/**
* @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: [path]{@link https://nodejs.org/api/path.html}}
* @requires {@link module: [rollup-plugin-commonjs]{@link https://github.com/rollup/rollup-plugin-commonjs}}
* @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}}
*
*/
/* eslint-env node */
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: [
'path',
'buffer',
'fs',
'stream',
'crypto',
'itee-validators',
'itee-utils',
'itee-core'
],
plugins: [
commonjs( {
include: 'node_modules/**'
} ),
nodeResolve( {
preferBuiltins: true
} ),
isProd && terser()
],
onwarn: ( {
loc,
frame,
message
} ) => {
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