491 lines
13 KiB
JavaScript
491 lines
13 KiB
JavaScript
/** @import { ComponentType, SvelteComponent, Component } from 'svelte' */
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/** @import { Csp, RenderOutput } from '#server' */
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/** @import { Store } from '#shared' */
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export { FILENAME, HMR } from '../../constants.js';
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import { attr, clsx, to_class, to_style } from '../shared/attributes.js';
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import { is_promise, noop } from '../shared/utils.js';
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import { subscribe_to_store } from '../../store/utils.js';
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import {
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UNINITIALIZED,
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ELEMENT_PRESERVE_ATTRIBUTE_CASE,
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ELEMENT_IS_NAMESPACED,
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ELEMENT_IS_INPUT
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} from '../../constants.js';
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import { escape_html } from '../../escaping.js';
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import { DEV } from 'esm-env';
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import { EMPTY_COMMENT, BLOCK_CLOSE, BLOCK_OPEN, BLOCK_OPEN_ELSE } from './hydration.js';
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import { validate_store } from '../shared/validate.js';
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import { is_boolean_attribute, is_raw_text_element, is_void } from '../../utils.js';
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import { Renderer } from './renderer.js';
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import * as e from './errors.js';
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// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
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// https://infra.spec.whatwg.org/#noncharacter
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const INVALID_ATTR_NAME_CHAR_REGEX =
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/[\s'">/=\u{FDD0}-\u{FDEF}\u{FFFE}\u{FFFF}\u{1FFFE}\u{1FFFF}\u{2FFFE}\u{2FFFF}\u{3FFFE}\u{3FFFF}\u{4FFFE}\u{4FFFF}\u{5FFFE}\u{5FFFF}\u{6FFFE}\u{6FFFF}\u{7FFFE}\u{7FFFF}\u{8FFFE}\u{8FFFF}\u{9FFFE}\u{9FFFF}\u{AFFFE}\u{AFFFF}\u{BFFFE}\u{BFFFF}\u{CFFFE}\u{CFFFF}\u{DFFFE}\u{DFFFF}\u{EFFFE}\u{EFFFF}\u{FFFFE}\u{FFFFF}\u{10FFFE}\u{10FFFF}]/u;
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/**
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* @param {Renderer} renderer
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* @param {string} tag
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* @param {() => void} attributes_fn
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* @param {() => void} children_fn
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* @returns {void}
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*/
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export function element(renderer, tag, attributes_fn = noop, children_fn = noop) {
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renderer.push('<!---->');
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if (tag) {
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renderer.push(`<${tag}`);
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attributes_fn();
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renderer.push(`>`);
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if (!is_void(tag)) {
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children_fn();
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if (!is_raw_text_element(tag)) {
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renderer.push(EMPTY_COMMENT);
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}
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renderer.push(`</${tag}>`);
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}
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}
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renderer.push('<!---->');
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}
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/**
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* Only available on the server and when compiling with the `server` option.
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* Takes a component and returns an object with `body` and `head` properties on it, which you can use to populate the HTML when server-rendering your app.
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* @template {Record<string, any>} Props
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* @param {Component<Props> | ComponentType<SvelteComponent<Props>>} component
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* @param {{ props?: Omit<Props, '$$slots' | '$$events'>; context?: Map<any, any>; idPrefix?: string; csp?: Csp }} [options]
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* @returns {RenderOutput}
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*/
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export function render(component, options = {}) {
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if (options.csp?.hash && options.csp.nonce) {
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e.invalid_csp();
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}
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return Renderer.render(/** @type {Component<Props>} */ (component), options);
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}
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/**
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* @param {string} hash
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* @param {Renderer} renderer
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* @param {(renderer: Renderer) => Promise<void> | void} fn
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* @returns {void}
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*/
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export function head(hash, renderer, fn) {
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renderer.head((renderer) => {
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renderer.push(`<!--${hash}-->`);
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renderer.child(fn);
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renderer.push(EMPTY_COMMENT);
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});
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}
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/**
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* @param {Renderer} renderer
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* @param {boolean} is_html
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* @param {Record<string, string>} props
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* @param {() => void} component
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* @param {boolean} dynamic
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* @returns {void}
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*/
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export function css_props(renderer, is_html, props, component, dynamic = false) {
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const styles = style_object_to_string(props);
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if (is_html) {
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renderer.push(`<svelte-css-wrapper style="display: contents; ${styles}">`);
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} else {
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renderer.push(`<g style="${styles}">`);
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}
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if (dynamic) {
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renderer.push('<!---->');
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}
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component();
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if (is_html) {
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renderer.push(`<!----></svelte-css-wrapper>`);
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} else {
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renderer.push(`<!----></g>`);
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}
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}
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/**
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* @param {Record<string, unknown>} attrs
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* @param {string} [css_hash]
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* @param {Record<string, boolean>} [classes]
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* @param {Record<string, string>} [styles]
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* @param {number} [flags]
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* @returns {string}
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*/
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export function attributes(attrs, css_hash, classes, styles, flags = 0) {
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if (styles) {
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attrs.style = to_style(attrs.style, styles);
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}
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if (attrs.class) {
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attrs.class = clsx(attrs.class);
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}
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if (css_hash || classes) {
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attrs.class = to_class(attrs.class, css_hash, classes);
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}
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let attr_str = '';
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let name;
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const is_html = (flags & ELEMENT_IS_NAMESPACED) === 0;
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const lowercase = (flags & ELEMENT_PRESERVE_ATTRIBUTE_CASE) === 0;
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const is_input = (flags & ELEMENT_IS_INPUT) !== 0;
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for (name in attrs) {
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// omit functions, internal svelte properties and invalid attribute names
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if (typeof attrs[name] === 'function') continue;
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if (name[0] === '$' && name[1] === '$') continue; // faster than name.startsWith('$$')
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if (INVALID_ATTR_NAME_CHAR_REGEX.test(name)) continue;
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var value = attrs[name];
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if (lowercase) {
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name = name.toLowerCase();
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}
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if (is_input) {
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if (name === 'defaultvalue' || name === 'defaultchecked') {
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name = name === 'defaultvalue' ? 'value' : 'checked';
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if (attrs[name]) continue;
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}
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}
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attr_str += attr(name, value, is_html && is_boolean_attribute(name));
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}
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return attr_str;
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}
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/**
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* @param {Record<string, unknown>[]} props
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* @returns {Record<string, unknown>}
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*/
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export function spread_props(props) {
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/** @type {Record<string, unknown>} */
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const merged_props = {};
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let key;
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for (let i = 0; i < props.length; i++) {
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const obj = props[i];
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for (key in obj) {
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const desc = Object.getOwnPropertyDescriptor(obj, key);
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if (desc) {
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Object.defineProperty(merged_props, key, desc);
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} else {
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merged_props[key] = obj[key];
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}
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}
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}
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return merged_props;
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}
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/**
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* @param {unknown} value
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* @returns {string}
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*/
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export function stringify(value) {
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return typeof value === 'string' ? value : value == null ? '' : value + '';
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}
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/** @param {Record<string, string>} style_object */
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function style_object_to_string(style_object) {
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return Object.keys(style_object)
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.filter(/** @param {any} key */ (key) => style_object[key] != null && style_object[key] !== '')
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.map(/** @param {any} key */ (key) => `${key}: ${escape_html(style_object[key], true)};`)
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.join(' ');
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}
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/**
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* @param {any} value
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* @param {string | undefined} [hash]
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* @param {Record<string, boolean>} [directives]
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*/
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export function attr_class(value, hash, directives) {
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var result = to_class(value, hash, directives);
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return result ? ` class="${escape_html(result, true)}"` : '';
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}
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/**
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* @param {any} value
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* @param {Record<string,any>|[Record<string,any>,Record<string,any>]} [directives]
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*/
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export function attr_style(value, directives) {
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var result = to_style(value, directives);
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return result ? ` style="${escape_html(result, true)}"` : '';
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}
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/**
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* @template V
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* @param {Record<string, [any, any, any]>} store_values
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* @param {string} store_name
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* @param {Store<V> | null | undefined} store
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* @returns {V}
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*/
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export function store_get(store_values, store_name, store) {
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if (DEV) {
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validate_store(store, store_name.slice(1));
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}
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// it could be that someone eagerly updates the store in the instance script, so
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// we should only reuse the store value in the template
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if (store_name in store_values && store_values[store_name][0] === store) {
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return store_values[store_name][2];
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}
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store_values[store_name]?.[1](); // if store was switched, unsubscribe from old store
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store_values[store_name] = [store, null, undefined];
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const unsub = subscribe_to_store(
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store,
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/** @param {any} v */ (v) => (store_values[store_name][2] = v)
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);
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store_values[store_name][1] = unsub;
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return store_values[store_name][2];
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}
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/**
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* Sets the new value of a store and returns that value.
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* @template V
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* @param {Store<V>} store
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* @param {V} value
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* @returns {V}
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*/
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export function store_set(store, value) {
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store.set(value);
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return value;
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}
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/**
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* Updates a store with a new value.
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* @template V
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* @param {Record<string, [any, any, any]>} store_values
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* @param {string} store_name
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* @param {Store<V>} store
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* @param {any} expression
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*/
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export function store_mutate(store_values, store_name, store, expression) {
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store_set(store, store_get(store_values, store_name, store));
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return expression;
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}
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/**
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* @param {Record<string, [any, any, any]>} store_values
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* @param {string} store_name
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* @param {Store<number>} store
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* @param {1 | -1} [d]
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* @returns {number}
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*/
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export function update_store(store_values, store_name, store, d = 1) {
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let store_value = store_get(store_values, store_name, store);
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store.set(store_value + d);
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return store_value;
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}
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/**
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* @param {Record<string, [any, any, any]>} store_values
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* @param {string} store_name
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* @param {Store<number>} store
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* @param {1 | -1} [d]
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* @returns {number}
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*/
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export function update_store_pre(store_values, store_name, store, d = 1) {
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const value = store_get(store_values, store_name, store) + d;
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store.set(value);
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return value;
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}
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/** @param {Record<string, [any, any, any]>} store_values */
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export function unsubscribe_stores(store_values) {
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for (const store_name in store_values) {
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store_values[store_name][1]();
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}
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}
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/**
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* @param {Renderer} renderer
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* @param {Record<string, any>} $$props
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* @param {string} name
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* @param {Record<string, unknown>} slot_props
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* @param {null | (() => void)} fallback_fn
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* @returns {void}
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*/
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export function slot(renderer, $$props, name, slot_props, fallback_fn) {
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var slot_fn = $$props.$$slots?.[name];
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// Interop: Can use snippets to fill slots
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if (slot_fn === true) {
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slot_fn = $$props[name === 'default' ? 'children' : name];
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}
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if (slot_fn !== undefined) {
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slot_fn(renderer, slot_props);
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} else {
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fallback_fn?.();
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}
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}
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/**
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* @param {Record<string, unknown>} props
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* @param {string[]} rest
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* @returns {Record<string, unknown>}
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*/
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export function rest_props(props, rest) {
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/** @type {Record<string, unknown>} */
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const rest_props = {};
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let key;
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for (key in props) {
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if (!rest.includes(key)) {
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rest_props[key] = props[key];
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}
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}
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return rest_props;
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}
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/**
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* @param {Record<string, unknown>} props
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* @returns {Record<string, unknown>}
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*/
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export function sanitize_props(props) {
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const { children, $$slots, ...sanitized } = props;
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return sanitized;
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}
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/**
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* @param {Record<string, any>} props
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* @returns {Record<string, boolean>}
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*/
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export function sanitize_slots(props) {
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/** @type {Record<string, boolean>} */
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const sanitized = {};
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if (props.children) sanitized.default = true;
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for (const key in props.$$slots) {
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sanitized[key] = true;
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}
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return sanitized;
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}
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/**
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* Legacy mode: If the prop has a fallback and is bound in the
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* parent component, propagate the fallback value upwards.
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* @param {Record<string, unknown>} props_parent
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* @param {Record<string, unknown>} props_now
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*/
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export function bind_props(props_parent, props_now) {
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for (const key in props_now) {
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const initial_value = props_parent[key];
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const value = props_now[key];
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if (
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initial_value === undefined &&
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value !== undefined &&
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Object.getOwnPropertyDescriptor(props_parent, key)?.set
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) {
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props_parent[key] = value;
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}
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}
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}
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/**
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* @template V
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* @param {Renderer} renderer
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* @param {Promise<V>} promise
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* @param {null | (() => void)} pending_fn
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* @param {(value: V) => void} then_fn
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* @returns {void}
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*/
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function await_block(renderer, promise, pending_fn, then_fn) {
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if (is_promise(promise)) {
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renderer.push(BLOCK_OPEN);
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promise.then(null, noop);
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if (pending_fn !== null) {
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pending_fn();
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}
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} else if (then_fn !== null) {
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renderer.push(BLOCK_OPEN_ELSE);
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then_fn(promise);
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}
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}
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export { await_block as await };
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/** @param {any} array_like_or_iterator */
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export function ensure_array_like(array_like_or_iterator) {
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if (array_like_or_iterator) {
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return array_like_or_iterator.length !== undefined
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? array_like_or_iterator
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: Array.from(array_like_or_iterator);
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}
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return [];
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}
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/**
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* @template V
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* @param {() => V} get_value
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*/
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export function once(get_value) {
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let value = /** @type {V} */ (UNINITIALIZED);
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return () => {
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if (value === UNINITIALIZED) {
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value = get_value();
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}
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return value;
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};
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}
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/**
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* Create an unique ID
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* @param {Renderer} renderer
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* @returns {string}
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*/
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export function props_id(renderer) {
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const uid = renderer.global.uid();
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renderer.push('<!--$' + uid + '-->');
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return uid;
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}
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export { attr, clsx };
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export { html } from './blocks/html.js';
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export { save } from './context.js';
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export { push_element, pop_element, validate_snippet_args } from './dev.js';
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export { snapshot } from '../shared/clone.js';
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export { fallback, to_array } from '../shared/utils.js';
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export {
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invalid_default_snippet,
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validate_dynamic_element_tag,
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validate_void_dynamic_element,
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prevent_snippet_stringification
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} from '../shared/validate.js';
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export { escape_html as escape };
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/**
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* @template T
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* @param {()=>T} fn
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* @returns {(new_value?: T) => (T | void)}
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*/
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export function derived(fn) {
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const get_value = once(fn);
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/**
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* @type {T | undefined}
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*/
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let updated_value;
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return function (new_value) {
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if (arguments.length === 0) {
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return updated_value ?? get_value();
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}
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updated_value = new_value;
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return updated_value;
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};
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}
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