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