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feat: stringify helpers only if used #602

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merged 1 commit into from
Jul 10, 2023
Merged

feat: stringify helpers only if used #602

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127 changes: 0 additions & 127 deletions __snapshots__/lighthouse.test.ts.js
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Original file line number Diff line number Diff line change
Expand Up @@ -87,133 +87,6 @@ const puppeteer = require('puppeteer'); // v20.7.4 or later

await browser.close();

async function waitForElement(step, frame, timeout) {
const {
count = 1,
operator = '>=',
visible = true,
properties,
attributes,
} = step;
const compFn = {
'==': (a, b) => a === b,
'>=': (a, b) => a >= b,
'<=': (a, b) => a <= b,
}[operator];
await waitForFunction(async () => {
const elements = await querySelectorsAll(step.selectors, frame);
let result = compFn(elements.length, count);
const elementsHandle = await frame.evaluateHandle((...elements) => {
return elements;
}, ...elements);
await Promise.all(elements.map((element) => element.dispose()));
if (result && (properties || attributes)) {
result = await elementsHandle.evaluate(
(elements, properties, attributes) => {
for (const element of elements) {
if (attributes) {
for (const [name, value] of Object.entries(attributes)) {
if (element.getAttribute(name) !== value) {
return false;
}
}
}
if (properties) {
if (!isDeepMatch(properties, element)) {
return false;
}
}
}
return true;

function isDeepMatch(a, b) {
if (a === b) {
return true;
}
if ((a && !b) || (!a && b)) {
return false;
}
if (!(a instanceof Object) || !(b instanceof Object)) {
return false;
}
for (const [key, value] of Object.entries(a)) {
if (!isDeepMatch(value, b[key])) {
return false;
}
}
return true;
}
},
properties,
attributes
);
}
await elementsHandle.dispose();
return result === visible;
}, timeout);
}

async function querySelectorsAll(selectors, frame) {
for (const selector of selectors) {
const result = await querySelectorAll(selector, frame);
if (result.length) {
return result;
}
}
return [];
}

async function querySelectorAll(selector, frame) {
if (!Array.isArray(selector)) {
selector = [selector];
}
if (!selector.length) {
throw new Error('Empty selector provided to querySelectorAll');
}
let elements = [];
for (let i = 0; i < selector.length; i++) {
const part = selector[i];
if (i === 0) {
elements = await frame.$$(part);
} else {
const tmpElements = elements;
elements = [];
for (const el of tmpElements) {
elements.push(...(await el.$$(part)));
}
}
if (elements.length === 0) {
return [];
}
if (i < selector.length - 1) {
const tmpElements = [];
for (const el of elements) {
const newEl = (await el.evaluateHandle(el => el.shadowRoot ? el.shadowRoot : el)).asElement();
if (newEl) {
tmpElements.push(newEl);
}
}
elements = tmpElements;
}
}
return elements;
}

async function waitForFunction(fn, timeout) {
let isActive = true;
const timeoutId = setTimeout(() => {
isActive = false;
}, timeout);
while (isActive) {
const result = await fn();
if (result) {
clearTimeout(timeoutId);
return;
}
await new Promise(resolve => setTimeout(resolve, 100));
}
throw new Error('Timed out');
}
})().catch(err => {
console.error(err);
process.exit(1);
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