rollup-plugin-eula

Stamps the copyright years into a license template at build time and writes the result into the build output. The tracked template is never modified.

Version 1.x rewrote the license file in place, which destroyed the {{year}} placeholder in any working tree that ran a build. Version 2 takes an explicit input template and output path instead, so the source file keeps its placeholders permanently and the stamped copy lands next to the other build artifacts.

Installation

npm install rollup-plugin-eula

Usage

// rollup.config.js
import eula from "rollup-plugin-eula";

export default {
	plugins: [
		eula({
			input: "EULA.txt",                  // tracked template: "COPYRIGHT (C) {{startYear}}-{{year}} EXAMPLE INC."
			output: "_build/EULA.txt",          // stamped copy written here
			startYear: 2010
		})
	]
};

Options

| Option | Required | Description | | ----------- | -------- | ----------- | | input | yes | Path to the tracked license template. Must contain {{year}}; may contain {{startYear}}. | | output | yes | Path to write the stamped license to. Must differ from input; parent directories are created. | | startYear | no | Value for the {{startYear}} placeholder. Required if the template uses it, rejected if it does not. |

Any misconfiguration or io failure throws and fails the build — a shipped artifact must never carry an unstamped or missing license.

The renderLicense(template, startYear) function is also exported for use outside rollup.

Development

npm install
npm test        # vitest
npm run coverage
npm run lint