/**
* @author [Tristan Valcke]{@link https://github.com/Itee}
* @license [BSD-3-Clause]{@link https://opensource.org/licenses/BSD-3-Clause}
*
* @module Config-Rollup
* @description The file manage the rollup configuration for build the library using differents arguments. It allow to build with two type of environment (dev and prod), and differents output format.
* Use npm run help to display all available build options.
*
* @requires {@link module: [rollup-plugin-commonjs]{@link https://github.com/rollup/rollup-plugin-commonjs}}
* @requires {@link module: [path]{@link https://nodejs.org/api/path.html}}
* @requires {@link module: [rollup-plugin-node-resolve]{@link https://github.com/rollup/rollup-plugin-node-resolve}}
* @requires {@link module: [rollup-plugin-terser]{@link https://github.com/TrySound/rollup-plugin-terser}}
*/
const packageInfos = require( '../package' )
const path = require( 'path' )
const commonjs = require( '@rollup/plugin-commonjs' )
const { nodeResolve } = require( '@rollup/plugin-node-resolve' )
const terser = require( 'rollup-plugin-terser' ).terser
function _computeBanner ( name, format ) {
const packageName = name || packageInfos.name
let prettyFormat = ''
switch ( format ) {
case 'cjs':
prettyFormat = 'CommonJs'
break
case 'esm':
prettyFormat = 'EsModule'
break
case 'iife':
prettyFormat = 'Standalone'
break
case 'umd':
prettyFormat = 'Universal'
break
default:
throw new RangeError( `Invalid switch parameter: ${format}` )
}
return `console.log('${packageName} v${packageInfos.version} - ${prettyFormat}')`
}
/**
* Will create an appropriate configuration object for rollup, related to the given arguments.
*
* @generator
* @param options
* @return {Array.<json>} An array of rollup configuration
*/
function CreateRollupConfigs ( options ) {
'use strict'
const name = options.name
const input = options.input
const output = options.output
const formats = options.format.split( ',' )
const envs = options.env.split( ',' )
const treeshake = options.treeshake
const fileName = path.basename( input, '.js' )
const configs = []
for ( let formatIndex = 0, numberOfFormats = formats.length ; formatIndex < numberOfFormats ; ++formatIndex ) {
for ( let envIndex = 0, numberOfEnvs = envs.length ; envIndex < numberOfEnvs ; envIndex++ ) {
const env = envs[ envIndex ]
const isProd = ( env.includes( 'prod' ) )
const format = formats[ formatIndex ]
const outputPath = ( isProd ) ? path.join( output, `${fileName}.${format}.min.js` ) : path.join( output, `${fileName}.${format}.js` )
configs.push( {
input: input,
external: [
'fs',
'express',
'http',
'https',
'path',
'itee-validators',
'itee-core',
'itee-database'
],
plugins: [
commonjs( {
include: 'node_modules/**'
} ),
nodeResolve( {
preferBuiltins: true
} ),
isProd && terser()
],
onwarn: ( { loc, frame, message } ) => {
// Ignore some errors
if ( message.includes( 'Circular dependency' ) ) { return }
if ( message.includes( 'plugin uglify is deprecated' ) ) { return }
if ( loc ) {
process.stderr.write( `/!\\ ${loc.file} (${loc.line}:${loc.column}) ${frame} ${message}\n` )
} else {
process.stderr.write( `/!\\ ${message}\n` )
}
},
treeshake: treeshake,
output: {
// core options
file: outputPath,
format: format,
name: name,
globals: {},
// advanced options
paths: {},
banner: ( isProd ) ? '' : _computeBanner( name, format ),
footer: '',
intro: '',
outro: '',
sourcemap: !isProd,
interop: true,
// danger zone
exports: 'auto',
amd: {},
indent: '\t',
strict: true
}
} )
}
}
return configs
}
module.exports = CreateRollupConfigs