aubade/src/manifest/stringify.js

filesystem-based content processor

export function stringify(data, indent = 0) {
    const TAB = '  '.repeat(indent);
    const items = Object.entries(data).map(([key, value]) => {
        if (value === undefined)
            return undefined;
        if (Array.isArray(value)) {
            if (value.every((v) => typeof v === 'string' || typeof v === 'boolean' || v === null)) {
                return `${TAB}${key}: [${value.map(format).join(', ')}]`;
            }
            const list = value.map((v) => {
                if (typeof v === 'string' || typeof v === 'boolean' || v === null) {
                    return `${TAB}- ${format(v)}`;
                }
                return modify(stringify(v, indent + 1), (line, i) => `${'  '.repeat(indent + 1)}${i === 0 ? '- ' : '  '}${line.trimStart()}`);
            });
            return `${TAB}${key}:\n${list.join('\n')}`;
        }
        if (typeof value === 'object' && value != null) {
            return `${TAB}${key}:\n${stringify(value, indent + 1)}`;
        }
        if (typeof value === 'string' && value.includes('\n')) {
            return `${TAB}${key}: |\n${modify(value, (line) => TAB + '  ' + line)}`;
        }
        return `${TAB}${key}: ${format(value)}`;
    });
    return items.filter(Boolean).join('\n');
}
function format(input) {
    const value = String(input).trim();
    if (/[:{}\[\],&*#?|<>=!%@\\"]/.test(value) && !value.includes(':/')) {
        return `"${value.replace(/\\/g, '\\\\').replace(/"/g, '\\"')}"`;
    }
    return value;
}
function modify(source, fn) {
    return source
        .split('\n')
        .map((line, index) => fn(line, index))
        .join('\n');
}