hpcompaq435/accessaudit-scanner

1import { chromium } from "playwright";2import { AxeBuilder } from "@axe-core/playwright";3import type { ScanResult, ScannedViolation, Impact } from "./types.js";4import { computeScore, summarize } from "./score.js";5 6/**7 * The WCAG tag set we test against. axe-core groups rules by these tags.8 * wcag2a/2aa = WCAG 2.0, wcag21aa = 2.1, wcag22aa = 2.2 (the EAA reference level).9 */10const WCAG_TAGS = ["wcag2a", "wcag2aa", "wcag21a", "wcag21aa", "wcag22aa"];11 12export async function scanUrl(url: string): Promise<ScanResult> {13  const browser = await chromium.launch({14    args: ["--no-sandbox", "--disable-dev-shm-usage", "--disable-gpu"],15  });16  try {17    const context = await browser.newContext();18    const page = await context.newPage();19    await page.goto(url, { waitUntil: "networkidle", timeout: 60_000 });20 21    const results = await new AxeBuilder({ page })22      .withTags(WCAG_TAGS)23      .analyze();24 25    const violations: ScannedViolation[] = results.violations.map((v) => ({26      id: v.id,27      impact: (v.impact ?? "minor") as Impact,28      description: v.description,29      help: v.help,30      helpUrl: v.helpUrl,31      wcagTags: v.tags.filter((t) => t.startsWith("wcag")),32      nodeCount: v.nodes.length,33      nodes: v.nodes.slice(0, 10).map((n) => ({34        target: n.target.join(" "),35        html: n.html,36        failureSummary: n.failureSummary ?? "",37      })),38    }));39 40    return {41      url,42      scannedAt: new Date().toISOString(),43      score: computeScore(violations),44      summary: summarize(violations),45      violations,46    };47  } finally {48    await browser.close();49  }50}51