T3MP3ST public launch build

bench/cve-zero/samples/GHSA-vv9j-gjw2-j8wp/source/src/util/namespace.ts

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+import { parse } from 'node:path';
+import slash from 'slash';
+import { escapeRegExp, findLast } from 'lodash-es';
+
+type AsNamespaceOptions = {
+  lookups?: string[];
+};
+
+export const defaultLookups = ['.', 'generators', 'lib/generators', 'dist/generators'];
+
+/**
+ * Given a String `filepath`, tries to figure out the relative namespace.
+ *
+ * ### Examples:
+ *
+ *     this.namespace('backbone/all/index.js');
+ *     // => backbone:all
+ *
+ *     this.namespace('generator-backbone/model');
+ *     // => backbone:model
+ *
+ *     this.namespace('backbone.js');
+ *     // => backbone
+ *
+ *     this.namespace('generator-mocha/backbone/model/index.js');
+ *     // => mocha:backbone:model
+ *
+ * @param filepath
+ * @param lookups paths
+ */
+export const asNamespace = (filepath: string, { lookups = defaultLookups }: AsNamespaceOptions): string => {
+  if (!filepath) {
+    throw new Error('Missing file path');
+  }
+
+  // Normalize path
+  let ns = slash(filepath);
+
+  // Ignore path before latest node_modules
+  const nodeModulesPath = '/node_modules/';
+  if (ns.includes(nodeModulesPath)) {
+    ns = ns.slice(ns.lastIndexOf(nodeModulesPath) + nodeModulesPath.length);
+  }
+
+  // Cleanup extension and normalize path for differents OS
+  const parsed = parse(ns);
+  ns = parsed.dir ? `${parsed.dir}/${parsed.name}` : parsed.name;
+
+  // Sort lookups by length so biggest are removed first
+  const nsLookups = [...lookups, '..']
+    .map(found => slash(found))
+    .sort((a, b) => a.split('/').length - b.split('/').length)
+    .toReversed();
+
+  // If `ns` contains a lookup dir in its path, remove it.
+  for (const lookup of nsLookups) {
+    // Only match full directory (begin with leading slash or start of input, end with trailing slash)
+    ns = ns.replaceAll(new RegExp(`(?:/|^)${escapeRegExp(lookup)}(?=/)`, 'g'), '');
+  }
+
+  const folders = ns.split('/');
+  const scope = findLast(folders, folder => folder.startsWith('@'));
+
+  // Cleanup `ns` from unwanted parts and then normalize slashes to `:`
+  ns = ns
+    .replaceAll('//', '') // Remove double `/`
+    .replace(/(.*generator-)/, '') // Remove before `generator-`
+    .replace(/\/(index|main)$/, '') // Remove `/index` or `/main`
+    .replace(/^\//, '') // Remove leading `/`
+    .replaceAll(/\/+/g, ':'); // Replace slashes by `:`
+
+  if (scope) {
+    ns = `${scope}/${ns}`;
+  }
+
+  return ns;
+};