First upload version 0.0.1

node_modules/cmake-js/lib/locateNAN.js

@@ -0,0 +1,63 @@
+'use strict'
+const fs = require('fs-extra')
+const path = require('path')
+
+const isNANModule = async function (dir) {
+	const h = path.join(dir, 'nan.h')
+	try {
+		const stat = await fs.stat(h)
+		return stat.isFile()
+	} catch (e) {
+		return false
+	}
+}
+
+async function isNodeJSProject(dir) {
+	const pjson = path.join(dir, 'package.json')
+	const node_modules = path.join(dir, 'node_modules')
+	try {
+		let stat = await fs.stat(pjson)
+		if (stat.isFile()) {
+			return true
+		}
+		stat = await fs.stat(node_modules)
+		if (stat.isDirectory()) {
+			return true
+		}
+	} catch (e) {
+		// Ignore
+	}
+	return false
+}
+
+const locateNAN = (module.exports = async function (projectRoot) {
+	if (locateNAN.__projectRoot) {
+		// Override for unit tests
+		projectRoot = locateNAN.__projectRoot
+	}
+
+	let result = await isNodeJSProject(projectRoot)
+	if (!result) {
+		return null
+	}
+
+	const nanModulePath = path.join(projectRoot, 'node_modules', 'nan')
+	result = await isNANModule(nanModulePath)
+	if (result) {
+		return nanModulePath
+	}
+
+	// Goto upper level:
+	return await locateNAN(goUp(projectRoot))
+})
+
+function goUp(dir) {
+	const items = dir.split(path.sep)
+	const scopeItem = items[items.length - 2]
+	if (scopeItem && scopeItem[0] === '@') {
+		// skip scope
+		dir = path.join(dir, '..')
+	}
+	dir = path.join(dir, '..', '..')
+	return path.normalize(dir)
+}