datocms-html-to-structured-text/dist/index.js

Convert HTML (or a `hast` syntax tree) to a valid DatoCMS Structured Text `dast` document

import minify from 'rehype-minify-whitespace';
import visitNode from './visit-node.js';
import visitChildren from './visit-children.js';
import { handlers } from './handlers.js';
import { fromParse5 } from 'hast-util-from-parse5';
import { fromDom } from 'hast-util-from-dom';
import { defaultMarks, } from 'datocms-structured-text-utils';
export async function htmlToStructuredText(html, options = {}) {
    if (typeof DOMParser === 'undefined') {
        throw new Error('DOMParser is not available. Consider using `parse5ToStructuredText` instead!');
    }
    const document = new DOMParser().parseFromString(html, 'text/html');
    const tree = fromDom(document);
    return hastToStructuredText(tree, options);
}
export async function parse5ToStructuredText(document, options = {}) {
    const tree = fromParse5(document);
    return hastToStructuredText(tree, options);
}
export async function hastToStructuredText(tree, options = {}) {
    minify({ newlines: options.newlines === true })(tree);
    const createNode = (type, props) => {
        return { type, ...props };
    };
    if (typeof options.preprocess === 'function') {
        options.preprocess(tree);
    }
    const rootNode = await visitNode(createNode, tree, {
        parentNodeType: 'root',
        parentNode: null,
        defaultHandlers: handlers,
        handlers: Object.assign({}, handlers, options.handlers || {}),
        wrapText: true,
        allowedBlocks: Array.isArray(options.allowedBlocks)
            ? options.allowedBlocks
            : ['blockquote', 'code', 'heading', 'link', 'list'],
        allowedMarks: Array.isArray(options.allowedMarks)
            ? options.allowedMarks
            : defaultMarks,
        allowedHeadingLevels: Array.isArray(options.allowedHeadingLevels)
            ? options.allowedHeadingLevels
            : [1, 2, 3, 4, 5, 6],
        global: {
            baseUrl: null,
            baseUrlFound: false,
            ...(options.shared || {}),
        },
    });
    if (rootNode && !Array.isArray(rootNode) && rootNode.type === 'root') {
        return {
            schema: 'dast',
            document: rootNode,
        };
    }
    return null;
}
export { visitNode, visitChildren };
export * from './types.js';
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