digitransit-ui/digitransit-component/scripts/generate-readmes

#!/usr/bin/env node

import { readFileSync, writeFileSync } from 'fs-extra';
import { sync } from 'glob';
import { sep, join, parse } from 'path';
import { sync as _sync } from 'load-json-file';
import { build, formats } from 'documentation';

/**
 * When firing `yarn run docs`:
 *   - inside a module, only the docs of that module will be generated
 *   - outside or at the root level it will generate docs for all modules
 */
const currentFolder = process.cwd().split(sep).pop();
const packages = currentFolder.includes('digitransit-component-') ?
    [join(process.cwd(), 'package.json')] :
    sync(join(__dirname, '..', 'packages', 'digitransit-component-*', 'package.json'));

// Template for README Markdown
const installation = readFileSync(join(__dirname, 'installation.md'), 'utf8');

packages.forEach(packagePath => {
    const directory = parse(packagePath).dir;
    const indexPath = join(directory, './src/index.js');
    const pckg = _sync(packagePath);
    const name = pckg.name;

    // Build Documentation
    build(indexPath, {shallow: true}).then(res => {
        if (res === undefined) return console.warning(packagePath);
        console.log('Building Docs: ' + name);

        // Format Markdown
        formats.md(res).then(markdown => {
            markdown = `# ${name}\n\n${markdown}${installation.replace(/{module}/, name)}`;
            writeFileSync(join(directory, 'README.md'), markdown);
        }).catch(error => console.warning(error));
    }).catch(error => console.warning(error));
});