dprint - JS Formatter

JS formatter for dprint Wasm plugins.

Setup

Deno:

deno add npm:@dprint/formatter

Node.js:

npm i @dprint/formatter

Use

The context API allows you to manage multiple plugins with shared configuration and automatic plugin selection based on file type:

import { createContext } from "@dprint/formatter";
import * as json from "@dprint/json";
import * as markdown from "@dprint/markdown";
import * as typescript from "@dprint/typescript";
import fs from "node:fs";

const context = createContext({
  // global config
  indentWidth: 2,
  lineWidth: 80,
});

// note: some plugins might have a getBuffer() export instead
context.addPlugin(fs.readFileSync(typescript.getPath()), {
  semiColons: "asi",
});
context.addPlugin(fs.readFileSync(json.getPath()));
context.addPlugin(fs.readFileSync(markdown.getPath()));

console.log(context.formatText({
  filePath: "config.json",
  fileText: "{\"a\":1}",
}));

console.log(context.formatText({
  filePath: "app.ts",
  fileText: "const x=1",
}));

The context also handles host formatting automatically, so embedded code blocks (like JSON in Markdown) will be formatted by the appropriate plugin.

Plugin NPM Packages

Note: In the future I will ensure plugins are published to JSR as well.

• @dprint/json
• @dprint/typescript
• @dprint/markdown
• @dprint/toml
• @dprint/dockerfile
• @dprint/biome
• @dprint/oxc
• @dprint/mago
• @dprint/ruff