@diplodoc/transform/lib/plugins/meta.js

A simple transformer of text in YFM (Yandex Flavored Markdown) to HTML

"use strict";
const js_yaml_1 = require("js-yaml");
/* eslint-disable @typescript-eslint/no-explicit-any */
const SEP = '---';
const meta = (md) => {
    const mdAny = md;
    mdAny.meta = mdAny.meta || {};
    const getLine = (state, line) => state.src.slice(state.bMarks[line], state.eMarks[line]);
    md.block.ruler.before('code', 'meta', (state, startLine, endLine) => {
        if (startLine !== 0 || state.blkIndent !== 0) {
            return false;
        }
        if (state.tShift[startLine] < 0) {
            return false;
        }
        if (getLine(state, startLine).trim() !== SEP) {
            return false;
        }
        let line = startLine + 1;
        const lines = [];
        let found = false;
        while (line < endLine) {
            const str = getLine(state, line);
            if (str.trim() === SEP) {
                found = true;
                break;
            }
            if (state.tShift[line] < 0) {
                return false;
            }
            lines.push(str);
            line++;
        }
        if (!found) {
            return false;
        }
        let data;
        try {
            data = (0, js_yaml_1.load)(lines.join('\n')) || {};
        }
        catch (_a) {
            return false;
        }
        if (typeof data !== 'object' || data === null || Array.isArray(data)) {
            return false;
        }
        mdAny.meta = data;
        state.line = line + 1;
        return true;
    }, { alt: [] });
};
module.exports = meta;
//# sourceMappingURL=meta.js.map