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/**
* @license
* Copyright 2017 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import {Audit} from '../audit.js';
import * as i18n from '../../lib/i18n/i18n.js';
import {MainResource} from '../../computed/main-resource.js';
const HTTP_UNSUCCESSFUL_CODE_LOW = 400;
const HTTP_UNSUCCESSFUL_CODE_HIGH = 599;
const UIStrings = {
/** Title of a Lighthouse audit that provides detail on the HTTP status code a page responds with. This descriptive title is shown when the page has responded with a valid HTTP status code. */
title: 'Page has successful HTTP status code',
/** Descriptive title of a Lighthouse audit that provides detail on the HTTP status code a page responds with. This descriptive title is shown when the page responds to requests with an HTTP status code that indicates the request was unsuccessful. */
failureTitle: 'Page has unsuccessful HTTP status code',
/** Description of a Lighthouse audit that tells the user *why* they need to serve pages with a valid HTTP status code. This is displayed after a user expands the section to see more. No character length limits. The last sentence starting with 'Learn' becomes link text to additional documentation. */
description: 'Pages with unsuccessful HTTP status codes may not be indexed properly. ' +
'[Learn more about HTTP status codes](https://developer.chrome.com/docs/lighthouse/seo/http-status-code/).',
};
const str_ = i18n.createIcuMessageFn(import.meta.url, UIStrings);
class HTTPStatusCode extends Audit {
/**
* @return {LH.Audit.Meta}
*/
static get meta() {
return {
id: 'http-status-code',
title: str_(UIStrings.title),
failureTitle: str_(UIStrings.failureTitle),
description: str_(UIStrings.description),
requiredArtifacts: ['DevtoolsLog', 'URL', 'GatherContext'],
supportedModes: ['navigation'],
};
}
/**
* @param {LH.Artifacts} artifacts
* @param {LH.Audit.Context} context
* @return {Promise<LH.Audit.Product>}
*/
static async audit(artifacts, context) {
const devtoolsLog = artifacts.DevtoolsLog;
const URL = artifacts.URL;
const mainResource = await MainResource.request({devtoolsLog, URL}, context);
const statusCode = mainResource.statusCode;
if (statusCode >= HTTP_UNSUCCESSFUL_CODE_LOW &&
statusCode <= HTTP_UNSUCCESSFUL_CODE_HIGH) {
return {
score: 0,
displayValue: `${statusCode}`,
};
}
return {
score: 1,
};
}
}
export default HTTPStatusCode;
export {UIStrings};