mithril-vndb/bundler/bundler.js
2016-04-20 20:02:37 -04:00

38 lines
1.2 KiB
JavaScript

"use strict"
var fs = require("fs")
var path = require("path")
var modules = {}
function resolve(dir, data) {
var replacements = []
data = data.replace(/((?:var|let|const|)\s*)([\w_$]+)(\s*=\s*)require\(([^\)]+)\)/g, function(match, def, variable, eq, dep) {
var filename = new Function("return " + dep).call()
var pathname = path.dirname(filename)
var normalized = path.normalize(dir + "/" + filename)
if (modules[normalized] === undefined) {
modules[normalized] = variable
return resolve(pathname,
fs.readFileSync(dir + "/" + filename + ".js", "utf8")
.replace(/"use strict"\s*/gm, "")
.replace(/module\.exports\s*=\s*/gm, def + variable + eq)
//.replace(/module\.exports(\.[\w_$]|\["[^\"]"\])/, def + variable + eq + "{}\n" + variable + "$1")
)
}
else {
if (modules[normalized] !== variable) {
replacements.push({variable: variable, replacement: modules[normalized]})
}
return ""
}
})
if (replacements.length > 0) {
for (var i = 0; i < replacements.length; i++) {
data = data.replace(new RegExp("\\b" + replacements[i].variable + "\\b", "g"), replacements[i].replacement)
}
}
return data
}
fs.writeFileSync("mithril.min.js", resolve(".", fs.readFileSync("index.js", "utf8")), "utf8")