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npm-build-module.js
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npm-build-module.js
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#!/usr/bin/env node
var suppress = function(){}
var dotty = require("dotty")
var path = require("path")
var _ = require("underscore")
var detective = require('detective')
var Promise = require("bluebird")
var fs = Promise.promisifyAll(require('fs-extra'))
var argv = require('minimist')(process.argv.slice(2))
var crawlDeps = require("crawl-deps")
var ensureSymlink = require("fs-ensure-symlink")
var ensureLink = require("fs-ensure-link")
if(!argv._[0]) throw new Error("need main file to build module")
var component = {}
var paths = {}
component.main = argv._[0]
component.name = path.basename(component.main, path.extname(component.main))
paths.mainFile = path.resolve(component.main)
paths.nodeModulesDir = path.resolve(path.join(paths.mainFile, "..", "node_modules"))
paths.newModuleDirDest = path.resolve(path.join(paths.mainFile, "..", "node_modules", component.name))
paths.testFile = path.resolve(path.join(paths.mainFile, "..", "test", component.main))
paths.readmeFile = path.resolve(path.join(paths.mainFile, "..", "docs", component.name+".md"))
paths.rootPackageFile = path.resolve(path.join(paths.mainFile, "..", "package.json"))
paths.buildModulesDir = path.resolve(path.join(paths.mainFile, "..", "node_modules_build"))
paths.newModuleDir = path.resolve(path.join(paths.mainFile, "..", "node_modules_build", component.name))
paths.newModuleTestDir = path.resolve(path.join(paths.mainFile, "..", "node_modules_build", component.name, "test"))
paths.newModuleTestFile = path.resolve(path.join(paths.mainFile, "..", "node_modules_build", component.name, "test", component.main))
paths.newModuleReadmeFile = path.resolve(path.join(paths.mainFile, "..", "node_modules_build", component.name, "readme.md"))
paths.newModuleMainFile = path.resolve(path.join(paths.mainFile, "..", "node_modules_build", component.name, component.main))
paths.newModulePackageFile = path.resolve(path.join(paths.mainFile, "..", "node_modules_build", component.name, "package.json"))
fs.existsAsync = function(path){
return fs.openAsync(path, "r").then(function(stats){
return true
}).catch(function(stats){
return false
})
}
function createReadme(){
return fs.existsAsync(paths.readmeFile).then(function(exists){
if(exists){
return ensureLink(paths.readmeFile, paths.newModuleReadmeFile)
}else{
return false
}
})
}
function createPackage(newPackage){
return fs.existsAsync(paths.newModulePackageFile).then(function(exists){
if(exists){
return fs.readFileAsync(paths.newModulePackageFile, "utf8")
.then(JSON.parse)
.then(function(_package){
_.extend(_package, newPackage)
return _package
})
.then(function(_package){
return fs.writeFileAsync(paths.newModulePackageFile, JSON.stringify(_package, null, 2))
})
}else{
return fs.writeFileAsync(paths.newModulePackageFile, JSON.stringify(newPackage, null, 2))
}
})
}
function linkLocalDeps(deps){
return Promise.map(deps, function(dep){
var file = path.resolve(path.join(paths.mainFile, "..", dep+".js"))
// needs to be relative build dirs if needed
// this only works if linked moduled is in the same dir
var newFile = path.resolve(path.join(paths.newModuleDir, dep+".js"))
return ensureLink(file, newFile)
})
}
function createTest(){
return fs.existsAsync(paths.newModuleTestDir).then(function(exists){
if(exists){
return fs.ensureDirAsync(paths.newModuleTestDir).then(function(){
return ensureLink(paths.testFile, paths.newModuleTestFile)
})
}else{
return false
}
})
}
function createMain(){
return fs.existsAsync(paths.newModuleMainFile).then(function(exists){
if(!exists){
return fs.linkAsync(paths.mainFile, paths.newModuleMainFile)
}else{
return false
}
})
}
function setPackageDeps(op){
op.newPackage.dependencies = _.chain(op.deps.npm)
.map(function(dep){
return [dep, op.package.dependencies[dep]]
})
.object()
.value()
var missing = _.difference(op.deps.npm, _.keys(op.newPackage.dependencies))
if(missing.length > 1) throw new Error("missing dependencies: "+ missing.join(", ")+".")
if(missing.length == 1) throw new Error("missing dependency: "+ missing.join(", ")+".")
return op
}
function setPackageDevDeps(op){
if(!op.devDeps) return op
op.newPackage.devDependencies = _.chain(op.devDeps.npm)
.filter(function(dep){
return !_.contains(_.keys(op.newPackage.dependencies), dep)
})
.map(function(dep){
return [dep, op.package.devDependencies[dep]]
})
.object()
.value()
var allDeps = _.flatten([_.keys(op.newPackage.devDependencies), _.keys(op.newPackage.dependencies)])
var missing = _.difference(op.devDeps.npm, allDeps)
if(missing.length > 1) throw new Error("missing devDependencies: "+ missing.join(", ")+".")
if(missing.length == 1) throw new Error("missing devDependency: "+ missing.join(", ")+".")
return op
}
function newPackageDeps(){
return Promise.props({
"newPackage": {
"name": component.name,
"main": component.main
},
"package": fs.readFileAsync(paths.rootPackageFile, "utf8")
.then(JSON.parse),
"deps": crawlDeps(paths.mainFile)
.then(crawlDeps.sort)
.then(crawlDeps.getValues),
"devDeps": fs.lstatAsync(paths.testFile).then(function(){
return crawlDeps(paths.testFile)
.then(crawlDeps.sort)
.then(crawlDeps.getValues)
}).catch(suppress)
})
.then(setPackageDeps)
.then(setPackageDevDeps)
.then(function(op){
if(!op.deps) dotty.put(op, "deps.local", [])
if(!op.devDeps) dotty.put(op, "devDeps.local", [])
// console.log(op.newPackage)
return createPackage(op.newPackage).then(function(){
return linkLocalDeps(_.flatten([op.deps.local, op.devDeps.local]))
})
})
}
function buildModule(){
return Promise.all([
fs.ensureDirAsync(paths.buildModulesDir),
fs.ensureDirAsync(paths.nodeModulesDir),
fs.ensureDirAsync(paths.newModuleDir),
createMain(),
createTest(),
createReadme(),
newPackageDeps(),
ensureSymlink(paths.newModuleDir, paths.newModuleDirDest)
])
}
buildModule()