remarkable-plugin-heading-id/dist/src/main.js

## Feature ✨

import { idx, incrementIdx, resetIdx } from "../context";
import { isHeadingOpenToken } from "./utils/isHeadingOpenToken/isHeadingOpenToken";
import { isInline } from "./utils/isInline/isInline";
const headings = ["h1", "h2", "h3", "h4", "h5", "h6"];
export const remarkablePluginHeadingId = (md, options = {}) => {
    const renderer = md.renderer.rules.heading_open;
    const targets = options.targets ?? headings;
    resetIdx();
    md.renderer.rules.heading_open = (tokens, tokensIdx) => {
        const headingOpenToken = tokens[tokensIdx];
        if (!isHeadingOpenToken(headingOpenToken)) {
            throw new Error("remarkablePluginHeadingId should take heading tag token, but got" +
                JSON.stringify(headingOpenToken));
        }
        const defaultResult = renderer(tokens, tokensIdx);
        // TODO textToken is inferred as HeadingOpenToken, but should be inferred TagToken
        const textToken = tokens[tokensIdx + 1];
        if (!isInline(textToken)) {
            throw new Error("remarkablePluginHeadingId should take text token next to heading open token, but got" +
                JSON.stringify(textToken));
        }
        const headingTagContent = textToken.content ?? "";
        const result = (() => {
            const hLevel = `h${headingOpenToken.hLevel}`;
            if (!targets.includes(hLevel)) {
                return defaultResult;
            }
            if (!options.createId) {
                const result = defaultResult.replace(">", ` id="${headingTagContent}">`);
                incrementIdx();
                return result;
            }
            else {
                const result = defaultResult.replace(">", ` id="${options.createId(headingOpenToken.hLevel, headingTagContent, idx)}">`);
                incrementIdx();
                return result;
            }
        })();
        return result;
    };
};