--- /dev/null
+"use strict";
+
+var path = require("path"),
+ fs = require("fs"),
+ pkg = require(path.join(__dirname, "..", "package.json"));
+
+// ensure that there is a node_modules folder for cli dependencies
+try { fs.mkdirSync(path.join(__dirname, "..", "cli", "node_modules")); } catch (e) {/**/}
+
+// check version scheme used by dependents
+if (!pkg.versionScheme)
+ return;
+
+var warn = process.stderr.isTTY
+ ? "\x1b[30m\x1b[43mWARN\x1b[0m \x1b[35m" + path.basename(process.argv[1], ".js") + "\x1b[0m"
+ : "WARN " + path.basename(process.argv[1], ".js");
+
+var basePkg;
+try {
+ basePkg = JSON.parse(fs.readFileSync(path.join(__dirname, "..", "..", "package.json")));
+} catch (e) {
+ return;
+}
+
+[
+ "dependencies",
+ "devDependencies",
+ "optionalDependencies",
+ "peerDependencies"
+]
+.forEach(function(check) {
+ var version = basePkg && basePkg[check] && basePkg[check][pkg.name];
+ if (typeof version === "string" && version.charAt(0) !== pkg.versionScheme)
+ process.stderr.write(pkg.name + " " + warn + " " + pkg.name + "@" + version + " is configured as a dependency of " + basePkg.name + ". use " + pkg.name + "@" + pkg.versionScheme + version.substring(1) + " instead for API compatibility.\n");
+});