---
title: FreeSewing in Node.js
---
These instructions explain how you can generate patterns in Node.js.
Whether it's in a backend application or on the command line, all
it takes is a few lines of code — and a couple of dependencies — to
generate a pattern.
:::tip
##### Use FreeSewing.org if you just want a pattern
These instructions are intended for people who want to generate
their own patterns using FreeSewing packages.
If you _just want a sewing pattern created for you,_
you can get all our designs on [FreeSewing.org](https://freesewing.org/),
our website for makers.
:::
## High level overview
To generate a pattern, you will need to:
- Instantiate the pattern (`new ...`)
- Pass it the settings and measurements you want to use (`{ ... }`)
- Load the theme plugin (using `use()`)
- Draft the pattern (using `draft()`)
- Render it to SVG (using `render()`)
Which can be done as a one-liner since `use()`, `draft()` and
`render()` are all chainable, as shown below.
## Code example
```js
import { Aaron } from '@freesewing/aaron' // Design to use
import { pluginTheme as theme } from '@freesewing/plugin-theme' // SVG theme
const svg = new Aaron( // Instantiate pattern
{ // Pass in settings. See reference > core > settings
sa: 10, // Seam allowance
// ...
measurements: { // Pass in measurements
biceps: 387,
chest: 1105,
hips: 928,
hpsToWaistBack: 502,
neck: 420,
shoulderSlope: 13,
shoulderToShoulder: 481,
waistToHips: 139,
}
})
.use(theme) // Load theme plugin
.draft() // Draft the pattern
.render() // Render to SVG
// svg now holds the generated SVG code
console.log(svg)
```
:::note
##### Remarks on the example code
- We are using `@freesewing/aaron` as the design, but you could use any design
- You probably want to [use your own measurements](/reference/settings/measurements)
or you could use [our curated measurements sets](https://freesewing.org/curated-sets) to load measurements.
- We are using `@freesewing/plugin-theme` to theme our SVG, but you
could [pass in your own CSS](/reference/api/svg/style)
:::
## Dependencies
The code above will only work if you've got the required dependencies installed on your system.
Obviously you need Node.js, but you will also need the following packages:
- `@freesewing/core`: Our core library
- `@freesewing/plugin-bundle`: Set of common plugins
- `@freesewing/aaron` or any design you want to use
- Any design on which the design you choose is built. In this case, Aaron depends on `@freesewing/brian`
For the example above, your `package.json` **dependencies** section will look like this:
```json
"dependencies": {
"@freesewing/core": "latest"
"@freesewing/aaron": "latest",
"@freesewing/brian": "latest",
"@freesewing/plugin-theme": "latest"
}
```
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