remark-corepass/dist/index.js

A Remark plugin to transform CorePass notations into markdown links.

import { visit } from 'unist-util-visit';
import Ican from '@blockchainhub/ican';
const makeLinkNode = (url, text, title) => ({
    type: 'link',
    url,
    title: title || null,
    children: [{ type: 'text', value: text }],
});
const makeTextNode = (text) => ({
    type: 'text',
    value: text,
});
const shortenId = (hash) => `${hash.slice(0, 4)}…${hash.slice(-4)}`;
const corepassPattern = /\[(!?)(((cb|ab|ce)[0-9]{2}[0-9a-f]{40})|((?:[a-z0-9_-]|\p{Emoji})+(?:\.(?:[a-z0-9_-]|\p{Emoji})+)*\.([a-z0-9]+)))@coreid\]/giu;
const isTextNode = (node) => node.type === 'text';
export default function remarkCorepass(options = {}) {
    const defaults = {
        enableIcanCheck: true,
        enableSkippingIcanCheck: true,
    };
    const finalOptions = { ...defaults, ...options };
    return (tree) => {
        visit(tree, 'text', (node, index, parent) => {
            if (!isTextNode(node) || !parent || typeof index !== 'number')
                return;
            if (!('children' in parent) || !Array.isArray(parent.children))
                return;
            const matches = Array.from(node.value.matchAll(corepassPattern));
            const newNodes = [];
            let lastIndex = 0;
            matches.forEach(match => {
                const [fullMatch, skip, fullId, cpId, net0, sld, tld, offset = 0] = match;
                const actualOffset = parseInt(offset, 10);
                if (actualOffset > lastIndex) {
                    newNodes.push(makeTextNode(node.value.slice(lastIndex, actualOffset)));
                }
                const willSkip = finalOptions.enableSkippingIcanCheck && skip === '!';
                const url = `corepass:${fullId.toLowerCase()}`;
                let fullName, displayName;
                if (cpId !== '' && cpId !== undefined) {
                    fullName = fullId.toUpperCase();
                    displayName = shortenId(fullName);
                    if (finalOptions.enableIcanCheck && !willSkip && !Ican.isValid(fullId, true)) {
                        newNodes.push(makeTextNode(`¬${displayName}@coreid`));
                    }
                    else {
                        newNodes.push(makeLinkNode(url, `${displayName}@coreid`, fullName));
                    }
                }
                else {
                    newNodes.push(makeLinkNode(url, `${fullId}@coreid`, fullId));
                }
                lastIndex = actualOffset + fullMatch.length;
            });
            if (lastIndex < node.value.length) {
                newNodes.push(makeTextNode(node.value.slice(lastIndex)));
            }
            if (newNodes.length > 0) {
                parent.children.splice(index, 1, ...newNodes);
            }
        });
    };
}