/**
 * @license
 * Copyright 2017 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */

/** TemplateResult types */
declare const HTML_RESULT = 1;
declare const SVG_RESULT = 2;
declare const MATHML_RESULT = 3;
type ResultType = typeof HTML_RESULT | typeof SVG_RESULT | typeof MATHML_RESULT;
/**
 * The return type of the template tag functions, {@linkcode html} and
 * {@linkcode svg} when it hasn't been compiled by @lit-labs/compiler.
 *
 * A `TemplateResult` object holds all the information about a template
 * expression required to render it: the template strings, expression values,
 * and type of template (html or svg).
 *
 * `TemplateResult` objects do not create any DOM on their own. To create or
 * update DOM you need to render the `TemplateResult`. See
 * [Rendering](https://lit.dev/docs/components/rendering) for more information.
 *
 */
type UncompiledTemplateResult<T extends ResultType = ResultType> = {
    ['_$litType$']: T;
    strings: TemplateStringsArray;
    values: unknown[];
};
/**
 * The return type of the template tag functions, {@linkcode html} and
 * {@linkcode svg}.
 *
 * A `TemplateResult` object holds all the information about a template
 * expression required to render it: the template strings, expression values,
 * and type of template (html or svg).
 *
 * `TemplateResult` objects do not create any DOM on their own. To create or
 * update DOM you need to render the `TemplateResult`. See
 * [Rendering](https://lit.dev/docs/components/rendering) for more information.
 *
 * In Lit 4, this type will be an alias of
 * MaybeCompiledTemplateResult, so that code will get type errors if it assumes
 * that Lit templates are not compiled. When deliberately working with only
 * one, use either {@linkcode CompiledTemplateResult} or
 * {@linkcode UncompiledTemplateResult} explicitly.
 */
type TemplateResult<T extends ResultType = ResultType> = UncompiledTemplateResult<T>;
/**
 * Interprets a template literal as an HTML template that can efficiently
 * render to and update a container.
 *
 * ```ts
 * const header = (title: string) => html`<h1>${title}</h1>`;
 * ```
 *
 * The `html` tag returns a description of the DOM to render as a value. It is
 * lazy, meaning no work is done until the template is rendered. When rendering,
 * if a template comes from the same expression as a previously rendered result,
 * it's efficiently updated instead of replaced.
 */
declare const html$1: (strings: TemplateStringsArray, ...values: unknown[]) => TemplateResult<1>;
/**
 * Interprets a template literal as an SVG fragment that can efficiently render
 * to and update a container.
 *
 * ```ts
 * const rect = svg`<rect width="10" height="10"></rect>`;
 *
 * const myImage = html`
 *   <svg viewBox="0 0 10 10" xmlns="http://www.w3.org/2000/svg">
 *     ${rect}
 *   </svg>`;
 * ```
 *
 * The `svg` *tag function* should only be used for SVG fragments, or elements
 * that would be contained **inside** an `<svg>` HTML element. A common error is
 * placing an `<svg>` *element* in a template tagged with the `svg` tag
 * function. The `<svg>` element is an HTML element and should be used within a
 * template tagged with the {@linkcode html} tag function.
 *
 * In LitElement usage, it's invalid to return an SVG fragment from the
 * `render()` method, as the SVG fragment will be contained within the element's
 * shadow root and thus not be properly contained within an `<svg>` HTML
 * element.
 */
declare const svg$1: (strings: TemplateStringsArray, ...values: unknown[]) => TemplateResult<2>;
/**
 * Interprets a template literal as MathML fragment that can efficiently render
 * to and update a container.
 *
 * ```ts
 * const num = mathml`<mn>1</mn>`;
 *
 * const eq = html`
 *   <math>
 *     ${num}
 *   </math>`;
 * ```
 *
 * The `mathml` *tag function* should only be used for MathML fragments, or
 * elements that would be contained **inside** a `<math>` HTML element. A common
 * error is placing a `<math>` *element* in a template tagged with the `mathml`
 * tag function. The `<math>` element is an HTML element and should be used
 * within a template tagged with the {@linkcode html} tag function.
 *
 * In LitElement usage, it's invalid to return an MathML fragment from the
 * `render()` method, as the MathML fragment will be contained within the
 * element's shadow root and thus not be properly contained within a `<math>`
 * HTML element.
 */
declare const mathml$1: (strings: TemplateStringsArray, ...values: unknown[]) => TemplateResult<3>;

/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */

interface StaticValue {
    /** The value to interpolate as-is into the template. */
    _$litStatic$: string;
    /**
     * A value that can't be decoded from ordinary JSON, make it harder for
     * an attacker-controlled data that goes through JSON.parse to produce a valid
     * StaticValue.
     */
    r: typeof brand;
}
/**
 * Prevents JSON injection attacks.
 *
 * The goals of this brand:
 *   1) fast to check
 *   2) code is small on the wire
 *   3) multiple versions of Lit in a single page will all produce mutually
 *      interoperable StaticValues
 *   4) normal JSON.parse (without an unusual reviver) can not produce a
 *      StaticValue
 *
 * Symbols satisfy (1), (2), and (4). We use Symbol.for to satisfy (3), but
 * we don't care about the key, so we break ties via (2) and use the empty
 * string.
 */
declare const brand: unique symbol;
/**
 * Wraps a string so that it behaves like part of the static template
 * strings instead of a dynamic value.
 *
 * Users must take care to ensure that adding the static string to the template
 * results in well-formed HTML, or else templates may break unexpectedly.
 *
 * Note that this function is unsafe to use on untrusted content, as it will be
 * directly parsed into HTML. Do not pass user input to this function
 * without sanitizing it.
 *
 * Static values can be changed, but they will cause a complete re-render
 * since they effectively create a new template.
 */
declare const unsafeStatic: (value: string) => StaticValue;
/**
 * Tags a string literal so that it behaves like part of the static template
 * strings instead of a dynamic value.
 *
 * The only values that may be used in template expressions are other tagged
 * `literal` results or `unsafeStatic` values (note that untrusted content
 * should never be passed to `unsafeStatic`).
 *
 * Users must take care to ensure that adding the static string to the template
 * results in well-formed HTML, or else templates may break unexpectedly.
 *
 * Static values can be changed, but they will cause a complete re-render since
 * they effectively create a new template.
 */
declare const literal: (strings: TemplateStringsArray, ...values: unknown[]) => StaticValue;
/**
 * Wraps a lit-html template tag (`html` or `svg`) to add static value support.
 */
declare const withStatic: (coreTag: typeof html$1 | typeof svg$1 | typeof mathml$1) => (strings: TemplateStringsArray, ...values: unknown[]) => TemplateResult;
/**
 * Interprets a template literal as an HTML template that can efficiently
 * render to and update a container.
 *
 * Includes static value support from `lit-html/static.js`.
 */
declare const html: (strings: TemplateStringsArray, ...values: unknown[]) => TemplateResult;
/**
 * Interprets a template literal as an SVG template that can efficiently
 * render to and update a container.
 *
 * Includes static value support from `lit-html/static.js`.
 */
declare const svg: (strings: TemplateStringsArray, ...values: unknown[]) => TemplateResult;
/**
 * Interprets a template literal as MathML fragment that can efficiently render
 * to and update a container.
 *
 * Includes static value support from `lit-html/static.js`.
 */
declare const mathml: (strings: TemplateStringsArray, ...values: unknown[]) => TemplateResult;

export { type StaticValue, html, literal, mathml, svg, unsafeStatic, withStatic };