fix: change lifecycle order

Closes #3.

lib/index.js

@@ -47,6 +47,25 @@ internals.queue = (tree) => {
     return topo.nodes;
 };
 
+internals.runScript = (stage, { childPkg, path, cwd }) => {
+
+    console.log();
+    console.log(`==========> ${stage} ${path}...`);
+
+    Npm.runScript(childPkg, stage, Path.join(cwd, path), {
+        dir: cwd,
+        log: Object.assign({
+            pause: () => {},
+            clearProgress: () => {},
+            showProgress: () => {},
+            verbose: () => {},
+            silly: () => {},
+            resume: () => {}
+        }, console),
+        config: {}
+    });
+};
+
 exports.run = (cmd = 'install') => {
 
     const cwd = process.cwd();
@@ -56,9 +75,9 @@ exports.run = (cmd = 'install') => {
     const tree = Npm.logicalTree(pkg, shrinkwrap);
     const queue = internals.queue(tree);
 
-    const allowed = pkg.allowScripts || {};
+    const allowScripts = pkg.allowScripts || {};
 
-    queue
+    const allowedScripts = queue
         .map((path) => {
 
             const childPkg = require(Path.join(cwd, path, 'package.json'));
@@ -73,46 +92,17 @@ exports.run = (cmd = 'install') => {
 
             const name = childPkg.name;
 
-            if (allowed[name] === undefined) {
+            if (allowScripts[name] === undefined) {
                 throw new Error(`No entry for ${name}`);
             }
 
-            if (!allowed[name]) {
+            if (!allowScripts[name]) {
                 console.warn(`==========> skip ${path} (because it is not allowed in package.json)`);
             }
 
-            return allowed[name];
-        })
-        .forEach(([path, childPkg]) => {
-
-            console.log(`==========> install ${path}...`);
-
-            Npm.runScript(childPkg, 'install', Path.join(cwd, path), {
-                dir: cwd,
-                log: Object.assign({
-                    pause: () => {},
-                    clearProgress: () => {},
-                    showProgress: () => {},
-                    verbose: () => {},
-                    silly: () => {},
-                    resume: () => {}
-                }, console),
-                config: {}
-            });
-
-            console.log(`==========> postinstall ${path}...`);
-
-            Npm.runScript(childPkg, 'postinstall', Path.join(cwd, path), {
-                dir: cwd,
-                log: Object.assign({
-                    pause: () => {},
-                    clearProgress: () => {},
-                    showProgress: () => {},
-                    verbose: () => {},
-                    silly: () => {},
-                    resume: () => {}
-                }, console),
-                config: {}
-            });
+            return allowScripts[name];
         });
+
+    allowedScripts.forEach(([path, childPkg]) =>  internals.runScript('install', { childPkg, path, cwd }));
+    allowedScripts.forEach(([path, childPkg]) =>  internals.runScript('postinstall', { childPkg, path, cwd }));
 };