@telefonica/markdown-confluence-sync/dist/lib/confluence/transformer/support/remark/remark-replace-mermaid.js

Creates/updates/deletes Confluence pages based on markdown files in a directory. Supports Mermaid diagrams and per-page configuration using frontmatter metadata. Works great with Docusaurus

// SPDX-FileCopyrightText: 2024 Telefónica Innovación Digital
// SPDX-License-Identifier: Apache-2.0
import { spawnSync } from "node:child_process";
import { randomBytes } from "node:crypto";
import { rmSync, writeFileSync } from "node:fs";
import { join, resolve } from "node:path";
import { ensureDirSync } from "fs-extra";
import which from "which";
import { replace } from "../../../../support/unist/unist-util-replace.js";
import { DEPENDENCIES_BIN_PATH, PACKAGE_ROOT } from "../../../../util/paths.js";
const AUTOGENERATED_FILE_PREFIX = "autogenerated-";
/**
 * UnifiedPlugin to remove footnotes from the AST.
 */
const remarkReplaceMermaid = function remarkReplaceMermaid(options) {
    return function (tree, file) {
        const outDir = options.outDir;
        replaceMermaidCodeBlocks(tree, file, outDir);
    };
};
/**
 * FIXME: This function was throwing the error TS2589: Type instantiation is excessively deep and possibly infinite, but it's not throwing anymore.
 * Investigate why it was throwing and why it's not throwing anymore.
 */
function replaceMermaidCodeBlocks(tree, file, outDir) {
    replace(tree, isMermaidCode, function (node) {
        try {
            const url = render(outDir, node.value);
            return {
                type: "image",
                url,
            };
        }
        catch (e) {
            // FIXME: replace with file.fail(e as Error, node, "remark-replace-mermaid");
            //  It changes due to lack of time to debug possible issues with mermaid cli.
            file.message(e, node, "remark-replace-mermaid");
            return node;
        }
    });
}
function isMermaidCode(node) {
    return node.type === "code" && node.lang === "mermaid";
}
function render(dir, code) {
    const tempFileName = randomBytes(4).toString("hex");
    const mmdTempFileName = `${tempFileName}.mmd`;
    const mmdcTempFile = join(dir, mmdTempFileName);
    ensureDirSync(dir);
    try {
        // HACK: which is a Common JS module, so we to use default import here.
        const mmdcExec = which.sync("mmdc", {
            path: DEPENDENCIES_BIN_PATH,
        });
        const svgTempFilename = `${AUTOGENERATED_FILE_PREFIX}${tempFileName}.svg`;
        const svgTempFile = join(dir, svgTempFilename);
        writeFileSync(mmdcTempFile, code, { flag: "w+" });
        const puppeteerConfigFile = resolve(join(PACKAGE_ROOT, "config"), "puppeteer-config.json");
        const child = spawnSync(mmdcExec, [
            "--input",
            mmdcTempFile,
            "--output",
            svgTempFile,
            "--backgroundColor",
            "transparent",
            "--puppeteerConfigFile",
            puppeteerConfigFile,
        ], { stdio: [0, "ignore", "pipe"] });
        if (child.status !== 0) {
            throw new Error(`mmdc failed with exit code ${child.status}:\n${child.output}`, {
                cause: child.error,
            });
        }
        return svgTempFile;
    }
    finally {
        rmSync(mmdcTempFile, { force: true });
    }
}
export default remarkReplaceMermaid;