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index.js
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index.js
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// src/index.ts
import _traverse from "@babel/traverse";
import fs3 from "node:fs";
import nodePath from "node:path";
// src/nodePath.ts
function isLinkNode(path2) {
return path2.isJSXElement() && path2.get("openingElement").get("name").isJSXIdentifier({ name: "Link" });
}
function parseLinkNode(linkNodePath) {
let href = "";
let text = "";
linkNodePath.traverse({
enter(path2) {
if (path2.isJSXAttribute()) {
const name = path2.get("name");
const value = path2.get("value");
if (name.isJSXIdentifier({ name: "href" }) && value.isStringLiteral()) {
href = value.node.value;
}
}
if (path2.isJSXText()) {
text = path2.node.value;
}
}
});
return { href, text };
}
function isRouterNode(path2) {
return path2.isCallExpression() && path2.get("callee").isMemberExpression() && path2.get("callee.object").find((p) => p.isIdentifier({ name: "router" })) && (path2.get("callee.property").find((p) => p.isIdentifier({ name: "push" })) || path2.get("callee.property").find((p) => p.isIdentifier({ name: "replace" })));
}
function parseRouterArguments(routerPath) {
routerPath.assertCallExpression();
const args = routerPath.get("arguments");
const urlStringOrUrlObject = args[0];
if (urlStringOrUrlObject.isStringLiteral()) {
const url = urlStringOrUrlObject.node.value;
return url;
}
return "";
}
function isInJSXElement(routerPath) {
routerPath.assertCallExpression();
return routerPath.find((p) => p.isJSXElement());
}
function isInArrowFunctionExpression(routerPath) {
routerPath.assertCallExpression();
return routerPath.find((p) => p.isArrowFunctionExpression());
}
function isInFunctionDeclaration(routerPath) {
routerPath.assertCallExpression();
return routerPath.find((p) => p.isFunctionDeclaration());
}
function getFunctionName(routerPath) {
routerPath.assertCallExpression();
let functionName = "";
routerPath.find((p) => {
if (p.isFunctionDeclaration()) {
functionName = p.node.id?.name;
return true;
}
return false;
});
return functionName;
}
function parseInLineJSXRouterNode(routerPath) {
routerPath.assertCallExpression();
let handlerName = "";
routerPath.findParent((p) => {
if (p.isJSXAttribute()) {
handlerName = p.node.name.name;
return false;
}
return false;
});
return handlerName;
}
// src/ast.ts
import { parse } from "@babel/parser";
import fs from "node:fs";
function getJsxAST(path2) {
const code = fs.readFileSync(path2, "utf-8");
return parse(code, {
sourceType: "module",
plugins: ["jsx"]
});
}
// src/graph.ts
import fs2 from "node:fs";
var Graph = class {
ajdList;
constructor() {
this.ajdList = /* @__PURE__ */ new Map();
}
addNode(url) {
this.ajdList.set(url, []);
}
addEdge(startURL, edge) {
const visitedEdges = this.ajdList.get(startURL) || [];
visitedEdges.push(edge);
this.ajdList.set(startURL, visitedEdges);
}
isCycle(startURL, edge) {
const visitedEdges = this.ajdList.get(startURL) || [];
return visitedEdges.some((visitedEdge) => {
return visitedEdge.endURL === edge.endURL && visitedEdge.trigger === edge.trigger;
});
}
drawMermaidGraph() {
let mermaidGraph = "flowchart TB\n";
this.ajdList.forEach((edges, startURL) => {
edges.forEach((edge) => {
mermaidGraph += `${startURL} -->|${edge.trigger}| ${edge.endURL}
`;
});
});
const html = `<!DOCTYPE html>
<html lang="en">
<head>
<script type="module">
import mermaid from "https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.esm.min.mjs";
</script>
</head>
<body>
<pre class="mermaid">
${mermaidGraph}
</pre>
</body>
</html>
`;
fs2.writeFileSync("graph.html", html);
}
};
var graph = new Graph();
// src/constants.ts
import path from "node:path";
var APP_PATH_WITHOUT_SRC = path.normalize(path.join(process.cwd(), "app"));
var APP_PATH_WITH_SRC = path.normalize(path.join(process.cwd(), "src", "app"));
// src/index.ts
var traverse = _traverse.default;
var APP_FOLDER_PATH = "";
function start({ entryPagePath }) {
if (!entryPagePath) {
if (fs3.existsSync(APP_PATH_WITH_SRC)) {
entryPagePath = APP_PATH_WITH_SRC;
} else if (fs3.existsSync(APP_PATH_WITHOUT_SRC)) {
entryPagePath = APP_PATH_WITHOUT_SRC;
} else {
console.error("Can't find entry page file. Use --entry flag to specify");
return;
}
}
if (!fs3.existsSync(entryPagePath)) {
console.error("Can't find entry page file");
return;
}
APP_FOLDER_PATH = nodePath.normalize(nodePath.join(entryPagePath.split("app")[0], "app"));
recursive(nodePath.normalize(entryPagePath));
graph.drawMermaidGraph();
}
function getDynamicRouteFolder(filePath) {
const paths = filePath.replace("/page.tsx", "").split("/");
paths.pop();
const folderPath = [...paths].join("/");
let dynamicRoute = null;
fs3.readdirSync(folderPath).forEach((file) => {
if (file.startsWith("[") && file.endsWith("]")) {
dynamicRoute = folderPath + "/" + file;
}
});
return dynamicRoute;
}
function recursive(filePath) {
if (!fs3.existsSync(filePath)) {
const folderName = getDynamicRouteFolder(filePath);
if (folderName) {
filePath = nodePath.join(folderName, "page.tsx");
} else {
console.error(filePath, "File does not exist");
return;
}
}
const ast = getJsxAST(filePath);
let componentName = "";
traverse(ast, {
enter(path2) {
if (path2.isExportDefaultDeclaration()) {
path2.traverse({
enter(childPath) {
if (childPath.isFunctionDeclaration()) {
componentName = childPath.node.id.name;
childPath.stop();
path2.stop();
}
}
});
}
}
});
traverse(ast, {
enter(path2) {
let nextURL = "";
let trigger = "";
if (isRouterNode(path2)) {
if (isInJSXElement(path2)) {
if (isInArrowFunctionExpression(path2)) {
trigger = parseInLineJSXRouterNode(path2);
nextURL = parseRouterArguments(path2);
}
}
if (!isInJSXElement(path2) && isInFunctionDeclaration(path2)) {
trigger = getFunctionName(path2);
nextURL = parseRouterArguments(path2);
}
}
if (isLinkNode(path2)) {
const linkInfo = parseLinkNode(path2);
nextURL = linkInfo.href;
trigger = linkInfo.text;
}
if (nextURL && trigger) {
const startURL = nodePath.dirname(filePath).replace(APP_FOLDER_PATH, "") || "/";
if (graph.isCycle(startURL, { startURL, endURL: nextURL, trigger })) {
return;
}
graph.addEdge(startURL, {
startURL,
endURL: nextURL,
trigger
});
const nextFilePath = nodePath.join(APP_FOLDER_PATH, nextURL, "page.tsx");
recursive(nextFilePath);
}
}
});
}
export {
start
};