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more bundler fixes

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This commit is contained in:
Leo Horie 2016-07-30 00:48:23 -04:00
parent d0851f8a3b
commit 40b2053895
1 changed files with 15 additions and 7 deletions
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22
bundler/bundle.js
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@ -15,7 +15,7 @@ module.exports = function(input, output, options) {
var globalMatch = data.match(/window\.([\w_$]+)\s*=\s*/)
if (globalMatch) globals[globalMatch[1]] = true
data = data.replace(/((?:var|let|const|)[\t ]*)([\w_$\.]+)(\s*=\s*)require\(([^\)]+)\)/g, function(match, def, variable, eq, dep) {
data = data.replace(/^\s*\/\/[^\n]*/g, "").replace(/((?:var|let|const|)[\t ]*)([\w_$\.]+)(\s*=\s*)require\(([^\)]+)\)/g, function(match, def, variable, eq, dep) {
usedVariables[variable] = usedVariables[variable] ? usedVariables[variable]++ : 1
var filename = new Function("return " + dep).call()
@ -36,7 +36,7 @@ module.exports = function(input, output, options) {
var normalized = path.resolve(dir, filename)
if (modules[normalized] === undefined) {
modules[normalized] = variable
return resolve(path.dirname(dependency), exportCode(dependency, def + variable + eq))
return resolve(path.dirname(dependency), exportCode(dependency, def, variable, eq))
}
else {
if (modules[normalized] !== variable) {
@ -57,19 +57,27 @@ module.exports = function(input, output, options) {
.replace(/\}[\r\n]+\(/g, "}(") // remove space from iife
}
function exportCode(file, assignment) {
function exportCode(file, def, variable, eq) {
var declared = {}
return fixCollisions(fs.readFileSync(file, "utf8"))
.replace(/("|')use strict\1;?\s*/gm, "") // remove extraneous "use strict"
.replace(/module\.exports\s*=\s*/gm, assignment)
.replace(/module\.exports\s*=\s*/gm, def + variable + eq)
.replace(/module\.exports(\.|\[)/gm, function(match, token, length, code) {
if (new RegExp("\\b" + variable + "\\b").test(variable) && !declared[variable]) {
declared[variable] = true
return def + variable + eq + "{}\n" + variable + token
}
return variable + token
})
}
function fixCollisions(code) {
for (var variable in usedVariables) {
var collision = new RegExp("\\b" + variable + "\\b(?![\"'`])", "g")
var collision = new RegExp("([^\\.])" + variable + "\\b(?![\"'`])", "g")
var exported = new RegExp("module\\.exports\\s*=\\s*" + variable)
if (collision.test(code) && !exported.test(code) && !globals[variable.match(/[^\.]+/)]) {
var fixed = variable + usedVariables[variable]++
code = code.replace(collision, fixed)
code = code.replace(collision, "$1" + fixed)
}
}
return code
@ -83,7 +91,7 @@ module.exports = function(input, output, options) {
function bundle(input, output) {
console.log("bundling...")
var code = setVersion(resolve(path.dirname(input), fs.readFileSync(input, "utf8")))
if (new Function(code)) fs.writeFileSync(output, "new function() {" + code + "}", "utf8")
if (new Function(code)) fs.writeFileSync(output, "new function() {\n" + code + "\n}", "utf8")
console.log("done")
}