bannerjs

Add a banner to a string. Get one-line/multi-line comment banner based on package.json.

Install

This package is ESM only: Node 14+ is needed to use it and it must be import instead of require.

npm install bannerjs --save

One-line results in:

/*! bannerjs v1.0.8 | MIT (c) 2016 kenny wang <wowohoo@qq.com> | https://github.com/jaywcjlove/bannerjs */

Multi-line results in:

/*!
 * bannerjs v1.0.0
 * Add a banner to a string. Get one-line/multi-line comment banner based on package.json.
 * 
 * Copyright (c) 2016 kenny wang <wowohoo@qq.com>
 * https://github.com/jaywcjlove/bannerjs
 *
 * Licensed under the MIT license.
 */

Structure

The following keys should be defined in package.json:

{
  "name": "bannerjs",
  "version": "1.0.0",
  "description": "Add a banner to a string. Get one-line/multi-line comment banner based on package.json.",
  "license": "MIT",
  "author": {
    "name": "kenny wang"
  },
  "repository": {
    "type": "git",
    "url": "https://github.com/jaywcjlove/bannerjs.git"
  }
}

author value can be defined like object or simply string too.

Use

option

multibanner(option) Multi-line results
onebanner(option) One-line results

var banner = require('bannerjs');
bannerjs.multibanner({
  author:"banner.js",
  homepage:"http://....",
  name:"banner.js",
  license:"MIT",
  version:1.2.3,
  description:"description"
})

API

import { PackageJson } from 'types-package-json';
export * from './cli.js';

export declare function getPackage(rootPath?: string): PackageJson;
export declare function onebanner(option?: PackageJson, rootPath?: string): string;
export declare function multibanner(option?: PackageJson, rootPath?: string): string;

Use in gulp

bannerjs.multibanner() Multi-line results
bannerjs.onebanner() One-line results

var gulp = require('gulp');
var banner = require('gulp-banner');
var bannerjs = require('bannerjs');

gulp.task('default', function() {
  gulp.src('./test.js')
    .pipe(banner(bannerjs.multibanner()))
    .pipe(gulp.dest('dist/'));
});

Use in Node

var fs = require('fs');
var banner = require('bannerjs');
var uglify = require('uglify-js')

var code = fs.readFileSync('src/test.js', 'utf-8')
var minified = banner.onebanner() + '\n' + uglify.minify(code, {
  fromString: true,
  output: {
    ascii_only: true
  }
}).code;

fs.writeFileSync('src/test.js', minified);

Use in Rollup

import banner from 'bannerjs';

// rollup.config.js
export default {
  input: 'src/main.js',
  output: {
    file: 'bundle.js',
    format: 'cjs',
    banner: banner.multibanner()
  }
};

Command Line

Usage: bannerjs

Pipe Usage: bannerjs

Options:

 -m --multi     Output multi-line results
 -o --one       Output one-line results

You can easilly pipe unix commands together like:

cat my-js.js | bannerjs -o | uglify-js > my-js.min.js

Npm Script

{
  "scripts":{
    "build:min": "cat my-js.js | uglifyjs | bannerjs -o > dist/my-js.min.js",
    "build:dist": "cat my-js.js | bannerjs -m | uglifyjs -b beautify=true --comments 'all' > dist/my-js.js "
  }
}

License

MIT license