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72 lines
2.4 KiB
TypeScript
72 lines
2.4 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { z } from 'zod';
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import { defineTool } from './tool.js';
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import * as javascript from '../javascript.js';
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import { generateLocator } from './utils.js';
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import type * as playwright from 'playwright';
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const evaluateSchema = z.object({
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function: z.string().describe('() => { /* code */ } or (element) => { /* code */ } when element is provided'),
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element: z.string().optional().describe('Human-readable element description used to obtain permission to interact with the element'),
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ref: z.string().optional().describe('Exact target element reference from the page snapshot'),
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});
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const evaluate = defineTool({
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capability: 'core',
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schema: {
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name: 'browser_evaluate',
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title: 'Evaluate JavaScript',
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description: 'Evaluate JavaScript expression on page or element',
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inputSchema: evaluateSchema,
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type: 'destructive',
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},
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handle: async (context, params) => {
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const tab = context.currentTabOrDie();
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const code: string[] = [];
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let locator: playwright.Locator | undefined;
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if (params.ref && params.element) {
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const snapshot = tab.snapshotOrDie();
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locator = snapshot.refLocator({ ref: params.ref, element: params.element });
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code.push(`await page.${await generateLocator(locator)}.evaluate(${javascript.quote(params.function)});`);
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} else {
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code.push(`await page.evaluate(${javascript.quote(params.function)});`);
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}
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return {
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code,
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action: async () => {
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const receiver = locator ?? tab.page as any;
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const result = await receiver._evaluateFunction(params.function);
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return {
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content: [{ type: 'text', text: '- Result: ' + (JSON.stringify(result, null, 2) || 'undefined') }],
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};
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},
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captureSnapshot: false,
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waitForNetwork: false,
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};
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},
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});
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export default [
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evaluate,
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];
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