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Copy pathcompare.ts
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464 lines (421 loc) · 14.3 KB
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import { spawnSync } from "node:child_process";
import { mkdirSync, readFileSync, rmSync, statSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import process from "node:process";
import puppeteer from "puppeteer";
import {
createExtractorScript,
flattenSemanticTree,
summarizeSemanticTree,
type SemanticNode,
} from "../src/index";
type Comparison = {
url: string;
axLite: ReturnType<typeof summarizeSemanticTree>;
axLiteNormalized: NormalizedSummary;
agentBrowser: {
lineCount: number;
roleCounts: Record<string, number>;
namedRoles: string[];
normalized: NormalizedSummary;
} | null;
overlap: {
namedRoleMatches: number;
namedRoleTotal: number;
ratio: number;
};
agentReadiness: AgentReadinessScores;
warnings: string[];
};
type NormalizedSummary = {
roleCounts: Record<string, number>;
namedRoles: string[];
};
type AgentReadinessScores = {
referenceRecall: number;
candidatePrecision: number;
f1: number;
actionableRecall: number;
navigationRecall: number;
contentRecall: number;
structuralContentRecall: number;
textRecall: number;
score: number;
};
const comparisonViewport = parseViewport(process.env.AX_LITE_COMPARE_VIEWPORT);
const comparisonSetupScript = readSetupScript(process.env.AX_LITE_COMPARE_SETUP);
const actionableRoles = new Set([
"button",
"checkbox",
"combobox",
"link",
"listbox",
"menuitem",
"menuitemcheckbox",
"menuitemradio",
"option",
"radio",
"searchbox",
"slider",
"spinbutton",
"switch",
"tab",
"textbox",
"treeitem",
]);
const navigationRoles = new Set([
"article",
"banner",
"complementary",
"contentinfo",
"heading",
"link",
"main",
"navigation",
"region",
"search",
]);
const contentRoles = new Set([
"cell",
"columnheader",
"definition",
"heading",
"img",
"list",
"listitem",
"p",
"row",
"rowheader",
"table",
"term",
"text",
]);
const structuralContentRoles = new Set([...contentRoles].filter((role) => role !== "text"));
const textRoles = new Set(["text"]);
const urls = process.argv.slice(2);
const targets = urls.length > 0
? urls
: ["https://example.com", "https://www.wikipedia.org"];
const comparisons: Comparison[] = [];
const browser = await puppeteer.launch({ headless: true });
try {
for (const [index, url] of targets.entries()) {
const page = await browser.newPage();
const warnings: string[] = [];
try {
if (comparisonViewport) await page.setViewport(comparisonViewport);
await page.goto(url, { waitUntil: "domcontentloaded", timeout: 30_000 });
if (comparisonSetupScript) {
await page.evaluate(comparisonSetupScript);
}
await page.waitForNetworkIdle({ idleTime: 750, timeout: 10_000 }).catch(() => {
warnings.push("Puppeteer network idle timed out; used DOMContentLoaded state");
});
const tree = await page.evaluate(
createExtractorScript({
mode: "compact",
includeBounds: false,
includeTextNodes: false,
includeSelectOptions: false,
excludeLikelyAds: true,
}),
) as SemanticNode;
const axLite = summarizeSemanticTree(tree);
const axLiteNormalized = normalizeNamedRoles(axLite.namedRoles);
const agentBrowser = runAgentBrowserSnapshot(url, `ax-grep-compare-${Date.now()}-${index}`, warnings);
const agentNamedRoles = new Set(agentBrowser?.normalized.namedRoles ?? []);
const matches = axLiteNormalized.namedRoles.filter((item) => agentNamedRoles.has(item)).length;
const namedRoleTotal = Math.max(axLiteNormalized.namedRoles.length, agentBrowser?.normalized.namedRoles.length ?? 0);
const agentReadiness = scoreAgentReadiness(axLiteNormalized, agentBrowser?.normalized ?? emptyNormalizedSummary());
comparisons.push({
url,
axLite,
axLiteNormalized,
agentBrowser,
overlap: {
namedRoleMatches: matches,
namedRoleTotal,
ratio: namedRoleTotal === 0 ? 1 : matches / namedRoleTotal,
},
agentReadiness,
warnings,
});
printTreeSample(url, tree);
} finally {
await page.close().catch(() => undefined);
}
}
} finally {
await browser.close().catch(() => undefined);
}
console.log(JSON.stringify({ generatedAt: new Date().toISOString(), comparisons }, null, 2));
function runAgentBrowserSnapshot(
url: string,
session: string,
warnings: string[],
): Comparison["agentBrowser"] {
return withAgentBrowserLock(warnings, () => runAgentBrowserSnapshotLocked(url, session, warnings));
}
function runAgentBrowserSnapshotLocked(
url: string,
session: string,
warnings: string[],
): Comparison["agentBrowser"] {
const agentBrowserBin = resolveAgentBrowserBin();
if (!agentBrowserBin) {
warnings.push("agent-browser binary was not found; skipped reference snapshot");
return null;
}
if (comparisonViewport) {
const viewport = spawnSync(agentBrowserBin, [
"--session",
session,
"set",
"viewport",
String(comparisonViewport.width),
String(comparisonViewport.height),
], {
encoding: "utf8",
timeout: 15_000,
});
if (viewport.status !== 0) {
warnings.push(`agent-browser viewport setup failed: ${trimError(viewport.stderr || viewport.stdout)}`);
}
}
const open = spawnSync(agentBrowserBin, ["--session", session, "open", url], {
encoding: "utf8",
timeout: 45_000,
});
if (open.status !== 0) {
warnings.push(`agent-browser open failed: ${trimError(open.stderr || open.stdout)}`);
return null;
}
try {
if (comparisonSetupScript) {
const setup = spawnSync(agentBrowserBin, ["--session", session, "eval", comparisonSetupScript], {
encoding: "utf8",
timeout: 15_000,
});
if (setup.status !== 0) {
warnings.push(`agent-browser setup script failed: ${trimError(setup.stderr || setup.stdout)}`);
}
}
const snapshot = spawnSync(agentBrowserBin, ["--session", session, "snapshot", "-c", "-d", "8"], {
encoding: "utf8",
timeout: 45_000,
});
if (snapshot.status !== 0) {
warnings.push(`agent-browser snapshot failed: ${trimError(snapshot.stderr || snapshot.stdout)}`);
return null;
}
return parseAgentBrowserSnapshot(snapshot.stdout);
} finally {
closeAgentBrowserSession(agentBrowserBin, session, warnings);
}
}
function closeAgentBrowserSession(agentBrowserBin: string, session: string, warnings: string[]): void {
const close = spawnSync(agentBrowserBin, ["--session", session, "close"], {
encoding: "utf8",
timeout: 10_000,
});
if (close.status !== 0) {
warnings.push(`agent-browser close failed: ${trimError(close.stderr || close.stdout)}`);
}
}
function withAgentBrowserLock<T>(warnings: string[], run: () => T): T | null {
const lockDir = join(tmpdir(), "ax-grep-agent-browser.lock");
try {
mkdirSync(lockDir);
writeFileSync(join(lockDir, "pid"), `${process.pid}\n`, "utf8");
} catch {
try {
const ageMs = Date.now() - statSync(lockDir).mtimeMs;
if (ageMs > 10 * 60_000) {
rmSync(lockDir, { recursive: true, force: true });
mkdirSync(lockDir);
writeFileSync(join(lockDir, "pid"), `${process.pid}\n`, "utf8");
} else {
warnings.push("agent-browser is already running for another comparison; skipped browser snapshot to avoid overloading the host");
return null;
}
} catch {
warnings.push("agent-browser lock could not be acquired; skipped browser snapshot to avoid overloading the host");
return null;
}
}
try {
return run();
} finally {
rmSync(lockDir, { recursive: true, force: true });
}
}
function parseAgentBrowserSnapshot(output: string): NonNullable<Comparison["agentBrowser"]> {
const roleCounts: Record<string, number> = {};
const namedRoles: string[] = [];
const contentLines = output
.split(/\r?\n/)
.filter((line) => line.trim().startsWith("- "));
for (const line of contentLines) {
const trimmed = line.trim().replace(/^- /, "");
const role = trimmed.split(/\s+/)[0] ?? "unknown";
roleCounts[role] = (roleCounts[role] ?? 0) + 1;
const name = trimmed.match(/^[a-zA-Z0-9_-]+\s+"([^"]+)"/)?.[1];
if (name) namedRoles.push(`${role}:${name}`);
}
return {
lineCount: contentLines.length,
roleCounts,
namedRoles,
normalized: normalizeNamedRoles(namedRoles),
};
}
function normalizeNamedRoles(namedRoles: string[]): NormalizedSummary {
const normalizedRoles = namedRoles.flatMap((item) => {
const [role = "unknown", ...nameParts] = item.split(":");
const normalized = `${normalizeRole(role)}:${normalizeName(nameParts.join(":"))}`;
return isComparableNamedRole(normalized) ? [normalized] : [];
});
const roleCounts: Record<string, number> = {};
for (const item of normalizedRoles) {
const role = item.split(":")[0] ?? "unknown";
roleCounts[role] = (roleCounts[role] ?? 0) + 1;
}
return {
roleCounts,
namedRoles: Array.from(new Set(normalizedRoles)),
};
}
function isComparableNamedRole(item: string): boolean {
const [role = "unknown", ...nameParts] = item.split(":");
const name = nameParts.join(":");
if (!name) return false;
if (role !== "text") return true;
return !/^(?:\\[nrt]\s*)+$/.test(name)
&& !/^[|/\\\-–—·•,.;:()[\]{}]+$/.test(name);
}
function emptyNormalizedSummary(): NormalizedSummary {
return {
roleCounts: {},
namedRoles: [],
};
}
function scoreAgentReadiness(candidate: NormalizedSummary, reference: NormalizedSummary): AgentReadinessScores {
const candidateSet = new Set(candidate.namedRoles);
const referenceSet = new Set(reference.namedRoles);
const matches = candidate.namedRoles.filter((item) => referenceSet.has(item)).length;
const referenceRecall = ratio(matches, reference.namedRoles.length, 1);
const candidatePrecision = ratio(matches, candidate.namedRoles.length, 1);
const f1 = referenceRecall + candidatePrecision === 0
? 0
: (2 * referenceRecall * candidatePrecision) / (referenceRecall + candidatePrecision);
const actionableRecall = categoryRecall(candidateSet, reference.namedRoles, actionableRoles);
const navigationRecall = categoryRecall(candidateSet, reference.namedRoles, navigationRoles);
const contentRecall = categoryRecall(candidateSet, reference.namedRoles, contentRoles);
const structuralContentRecall = categoryRecall(candidateSet, reference.namedRoles, structuralContentRoles);
const textRecall = categoryRecall(candidateSet, reference.namedRoles, textRoles);
return {
referenceRecall: roundScore(referenceRecall),
candidatePrecision: roundScore(candidatePrecision),
f1: roundScore(f1),
actionableRecall: roundScore(actionableRecall),
navigationRecall: roundScore(navigationRecall),
contentRecall: roundScore(contentRecall),
structuralContentRecall: roundScore(structuralContentRecall),
textRecall: roundScore(textRecall),
score: roundScore(
actionableRecall * 0.4
+ navigationRecall * 0.25
+ structuralContentRecall * 0.2
+ candidatePrecision * 0.15
),
};
}
function categoryRecall(candidateSet: Set<string>, referenceNamedRoles: string[], roles: Set<string>): number {
const referenceItems = referenceNamedRoles.filter((item) => roles.has(roleFromNamedRole(item)));
const matches = referenceItems.filter((item) => candidateSet.has(item)).length;
return ratio(matches, referenceItems.length, 1);
}
function roleFromNamedRole(item: string): string {
return item.split(":")[0] ?? "unknown";
}
function ratio(numerator: number, denominator: number, emptyValue = 0): number {
return denominator === 0 ? emptyValue : numerator / denominator;
}
function roundScore(value: number): number {
return Math.round(value * 1000) / 1000;
}
function normalizeRole(role: string): string {
const key = role.toLowerCase();
const aliases: Record<string, string> = {
descriptionlist: "list",
definition: "definition",
disclosuretriangle: "button",
iframe: "iframe",
image: "img",
labeltext: "text",
layouttable: "table",
layouttablecell: "cell",
layouttablerow: "row",
linebreak: "text",
paragraph: "p",
statictext: "text",
term: "term",
};
return aliases[key] ?? key;
}
function normalizeName(name: string): string {
const normalized = name
.replace(/[\uE000-\uF8FF]/g, " ")
.replace(/\s+/g, " ")
.replace(/\s+\(external\)$/i, "")
.replace(/\s+([|),])/g, "$1")
.replace(/([(])\s+/g, "$1")
.replace(/^[·•ㆍ]\s*/g, "")
.replace(/^\d+(?:\.\d+)*\s+(?=\p{L})/u, "")
.replace(/^20\d{2}年\d{1,2}月\d{1,2}日\s+\d{1,2}時\d{1,2}分\s+話題度:\d+\s*\d+レス\s+/, "")
.replace(/\s+thumbnail$/i, "")
.replace(/\s*[⌄▾▼]\s*$/g, "")
.replace(/(?<=\d)\s+(?=\p{L})/gu, "")
.trim()
.toLowerCase();
return normalizeDigitSeparators(normalized);
}
function normalizeDigitSeparators(value: string): string {
return value.replace(/(?<=\d)[\s,.\u202f\u00a0]+(?=\d{3}\b)/g, "");
}
function resolveAgentBrowserBin(): string | null {
const local = new URL("../node_modules/.bin/agent-browser", import.meta.url);
const localPath = local.pathname;
const localCheck = spawnSync("test", ["-x", localPath]);
if (localCheck.status === 0) return localPath;
const globalCheck = spawnSync("which", ["agent-browser"], { encoding: "utf8" });
if (globalCheck.status === 0) return globalCheck.stdout.trim();
return null;
}
function printTreeSample(url: string, tree: SemanticNode): void {
const flat = flattenSemanticTree(tree)
.filter((node) => node.role && node.name)
.slice(0, 12)
.map((node) => `${normalizeRole(node.role ?? "")}:${node.name}`);
console.error(`\n${url}`);
console.error(flat.join("\n"));
}
function trimError(value: string): string {
return value.replace(/\s+/g, " ").trim().slice(0, 240);
}
function parseViewport(value: string | undefined): { width: number; height: number } | null {
if (!value) return null;
const match = value.match(/^(\d+)x(\d+)$/);
if (!match) {
throw new Error(`Invalid AX_LITE_COMPARE_VIEWPORT '${value}'. Expected WIDTHxHEIGHT, for example 1365x900.`);
}
return {
width: Number(match[1]),
height: Number(match[2]),
};
}
function readSetupScript(path: string | undefined): string | null {
if (!path) return null;
return readFileSync(path, "utf8");
}