chromancer/dist/utils/evaluation.js

A powerful command-line interface for automating Chrome browser using Playwright. Perfect for web scraping, automation, testing, and browser workflows.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.safeEvaluate = safeEvaluate;
exports.evaluateElementProperty = evaluateElementProperty;
exports.evaluateElementProperties = evaluateElementProperties;
/**
 * Safely evaluate JavaScript in the page context with error handling
 */
async function safeEvaluate(page, pageFunction, ...args) {
    try {
        return await page.evaluate(pageFunction, ...args);
    }
    catch (error) {
        if (error.name === 'SyntaxError') {
            throw new Error(`Invalid JavaScript expression: ${error.message}`);
        }
        throw new Error(`Failed to evaluate: ${error.message}`);
    }
}
/**
 * Get a single property from an element
 */
async function evaluateElementProperty(element, property) {
    return element.evaluate((el, prop) => {
        return el[prop];
    }, property);
}
/**
 * Get multiple properties from an element at once
 */
async function evaluateElementProperties(element, properties) {
    const defaultProperties = [
        'textContent',
        'value',
        'id',
        'className',
        'tagName',
        'href',
    ];
    const props = properties || defaultProperties;
    return element.evaluate((el, propList) => {
        const result = {};
        for (const prop of propList) {
            result[prop] = el[prop] || null;
        }
        return result;
    }, props);
}