Sha256: 37844aee8de5241959b1d2492edb011e0f6118f70546fec25390531d5a7fde31
Contents?: true
Size: 1.83 KB
Versions: 375
Compression:
Stored size: 1.83 KB
Contents
const CDP = require('chrome-remote-interface');
const axeCore = require('axe-core');
const assert = require('assert');
const { parse: parseURL } = require('url');
// Cheap URL validation
const isValidURL = input => {
const u = parseURL(input);
return u.protocol && u.host;
};
const example = async url => {
// eslint-disable-next-line new-cap
const client = await CDP();
const { Runtime: runtime, Page: page } = client;
let results;
try {
await page.enable();
await runtime.enable();
await page.navigate({ url });
// This function is injected into the browser and is responsible for
// running `axe-core`.
const browserCode = () => {
/* eslint-env browser */
return new Promise((resolve, reject) => {
const axe = window.axe;
if (!axe) {
throw new Error('Unable to find axe-core');
}
// Finally, run axe-core
axe
.run()
// For some reason, when resolving with an object, CDP ignores
// its value (`results.result.value` is undefined). By
// `JSON.stringify()`ing it, we can `JSON.parse()` it later on
// and return a valid results set.
.then(results => JSON.stringify(results))
.then(resolve)
.catch(reject);
});
};
// Inject axe-core
await runtime.evaluate({
expression: axeCore.source
});
// Run axe-core
const ret = await runtime.evaluate({
expression: `(${browserCode})()`,
awaitPromise: true
});
// re-parse
results = JSON.parse(ret.result.value);
} catch (err) {
// Ensure we close the client before exiting the fn
client.close();
throw err;
}
client.close();
return results;
};
// node axe-cdp.js <url>
const url = process.argv[2];
assert(isValidURL(url), 'Invalid URL');
example(url)
.then(results => {
console.log(results);
})
.catch(err => {
console.error('Error running axe-core:', err.message);
process.exit(1);
});
Version data entries
375 entries across 375 versions & 1 rubygems