@humanspeak/svelte-markdown/dist/utils/component-props.js

Markdown and HTML renderer for Svelte 5 — built for rendering streaming AI agent output from Claude Code, ChatGPT, and agentic workflows. XSS-safe defaults, streaming-aware sanitization, token caching, TypeScript types, and Svelte 5 runes.

import { defaultRenderers } from './markdown-parser.js';
import { rendererKeysInternal } from './rendererKeys.js';
/**
 * Merges caller renderer overrides with the built-in renderer map.
 *
 * @param renderers Partial renderer overrides from component props.
 * @returns Renderer map with default markdown and HTML renderers preserved.
 */
export const buildCombinedRenderers = (renderers) => ({
    ...defaultRenderers,
    ...renderers,
    html: renderers.html
        ? {
            ...defaultRenderers.html,
            ...renderers.html
        }
        : defaultRenderers.html
});
/**
 * Gets renderer keys recognized by the component.
 *
 * @param extensionTokenNames Custom token names declared by Marked extensions.
 * @returns Built-in markdown renderer keys followed by extension token names.
 */
export const getAllRendererKeys = (extensionTokenNames) => [
    ...rendererKeysInternal,
    ...extensionTokenNames
];
/**
 * Extracts markdown snippet overrides from rest props.
 *
 * @param rest Extra component props after known SvelteMarkdown props are removed.
 * @param allRendererKeys Built-in and extension renderer keys to match.
 * @returns Snippet overrides keyed by markdown token type.
 */
export const getSnippetOverrides = (rest, allRendererKeys) => Object.fromEntries(allRendererKeys
    .filter((key) => key in rest && rest[key] != null)
    .map((key) => [key, rest[key]]));
/**
 * Extracts HTML snippet overrides from rest props.
 *
 * @param rest Extra component props after known SvelteMarkdown props are removed.
 * @returns HTML snippet overrides keyed by tag name without the `html_` prefix.
 */
export const getHtmlSnippetOverrides = (rest) => Object.fromEntries(Object.entries(rest)
    .filter(([key, val]) => key.startsWith('html_') && val != null)
    .map(([key, val]) => [key.slice(5), val]));
/**
 * Removes snippet override props from the props forwarded to Parser.
 *
 * @param rest Extra component props after known SvelteMarkdown props are removed.
 * @param allRendererKeys Built-in and extension renderer keys to exclude.
 * @returns Props that should pass through to the rendered markdown tree.
 */
export const getPassThroughProps = (rest, allRendererKeys) => {
    const snippetKeySet = new Set([
        ...allRendererKeys,
        ...Object.keys(rest).filter((key) => key.startsWith('html_'))
    ]);
    return Object.fromEntries(Object.entries(rest).filter(([key]) => !snippetKeySet.has(key)));
};