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

test_src/check_diff.cjs

@@ -0,0 +1,45 @@
+// diff the two csv files, and perform a left subtract and right subtract.
+const fsp = require('fs/promises')
+
+async function main(){
+    const file1 = 'success.txt';
+    const file2String = `mime-types
+http-errors
+source-map-support
+compressible
+global-modules
+thenify
+mz
+memory-fs
+pinkie-promise
+pretty-error
+renderkid
+hpack.js
+wbuf
+expand-tilde
+homedir-polyfill
+basic-auth
+for-own
+is-unc-path
+recursive-readdir
+path-root
+cookies
+bufferutil
+utf-8-validate
+easy-table
+is-dotfile`;
+    const file1String = await fsp.readFile(file1, 'utf8');
+    const f1Elements = file1String.split('\n').filter(Boolean);
+    const f2Elements = file2String.split('\n').filter(Boolean);
+    const leftSubtract = f1Elements.filter(x => !f2Elements.includes(x));
+    // const rightSubtract = f2Elements.filter(x => !f1Elements.includes(x));
+    console.log('Left Subtract:f1, not in f2');
+    const leftSubtractString = leftSubtract.join('\n')
+    await fsp.writeFile('left_subtract.txt', leftSubtractString, 'utf8');
+    // console.log('Right Subtract: done, but not in main list', rightSubtract);
+}
+
+
+main().catch(err => {
+    console.error('Error:', err);
+});