refactor: rename vars && cleaner loop in invertGraph

The invertGraph function in findEntryPoints should be easier to read.

A var was named 'k' so I renamed it to 'filePath' which is easier to
understand

src/index/generateTrees/findEntryPoints.ts

@@ -3,13 +3,13 @@ import { isTestFile } from "./shared/isTestFile";
 
 const invertGraph = (graph: Graph) => {
  const invertedGraph: Graph = {};
- Object.keys(graph).forEach(k => {
- graph[k].forEach(v => {
- if (!(v in invertedGraph)) {
- invertedGraph[v] = [];
+ Object.entries(graph).forEach(([filePath, imports]) => {
+ imports.forEach(importPath => {
+ if (!(importPath in invertedGraph)) {
+ invertedGraph[importPath] = [];
  }
 
- invertedGraph[v].push(k);
+ invertedGraph[importPath].push(filePath);
  });
  });
 
@@ -34,14 +34,14 @@ export function findEntryPoints(graph: Graph) {
 
  const levelMap: Record<number, string[]> = {};
 
- possibleEntryPoints.forEach(k => {
- const n = k.split("/").length;
+ possibleEntryPoints.forEach(filePath => {
+ const n = filePath.split("/").length;
 
  if (!(n in levelMap)) {
  levelMap[n] = [];
  }
 
- levelMap[n].push(k);
+ levelMap[n].push(filePath);
  });
 
  for (let i = 1; i < 10; i++) {