From 0215671c6aab24e1885074761f44c502f0bb00e2 Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Fri, 27 Sep 2019 16:05:42 +0200
Subject: Initial PoC

---
 npmPackages/_scripts/resolve.js | 96 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 npmPackages/_scripts/resolve.js

(limited to 'npmPackages/_scripts/resolve.js')

diff --git a/npmPackages/_scripts/resolve.js b/npmPackages/_scripts/resolve.js
new file mode 100644
index 0000000..e482e72
--- /dev/null
+++ b/npmPackages/_scripts/resolve.js
@@ -0,0 +1,96 @@
+const process = require('process');
+const fs = require('fs');
+
+const {
+    pipeThrough,
+    readPackage
+} = require('./package.js');
+
+const semver = require('./vendor/semver/semver.js');
+
+var jailbreak = false;
+var npmPackages = [];
+
+function resolveDeps(pkgMap, deps, missed, unsatisfied) {
+    for (var d in deps) {
+        if (d in pkgMap) {
+            const actual = pkgMap[d].info.version;
+            var required = deps[d];
+            if (semver.valid(required)) {
+                required = `>=${required}`;
+            }
+            if (!semver.satisfies(actual, required)) {
+                unsatisfied(`want ${d}:"${required}", but "${actual}" provided`);
+            }
+            deps[d] = `file:${pkgMap[d].path}`;
+        } else {
+            missed(`${d}:${deps[d]}`);
+        }
+    }
+
+    return deps;
+}
+
+function resolvePackage(pkg, depPkgs) {
+    const pkgMap = depPkgs.reduce((pkgs, pkg) => {
+        pkgs[pkg.info.name] = pkg;
+        return pkgs;
+    }, {});
+
+    var unsatisfied = [];
+    var missed = [];
+
+    function missedCallback(msg) {
+        missed.push(msg);
+    }
+
+    function unsatisfiedCallback(msg) {
+        unsatisfied.push(msg);
+    }
+
+    pkg.dependencies = resolveDeps(pkgMap, pkg.dependencies, missedCallback, unsatisfiedCallback);
+    pkg.devDependencies = resolveDeps(pkgMap, pkg.devDependencies, missedCallback, unsatisfiedCallback);
+
+    if (missed.length > 0) {
+        console.error(`** ERROR: missing dependencies: ${missed.join('; ')}.`);
+    }
+
+    if (unsatisfied.length > 0) {
+        console.error(`** ${jailbreak ? 'WARNING' : 'ERROR'}: unsatisfied dependencies: ${unsatisfied.join('; ')}.`);
+    }
+
+    if (missed.length > 0) {
+        process.exit(1);
+    }
+
+    if (unsatisfied.length > 0 && !jailbreak) {
+        process.exit(1);
+    }
+
+    return pkg;
+}
+
+const args = process.argv.slice(2);
+
+for (var i = 0; i < args.length; i++) {
+    switch (args[i]) {
+        case '--jailbreak':
+            jailbreak = true;
+            break;
+        default:
+            npmPackages.push(args[i]);
+    }
+}
+
+console.error('Building with:', npmPackages);
+
+Promise.all(npmPackages.map(readPackage)).then((pkgs) => {
+    pipeThrough((pkg, done) => {
+        pkg.dependencies = pkg.dependencies || {};
+        pkg.devDependencies = pkg.devDependencies || {};
+        done(resolvePackage(pkg, pkgs));
+    });
+}).catch((err) => {
+    console.error(err);
+    process.exit(1);
+});
-- 
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