Nodes.RGBA;

        /**
         * Return the blue component of the given `color`,
         * or set the blue component to the optional second `value` argument.
         */
        blue(color: Nodes.RGBA): Nodes.Unit;
        blue(color: Nodes.HSLA): Nodes.Unit;
        blue(color: Nodes.RGBA, value: Nodes.Unit): Nodes.RGBA;
        blue(color: Nodes.HSLA, value: Nodes.Unit): Nodes.RGBA;

        /**
         * Return the alpha component of the given `color`,
         * or set the alpha component to the optional second `value` argument.
         */
        alpha(color: Nodes.RGBA): Nodes.Unit;
        alpha(color: Nodes.HSLA): Nodes.Unit;
        alpha(color: Nodes.RGBA, value: Nodes.Unit): Nodes.RGBA;
        alpha(color: Nodes.HSLA, value: Nodes.Unit): Nodes.RGBA;

        /**
         * Return the hue component of the given `color`,
         * or set the hue component to the optional second `value` argument.
         */
        hue(color: Nodes.RGBA): Nodes.Unit;
        hue(color: Nodes.HSLA): Nodes.Unit;
        hue(color: Nodes.RGBA, value: Nodes.Unit): Nodes.RGBA;
        hue(color: Nodes.HSLA, value: Nodes.Unit): Nodes.RGBA;

        /**
         * Return the saturation component of the given `color`,
         * or set the saturation component to the optional second `value` argument.
         */
        saturation(color: Nodes.RGBA): Nodes.Unit;
        saturation(color: Nodes.HSLA): Nodes.Unit;
        saturation(color: Nodes.RGBA, value: Nodes.Unit): Nodes.RGBA;
        saturation(color: Nodes.HSLA, value: Nodes.Unit): Nodes.RGBA;

        /**
         * Return the lightness component of the given `color`,
         * or set the lightness component to the optional second `value` argument.
         */
        lightness(color: Nodes.RGBA): Nodes.Unit;
        lightness(color: Nodes.HSLA): Nodes.Unit;
        lightness(color: Nodes.RGBA, value: Nodes.Unit): Nodes.RGBA;
        lightness(color: Nodes.HSLA, value: Nodes.Unit): Nodes.RGBA;

        /**
         * Return a `RGBA` from the r,g,b,a channels.
         */
        rgba(rgba: Nodes.RGBA): Nodes.RGBA;
        rgba(hsla: Nodes.HSLA): Nodes.RGBA;
        rgba(hue: Nodes.Unit, saturation: Nodes.Unit, lightness: Nodes.Unit, alpha: Nodes.Unit): Nodes.RGBA;

        /**
         * Return a `RGBA` from the r,g,b channels.
         */
        rgb(rgba: Nodes.RGBA): Nodes.RGBA;
        rgb(hsla: Nodes.HSLA): Nodes.RGBA;
        rgb(hue: Nodes.Unit, saturation: Nodes.Unit, lightness: Nodes.Unit, alpha: Nodes.Unit): Nodes.RGBA;

        /**
         * Blend the `top` color over the `bottom`
         */
        blend(top: Nodes.RGBA): Nodes.RGBA;
        blend(top: Nodes.RGBA, bottom: Nodes.RGBA): Nodes.RGBA;
        blend(top: Nodes.RGBA, bottom: Nodes.HSLA): Nodes.RGBA;
        blend(top: Nodes.HSLA): Nodes.RGBA;
        blend(top: Nodes.HSLA, bottom: Nodes.RGBA): Nodes.RGBA;
        blend(top: Nodes.HSLA, bottom: Nodes.HSLA): Nodes.RGBA;

        /**
         * Returns the relative luminance of the given `color`,
         * see http://www.w3.org/TR/WCAG20/#relativeluminancedef
         */
        luminosity(rgba: Nodes.RGBA): Nodes.Unit;
        luminosity(rgba: Nodes.HSLA): Nodes.Unit;

        /**
         * Returns the contrast ratio object between `top` and `bottom` colors,
         * based on http://leaverou.github.io/contrast-ratio/
         * and https://github.com/LeaVerou/contrast-ratio/blob/gh-pages/color.js#L108
         */
        contrast(top: Nodes.RGBA): Nodes.Object;
        contrast(top: Nodes.RGBA, bottom: Nodes.RGBA): Nodes.Object;
        contrast(top: Nodes.RGBA, bottom: Nodes.HSLA): Nodes.Object;
        contrast(top: Nodes.HSLA): Nodes.Object;
        contrast(top: Nodes.HSLA, bottom: Nodes.RGBA): Nodes.Object;
        contrast(top: Nodes.HSLA, bottom: Nodes.HSLA): Nodes.Object;

        /**
         * Returns the transparent version of the given `top` color,
         * as if it was blend over the given `bottom` color.
         */
        transparentify(top: Nodes.RGBA): Nodes.Object;
        transparentify(top: Nodes.RGBA, bottom: Nodes.RGBA, alpha?: Nodes.Unit): Nodes.Object;
        transparentify(top: Nodes.RGBA, bottom: Nodes.HSLA, alpha?: Nodes.Unit): Nodes.Object;
        transparentify(top: Nodes.HSLA): Nodes.Object;
        transparentify(top: Nodes.HSLA, bottom: Nodes.RGBA, alpha?: Nodes.Unit): Nodes.Object;
        transparentify(top: Nodes.HSLA, bottom: Nodes.HSLA, alpha?: Nodes.Unit): Nodes.Object;

        /**
         * Convert a .json file into stylus variables or object.
         * Nested variable object keys are joined with a dash (-)
         *
         * Given this sample media-queries.json file:
         * {
         *   "small": "screen and (max-width:400px)",
         *   "tablet": {
         *     "landscape": "screen and (min-width:600px) and (orientation:landscape)",
         *     "portrait": "screen and (min-width:600px) and (orientation:portrait)"
         *   }
         * }
         */
        json(path: Nodes.String, local: Nodes.Boolean, namePrefix: Nodes.String): any;

        /**
         * Use the given `plugin`.
         */
        use(plugin: Nodes.String): void;
        use(plugin: Nodes.String, options: any): void;

        /**
         * Unquote the given `string`.
         */
        unquote(str: Nodes.String): Nodes.Literal;

        /**
         * Like `unquote` but tries to convert the given `str` to a Stylus node.
         */
        convert(str: Nodes.String): Nodes.Node;

        /**
         * Assign `type` to the given `unit` or return `unit`'s type.
         */
        unit(unit: Nodes.Unit, type: Nodes.String): Nodes.Unit;

        /**
         * Lookup variable `name` or return Null.
         */
        lookup(name: Nodes.String): Nodes.Node;

        /**
         * Set a variable `name` on current scope.
         */
        define(name: Nodes.String, expr: Nodes.Expression): Nodes.Node;

        /**
         * Perform `op` on the `left` and `right` operands.
         */
        operate(op: Nodes.String, left: Nodes.Node, right: Nodes.Node): Nodes.Node;

        /**
         * Test if `val` matches the given `pattern`.
         */
        match(pattern: Nodes.String, val: Nodes.String): Nodes.Boolean;
        match(pattern: Nodes.String, val: Nodes.Ident): Nodes.Boolean;

        /**
         * Returns substring of the given `val`.
         */
        substr(val: Nodes.String, start: Nodes.Number, length: Nodes.Number): Nodes.String;
        substr(val: Nodes.Ident, start: Nodes.Number, length: Nodes.Number): Nodes.Ident;

        /**
         * Returns string with all matches of `pattern` replaced by `replacement` in given `val`
         */
        replace(pattern: Nodes.String, replacement: Nodes.String, val: Nodes.String): Nodes.String;
        replace(pattern: Nodes.String, replacement: Nodes.String, val: Nodes.Ident): Nodes.Ident;

        /**
         * Splits the given `val` by `delim`
         */
        split(pattern: Nodes.String, val: Nodes.String): Nodes.Expression;
        split(pattern: Nodes.String, val: Nodes.Ident): Nodes.Expression;

        /**
         * Return length of the given `expr`.
         */
        length(expr: Nodes.Expression): Nodes.Unit;

        /**
         * Inspect the given `expr`.
         */
        length(...expr: Nodes.Expression[]): Nodes.Null;

        /**
         * Throw an error with the given `msg`.
         */
        error(msg: Nodes.String): void;

        /**
         * Warn with the given `msg` prefixed by "Warning: ".
         */
        warn(msg: Nodes.String): Nodes.Null;

        /**
         * Output stack trace.
         */
        trace(): Nodes.Null;

        /**
         * Push the given args to `expr`.
         */
        push(expr: Nodes.Expression, ...nodes: Nodes.Node[]): Nodes.Unit;

        /**
         * Pop a value from `expr`.
         */
        pop(expr: Nodes.Expression): Nodes.Node;

        /**
         * Unshift the given args to `expr`.
         */
        unshift(expr: Nodes.Expression, ...nodes: Nodes.Node[]): Nodes.Unit;

        /**
         * Unshift the given args to `expr`..
         */
        prepend(expr: Nodes.Expression, ...nodes: Nodes.Node[]): Nodes.Unit;

        /**
         * Shift a value from `expr`.
         */
        shift(expr: Nodes.Expression): Nodes.Node;

        /**
         * Return a `Literal` with the given `fmt`, and variable number of arguments.
         */
        s(fmt: Nodes.String, ...nodes: Nodes.Node[]): Nodes.Literal;

        /**
         * Return a `Literal` `num` converted to the provided `base`, padded to `width`
         * with zeroes (default width is 2)
         */
        "base-convert"(num: Nodes.Number, base: Nodes.Number, width: Nodes.Number): Nodes.Literal;

        /**
         * Return the opposites of the given `positions`.
         */
        "opposite-position"(positions: Nodes.Expression): Nodes.Expression;

        /**
         * Return the width and height of the given `img` path.
         */
        "image-size"(img: Nodes.String, ignoreErr: Nodes.Boolean): Nodes.Expression;

        /**
         * Return the tangent of the given `angle`.
         */
        tan(angle: Nodes.Unit): Nodes.Unit;

        /**
         * Return the tangent of the given `angle`.
         */
        math(n: Nodes.Unit, fn: Nodes.String): Nodes.Unit;

        /**
         * Return the opposites of the given `positions`.
         */
        "-math-prop"(prop: Nodes.String): Nodes.Unit;

        /**
         * Adjust HSL `color` `prop` by `amount`.
         */
        adjust(rgba: Nodes.RGBA, prop: Nodes.String, amount: Nodes.Unit): Nodes.RGBA;
        adjust(hsla: Nodes.HSLA, prop: Nodes.String, amount: Nodes.Unit): Nodes.RGBA;

        /**
         * Return a clone of the given `expr`.
         */
        clone(expr: Nodes.Expression): Nodes.Expression;

        /**
         * Add property `name` with the given `expr` to the mixin-able block.
         */
        "add-property"(name: Nodes.String, expr: Nodes.Expression): Nodes.Property;

        /**
         * Merge the object `dest` with the given args.
         */
        merge(dest: Nodes.Object, ...objs: Nodes.Object[]): Nodes.Object;

        /**
         * Merge the object `dest` with the given args.
         */
        extend(dest: Nodes.Object, ...objs: Nodes.Object[]): Nodes.Object;

        /**
         * Return the current selector or compile `sel` selector.
         */
        selector(): string;
        selector(sel: Nodes.String): string;

        /**
         * Prefix css classes in a block
         */
        "-prefix-classes"(prefix: Nodes.String, block: Nodes.Block): Nodes.Block;

        /**
         * Returns the @media string for the current block
         */
        "current-media"(): Nodes.String;

        /**
         * Return the separator of the given `list`.
         */
        "list-separator"(list: Nodes.Expression): Nodes.String;
    }

    export interface Utils {
        /**
         * Check if `path` looks absolute.
         */
        absolute(path: string): boolean;

        /**
         * Attempt to lookup `path` within `paths` from tail to head.
         * Optionally a path to `ignore` may be passed.
         */
        lookup(path: string, paths: string, ignore: string, resolveURL: boolean): string;

        /**
         * Attempt to lookup `path` within `paths` from tail to head.
         * Optionally a path to `ignore` may be passed.
         */
        lookupIndex(path: string, paths: string, filename: string): string[];

        /**
         * Like `utils.lookup` but uses `glob` to find files.
         */
        find(path: string, paths: string, ignore: string): string[];

        /**
         * Format the given `err` with the given `options`.
         */
        formatException(err: Error, options: ExceptionOptions): Error;

        /**
         * Assert that `node` is of the given `type`, or throw.
         */
        assertType(node: Nodes.Node, type: string, param: string): void;

        /**
         * Assert that `node` is a `String` or `Ident`.
         */
        assertString(node: Nodes.Node, param: string): void;

        /**
         * Assert that `node` is a `RGBA` or `HSLA`.
         */
        assertColor(node: Nodes.Node, param: string): void;

        /**
         * Assert that param `name` is given, aka the `node` is passed.
         */
        assertPresent(node: Nodes.Node, name: string): void;

        /**
         * Unwrap `expr`.
         *
         * Takes an expressions with length of 1
         * such as `((1 2 3))` and unwraps it to `(1 2 3)`.
         */
        unwrap(expr: Nodes.Expression): Nodes.Node;

        /**
         * Coerce JavaScript values to their Stylus equivalents.
         */
        coerce(val: any): Nodes.Node;
        coerce(val: any, raw: boolean): Nodes.Node;

        /**
         * Coerce a javascript `Array` to a Stylus `Expression`.
         */
        coerceArray(val: any): Nodes.Expression;
        coerceArray(val: any, raw: boolean): Nodes.Expression;

        /**
         * Coerce a javascript object to a Stylus `Expression` or `Object`.
         *
         * For example `{ foo: 'bar', bar: 'baz' }` would become
         * the expression `(foo 'bar') (bar 'baz')`. If `raw` is true
         * given `obj` would become a Stylus hash object.
         */
        coerceObject(obj: any): Nodes.Expression;
        coerceObject(obj: any, raw: boolean): Nodes.Expression;

        /**
         * Return param names for `fn`.
         */
        params(fn: Function): string[];

        /**
         * Merge object `b` with `a`.
         */
        merge(a: any, b: any): any;

        /**
         * Returns an array with unique values.
         */
        uniq(arr: any[]): any[];

        /**
         * Compile selector strings in `arr` from the bottom-up
         * to produce the selector combinations. For example
         * the following Stylus:
         */
        compileSelectors(arr: string[], leaveHidden: boolean): string[];
    }

    export interface UrlFunction {
        (options: UrlOptions): LiteralFunction;

        mimes: {
            ".gif": string;
            ".png": string;
            ".jpg": string;
            ".jpeg": string;
            ".svg": string;
            ".ttf": string;
            ".eot": string;
            ".woff": string;
        };
    }

    export interface Middleware {
        (req: any, res: any, next: Function): void;
    }

    //#endregion

    //#region Internal Classes

    export class Visitor {
    }

    export class Parser {
    }

    export class Evaluator {
    }

    export class Compiler {
    }

    export class Renderer implements NodeJS.EventEmitter {
        options: RenderOptions;
        str: string;
        events: any;

        constructor(str: string);
        constructor(str: string, options: RenderOptions);

        /**
         * Parse and evaluate AST, then callback `fn(err, css, js)`.
         */
        render(callback: RenderCallback): void;

        /**
         * Get dependencies of the compiled file.
         */
        deps(filename: string): string[];

        /**
         * Set option `key` to `val`.
         */
        set(key: string, val: any): Renderer;

        /**
         * Get option `key`.
         */
        get(key: string): any;

        /**
         * Include the given `path` to the lookup paths array.
         */
        include(path: string): Renderer;

        /**
         * Use the given `fn`.
         *
         * This allows for plugins to alter the renderer in
         * any way they wish, exposing paths etc.
         */
        use(fn: (renderer: Renderer) => any): Renderer;

        /**
         * Define function or global var with the given `name`. Optionally
         * the function may accept full expressions, by setting `raw`
         * to `true`.
         */
        define(name: string, fn: Function): Renderer;
        define(name: string, node: Nodes.Node): Renderer;
        define(name: string, val: any): Renderer;
        define(name: string, fn: Function, raw: boolean): Renderer;
        define(name: string, node: Nodes.Node, raw: boolean): Renderer;
        define(name: string, val: any, raw: boolean): Renderer;

        /**
         * Import the given `file`.
         */
        import(file: string): Renderer;

        //#region EventEmitter Members
        addListener(event: string, listener: Function): Renderer;
        on(event: string, listener: Function): Renderer;
        once(event: string, listener: Function): Renderer;
        removeListener(event: string, listener: Function): Renderer;
        removeAllListeners(event?: string): Renderer;
        setMaxListeners(n: number): void;
        listeners(event: string): Function[];
        emit(event: string, ...args: any[]): boolean;
        //#endregion
    }

    //#endregion

    //#region Nodes Classes

    export module Nodes {

        export class Node {
            lineno: number;
            column: number;
            filename: string;

            first: Node;
            hash: string;
            nodeName: string;

            constructor();

            /**
             * Return a clone of this node.
             */
            clone(): Node;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { lineno: number; column: number; filename: string };

            /**
             * Nodes by default evaluate to themselves.
             */
            eval(): Node;

            /**
             * Return true.
             */
            toBoolean(): Boolean;

            /**
             * Return the expression, or wrap this node in an expression.
             */
            toExpression(): Expression;

            /**
             * Return false if `op` is generally not coerced.
             */
            shouldCoerce(op: string): boolean;

            /**
             * Operate on `right` with the given `op`.
             */
            operate(op: string, right: Node): Node;

            /**
             *  Default coercion throws.
             */
            coerce(other: Node): Node;
        }

        export class Root extends Node {
            nodes: Node[];

            /**
             * Push a `node` to this block.
             */
            push(node: Node): void;

            /**
             * Unshift a `node` to this block.
             */
            unshift(node: Node): void;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { nodes: Node[]; lineno: number; column: number; filename: string };
        }

        export class String extends Node {
            val: string;
            string: string;
            prefixed: boolean;
            quote: string;

            constructor(val: string);
            constructor(val: string, quote: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { val: string; quote: string; lineno: number; column: number; filename: string };
        }

        export class Number extends Node {

        }

        export class Boolean extends Node {
            val: boolean;
            isTrue: boolean;
            isFalse: boolean;

            constructor();
            constructor(val: boolean);

            /**
             * Negate the value.
             */
            negate(): Boolean;

            /**
             * Return 'Boolean'.
             */
            inspect(): Boolean;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; val: boolean; lineno: number; column: number; filename: string };
        }

        export class Object extends Node {
            vals: Dictionary<Node>;
            length: number;

            constructor();

            /**
             * Set `key` to `val`.
             */
            set(key: string, value: Node): Object;

            /**
             * Get `key`.
             */
            get(key: string): Node;

            /**
             * Has `key`?
             */
            has(key: string): boolean;

            /**
             * Convert object to string with properties.
             */
            toBlock(): string;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; vals: Dictionary<Node>; lineno: number; column: number; filename: string };
        }

        export class Null extends Node {
            isNull: boolean;

            constructor();

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; lineno: number; column: number; filename: string };
        }

        export class Ident extends Node {
            name: string;
            string: string;
            val: Node;
            mixin: boolean;

            isEmpty: boolean;

            constructor(name: string, val: Node);
            constructor(name: string, val: Node, mixin: boolean);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; name: string; val: Node; mixin: boolean; lineno: number; column: number; filename: string };
        }

        export class Literal extends Node {
            val: string;
            string: string;
            prefixed: boolean;

            constructor(str: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; string: string; val: string; prefixed: boolean; lineno: number; column: number; filename: string };
        }

        export class Unit extends Node {
            val: number;
            type: string;

            constructor(val: number, type: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; val: number; type: string; lineno: number; column: number; filename: string };
        }

        export class RGBA extends Node {
            r: number;
            g: number;
            b: number;
            a: number;
            rgba: RGBA;
            hsla: HSLA;

            constructor(r: number, g: number, b: number, a: number);

            /**
             * Return an `RGBA` without clamping values.
             */
            static withoutClamping(r: number, g: number, b: number, a: number): RGBA;

            /**
             * Return a `RGBA` from the given `hsla`.
             */
            static fromHSLA(hsla: HSLA): RGBA;

            /**
             * Add r,g,b,a to the current component values
             */
            add(r: number, g: number, b: number, a: number): RGBA;

            /**
             * Subtract r,g,b,a from the current component values
             */
            substract(r: number, g: number, b: number, a: number): RGBA;

            /**
             * Multiply rgb components by `n`.
             */
            multiply(n: number): RGBA;

            /**
             * Divide rgb components by `n`.
             */
            divide(n: number): RGBA;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; r: number; g: number; b: number; a: number; lineno: number; column: number; filename: string };
        }

        export class HSLA extends Node {
            h: number;
            s: number;
            l: number;
            a: number;
            hsla: HSLA;
            rgba: RGBA;

            constructor(h: number, s: number, l: number, a: number);

            /**
             * Return a `HSLA` from the given `hsla`.
             */
            static fromRGBA(rgba: RGBA): HSLA;

            /**
             * Add h,s,l to the current component values
             */
            add(h: number, s: number, l: number): HSLA;

            /**
             * Subtract h,s,l from the current component values
             */
            substract(h: number, s: number, l: number): HSLA;

            /**
             * Adjust lightness by `percent`.
             */
            adjustLightness(percent: number): HSLA;

            /**
             * djust hue by `deg`.
             */
            adjustHue(deg: number): HSLA;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; h: number; s: number; l: number; a: number; lineno: number; column: number; filename: string };
        }

        export class Block extends Node {
            nodes: Node[];
            parent: Block;
            node: Node;
            scope: boolean;

            hasProperties: boolean;
            hasMedia: boolean;
            isEmpty: boolean;

            constructor(parent: Block);
            constructor(parent: Block, node: Node);

            /**
             * Push a `node` to this block.
             */
            push(node: Node): void;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; nodes: Node[]; scope: boolean; lineno: number; column: number; filename: string };
        }

        export class Group extends Node {
            nodes: Node[];
            block: Block;

            hasOnlyPlaceholders: boolean;

            constructor();

            /**
             * Push the given `selector` node.
             */
            push(node: Node): void;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; nodes: Node[]; block: Block; lineno: number; column: number; filename: string };
        }

        export class Expression extends Node {
            nodes: Node[];
            isList: boolean;

            isEmpty: boolean;
            first: Node;

            constructor(isList: boolean);

            /**
             * Push the given node.
             */
            push(node: Node): void;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; nodes: Node[]; isList: boolean; lineno: number; column: number; filename: string };
        }

        export class Property extends Node {
            segments: Node[];
            expr: Expression;

            constructor(segs: Node[], expr: Expression);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; segments: Node[]; name: string; expr?: Expression; literal?: Literal; lineno: number; column: number; filename: string };
        }

        export class Each extends Node {
            val: string;
            key: string;
            expr: Expression;
            block: Block;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; val: string; key: string; expr: Expression; block: Block; lineno: number; column: number; filename: string };
        }

        export class If extends Node {
            cond: Expression;
            elses: Expression[];
            block: Block;
            negate: boolean;

            constructor(cond: Expression, negate: boolean);
            constructor(cond: Expression, block: Block);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; cond: Expression; elses: Expression[]; block: Block; negate: boolean; lineno: number; column: number; filename: string };
        }

        export class Call extends Node {
            name: string;
            args: Expression;

            constructor(name: string, args: Expression);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; name: string; args: Expression; lineno: number; column: number; filename: string };
        }

        export class UnaryOp extends Node {
            op: string;
            expr: Expression;

            constructor(op: string, expr: Expression);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; op: string; expr: Expression; lineno: number; column: number; filename: string };
        }

        export class BinOp extends Node {
            op: string;
            left: Expression;
            right: Expression;

            constructor(op: string, left: Expression, right: Expression);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; op: string; left: Expression; right: Expression; lineno: number; column: number; filename: string };
        }

        export class Ternary extends Node {
            op: string;
            trueExpr: Expression;
            falseExpr: Expression;

            constructor(op: string, trueExpr: Expression, falseExpr: Expression);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; op: string; trueExpr: Expression; falseExpr: Expression; lineno: number; column: number; filename: string };
        }

        export class Return extends Node {
            expr: Expression;

            constructor(expr: Expression);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; expr: Expression; lineno: number; column: number; filename: string };
        }

        export class Media extends Node {
            val: string;

            constructor(val: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; val: string; lineno: number; column: number; filename: string };
        }

        export class QueryList extends Node {
            nodes: Node[];

            constructor();

            /**
             * Push the given `node`.
             */
            push(node: Node): void;

            /**
             * Merges this query list with the `other`.
             */
            merge(other: MediaQueryList): MediaQueryList;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; nodes: Node[]; lineno: number; column: number; filename: string };
        }

        export class Query extends Node {
            nodes: QueryExpr[];
            type: string;
            predicate: string;

            resolvedType: string;
            resolvedPredicate: string;

            constructor();

            /**
             * Push the given `expr`.
             */
            push(expr: QueryExpr): void;

            /**
             * Merges this query with the `other`.
             */
            merge(other: Query): Query;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; nodes: QueryExpr[]; predicate: string; type: string; lineno: number; column: number; filename: string };
        }

        export class QueryExpr extends Node {
            segments: Node[];
            expr: Expression;

            constructor(segs: Node[]);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; segments: Node[]; lineno: number; column: number; filename: string };
        }

        export class Params extends Node {
            nodes: Node[];

            length: number;

            /**
             * Push the given `node`.
             */
            push(node: Node): void;

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; nodes: Node[]; lineno: number; column: number; filename: string };
        }

        export class Comment extends Node {
            str: string;
            suppress: boolean;
            inline: boolean;

            constructor(str: string, suppress: boolean, inline: boolean);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; str: string; suppress: boolean; inline: boolean; lineno: number; column: number; filename: string };
        }

        export class Keyframes extends Node {
            segments: Node[];
            prefix: string;

            constructor(segs: Node[]);
            constructor(segs: Node[], prefix: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; segments: Node[]; prefix: string; block: Block; lineno: number; column: number; filename: string };
        }

        export class Member extends Node {
            left: Node;
            right: Node;

            constructor(left: Node, right: Node);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; left: Node; right: Node; val?: string; lineno: number; column: number; filename: string };
        }

        export class Charset extends Node {
            val: string;

            constructor(val: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; val: string; lineno: number; column: number; filename: string };
        }

        export class Namespace extends Node {
            val: string;
            prefix: string;

            constructor(val: string, prefix: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; val: string; prefix: string; lineno: number; column: number; filename: string };
        }

        export class Import extends Node {
            path: Expression;
            once: boolean;

            constructor(path: Expression);
            constructor(path: Expression, once: boolean);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; path: Expression; lineno: number; column: number; filename: string };
        }

        export class Extend extends Node {
            selectors: Selector[];

            constructor(selectors: Selector[]);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; selectors: Selector[]; lineno: number; column: number; filename: string };
        }

        export class Function extends Node {
            name: string;
            params: Params;
            body: Block;

            constructor(name: string, params: Params, body: Block);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; name: string; params: Params; body: Block; lineno: number; column: number; filename: string };
        }

        export class Selector extends Node {
            inherits: boolean;
            segments: Node[];

            constructor(segs: Node[]);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; segments: Node[]; inherits: boolean; val: string; lineno: number; column: number; filename: string };
        }

        export class Arguments extends Expression {
            map: Dictionary<Node>;

            constructor();

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; map: Dictionary<Node>; isList: boolean; preserve: boolean; nodes: Node[]; lineno: number; column: number; filename: string };
        }

        export class Atblock extends Node {
            block: Block;
            nodes: Node[];

            constructor();

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; block: Block; lineno: number; column: number; filename: string };
        }

        export class Atrule extends Node {
            type: string;

            hasOnlyProperties: boolean;

            constructor(type: string);

            /**
             * Return a JSON representation of this node.
             */
            toJSON(): { __type: string; type: string; segments: Node[]; block?: Block; lineno: number; column: number; filename: string };
        }
    }

    //#endregion

    //#region Internal Interfaces

    export interface Dictionary<T> {
        [key: string]: T;
    }

    export interface RenderOptions {
        globals?: Dictionary<any>;
        functions?: Dictionary<any>;
        imports?: string[];
        paths?: string[];
        filename?: string;
        Evaluator?: typeof Evaluator;
    }

    export interface RenderCallback {
        (err: Error, css: string, js: string): void;
    }

    export interface UrlOptions {
        limit?: string;
        path: string;
    }

    export interface LiteralFunction {
        (url: string): Nodes.Literal;
        raw: boolean;
    }

    export interface ExceptionOptions {
        filename: string;
        context: number;
        lineno: number;
        column: number;
        input: string;
    }

    //#endregion
}

declare module "stylus" {
    var stylus: Stylus.Static;
    export = stylus;
}
