#220 · Backend Framework Tools Developer Tool

Node Converter

Convert common Node.js module and asynchronous patterns with browser-side migration assistance. Supported operations include CommonJS and ESM conversion, require and import rewriting, module.exports and export conversion, callback-to-Promise skeletons, Promise chains to async/await, and basic filesystem modernization.

Developer Input

Node conversion input

Node.js source code

const fs = require('fs');
const path = require('path');
function load(file, callback) {
  fs.readFile(file, 'utf8', (error, data) => {
    if (error) return callback(error);
    callback(null, JSON.parse(data));
  });
}
module.exports = { load };

Conversion type

Target Node version

Preserve comments Add required imports Mark manual review items Auto-run while typing

How to use this developer tool

Paste Node.js source.
Select one conversion mode and target version.
Enable required-import and manual-review annotations.
Run the converter and test the result in the target runtime.

What this developer tool does

The converter performs conservative source migrations and returns compatibility notes for patterns that cannot be rewritten safely.

Detect module and async patterns → apply selected transformation → add compatibility helpers → annotate unsupported code → summarize breaking changes.

Dynamic require, conditional exports, event-driven callbacks, streams, and circular dependencies require manual review.

Example

CommonJS requires and module.exports can be converted to ESM imports and named exports, with __dirname compatibility notes when needed.

Tips for better output

Convert one concern at a time.
Update package.json module type after ESM migration.
Check file extensions in relative imports.
Run tests after async conversions.

FAQ

How do I convert CommonJS to ES modules online?

Select CommonJS to ES Modules to rewrite straightforward require and module.exports patterns.

Can I convert require() calls to import statements?

Yes. Static top-level require calls are converted; dynamic requires are marked for manual review.

How do I convert Node callbacks to Promises?

Choose Callback to Promise skeleton to generate a conservative Promise wrapper for common callback shapes.

Can this tool convert fs methods to fs/promises?

It converts selected synchronous or callback filesystem patterns into async skeletons where safe.

Does Node Converter update package.json automatically?

It provides package.json migration notes, while the pasted source output remains the primary converted artifact.

Related developer tools

Node Checker Node Generator Node Formatter Node Parser

Conversion coverage

Area	Coverage
Modules	CommonJS and ESM
Async	Callbacks, Promises, async/await
Filesystem	Selected fs modernization
Language	Basic JavaScript and TypeScript cleanup

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