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1.8 KiB

const fs = require('fs')
const path = require('path')
const rollup = require('rollup')
const babel = require('rollup-plugin-babel')
const uglify = require('rollup-plugin-uglify')
const resolve = require('rollup-plugin-node-resolve')
const commonjs = require('rollup-plugin-commonjs')
const version = process.env.VERSION || require('./package.json').version
const banner =
'/*!\n' +
' * Vue-Lazyload.js v' + version + '\n' +
' * (c) ' + new Date().getFullYear() + ' Awe <hilongjw@gmail.com>\n' +
' * Released under the MIT License.\n' +
' */\n'
async function build (options, output) {
try {
const bundle = await rollup.rollup(options)
let { code } = await bundle.generate({
format: output.format,
name: 'VueLazyload'
})
code = rewriteVersion(code)
await write(path.resolve(__dirname, output.filename), code)
} catch (e) {
console.error(e)
}
}
function rewriteVersion (code) {
return code.replace('__VUE_LAZYLOAD_VERSION__', version)
}
function getSize (code) {
return (code.length / 1024).toFixed(2) + 'kb'
}
function blue (str) {
return '\x1b[1m\x1b[34m' + str + '\x1b[39m\x1b[22m'
}
function write (dest, code) {
return new Promise(function (resolve, reject) {
code = banner + code
fs.writeFile(dest, code, function (err) {
if (err) return reject(err)
console.log(blue(dest) + ' ' + getSize(code))
resolve()
})
})
}
build({
input: path.resolve(__dirname, 'src/index.js'),
plugins: [
resolve(),
commonjs(),
babel({ runtimeHelpers: true }),
uglify()
]
}, {
format: 'umd',
filename: 'vue-lazyload.js'
})
build({
input: path.resolve(__dirname, 'src/index.js'),
plugins: [
resolve(),
commonjs(),
babel({ runtimeHelpers: true })
]
}, {
format: 'es',
filename: 'vue-lazyload.esm.js'
})