REAL REA / 6.5.0 / EVIDENCE REPORT
Orbit Shop — REA Tools demo
https://reatools.org/demo/
Your question
How are products loaded and rendered, and what happens when the cart button is clicked?
Trace focus: fetch. First captured node matching the selected focus; no language model was used.
The product list is populated by a client-side JSON request
The page loads app.js. Its loadProducts function requests /demo/catalog.json, waits for a JSON response, and replaces the product container with newly created cards. The runtime capture independently recorded a successful fetch to that path. This is a frontend rendering pipeline; the evidence does not reveal how a remote backend would generate a response.
source-01.js:1–14Data becomes DOM elements without a page reload
For each returned product, the code creates an article, a heading and a price paragraph. Values are assigned through textContent, then appended to the article. replaceChildren replaces the loading placeholder and previous cards. These source operations explain how the supplied product data is rendered. No click or arbitrary code execution was needed for the static REA analysis.
source-01.js:5–13The cart button toggles a local message
The supplied source registers a click listener on #cart and toggles the hidden property of #cart-status. It does not show a cart API call or checkout operation in that handler. This describes the saved source; the initial browser capture did not click the button, and absence of a request is not a proof about other application versions.
source-01.js:15–18What to improve in an independent implementation
Add an explicit HTTP status check, a user-visible error state and an AbortController so abandoned requests can be cancelled. Validate the response shape before rendering. Keep textContent rather than interpreting returned product names as HTML. These are implementation suggestions from the source review, not claims that REA executed or repaired the target.
source-01.js:1–14What the evidence does not establish
This is an owned public demonstration target. It is not a reconstruction of a third-party commercial storefront. The report combines actual REA analysis with a clearly labelled human-written explanation. It does not use a language model, infer a private database schema, verify shopping behavior, or claim that the code is the original unminified project.
Code evidence
fetch → /demo/catalog.json
Static evidence + runtime path matchREA found this request in captured source; a matching path was also observed during the initial browser load.
source-01.js:2–2REA node identity
jsrg_node_fc7515f2549d788ae88700da7e504964abdcc64ff66a578d306caa7279e603e5Function: loadProducts
Static inferenceREA recovered a named function and its original source range. This identifies code to inspect; it does not prove the function ran.
source-01.js:1–14REA node identity
jsrg_node_bd0e7cb8652565aed7bd69d9534e68d434cd1e460c2c9bff0c276568d9f9932cCaptured source
source-01.jshttps://reatools.org/demo/app.js712 bytes
SHA-256: 5f3908c52e899610b6f0aa3e4091c2924b818a03770c09cf5aa8bc2d7ec7326a
async function loadProducts() {
const response = await fetch('/demo/catalog.json');
const products = await response.json();
const container = document.querySelector('#products');
container.replaceChildren(...products.map(product => {
const article = document.createElement('article');
const name = document.createElement('h2');
name.textContent = product.name;
const price = document.createElement('p');
price.textContent = `$${product.price}`;
article.append(name, price);
return article;
}));
}
document.querySelector('#cart').addEventListener('click', () => {
const status = document.querySelector('#cart-status');
status.hidden = !status.hidden;
});
loadProducts();
Scope, uncertainty and limitations
- Capture covers one public page during initial load. Buttons were not clicked and forms were not submitted. Private server code is outside the report.
- REA analyzed bounded captured source files, not the complete original application. Relative imports may be unresolved.
- The selected focus is literal and deterministic. Free-form questions are retained for context; this version has no AI interpretation.
- Static relationship reachability does not establish runtime causality. Runtime corroboration compares request paths only.
- CommonJS and ESM binding relationships were recovered from inert syntax and resolved only within the inventoried artifact container.
- JavaScript and HTML were parsed as inert text; bundle bootstrap code was never executed.
- Static imports, entrypoints, workers, endpoints, and storage relationships do not prove runtime execution.
- Static paths and relationships may remain unresolved when expressions are dynamic or obfuscated.
- Webpack/Rspack factories were recovered from AST literals; REA did not invoke push handlers or bundle bootstrap code.
Evidence identity and reproducibility
Engine: REA 6.5.0. Captured: 2026-10-14T13:43:43.654Z. Analysis duration: 3.0s.
Application: ev_cb3fe33aea689273132195307b301515eb7fd0e9b8848eef5bfb86c79d79f9b7
Trace: ev_745582923468b5587d51c5baa5962b55c16b3abb4c6aa5fcd98c5f9498fdbf0e
Artifact SHA-256: e35391e44b37867465646367e2a876bf7617a189c96b0339e9bf7e6971064af0