[add] implement vulnerability checking and advisory fetching, enhance repo processing, and add utility functions

src_vuln/lib.mjs

@@ -0,0 +1,26 @@
+import assert from "assert";
+
+/**
+ * Bifurcate an array into two arrays based on a predicate function.
+ * @template T
+ * @param {T[]} arr 
+ * @param {(T)=>boolean} predicate 
+ * @returns {[T[], T[]]}
+ */
+export function bifurcateArray(arr, predicate) {
+    const truthy = [];
+    const falsy = [];
+    for (const item of arr) {
+        if (predicate(item)) {
+            truthy.push(item);
+        } else {
+            falsy.push(item);
+        }
+    }
+    return [truthy, falsy];
+}
+export function getGithubTokenFromEnvironment() {
+    assert(process.env.GITHUB_TOKEN, "No token :(");
+    const githubToken = process.env.GITHUB_TOKEN;
+    return githubToken;
+}