1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/**
* Copyright 2023 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import Protocol from 'devtools-protocol';
import {CDPSession} from '../common/Connection.js';
import {ExecutionContext} from '../common/ExecutionContext.js';
import {EvaluateFuncWith, HandleFor, HandleOr} from '../common/types.js';
import {ElementHandle} from './ElementHandle.js';
declare const __JSHandleSymbol: unique symbol;
/**
* Represents a reference to a JavaScript object. Instances can be created using
* {@link Page.evaluateHandle}.
*
* Handles prevent the referenced JavaScript object from being garbage-collected
* unless the handle is purposely {@link JSHandle.dispose | disposed}. JSHandles
* are auto-disposed when their associated frame is navigated away or the parent
* context gets destroyed.
*
* Handles can be used as arguments for any evaluation function such as
* {@link Page.$eval}, {@link Page.evaluate}, and {@link Page.evaluateHandle}.
* They are resolved to their referenced object.
*
* @example
*
* ```ts
* const windowHandle = await page.evaluateHandle(() => window);
* ```
*
* @public
*/
export class JSHandle<T = unknown> {
/**
* Used for nominally typing {@link JSHandle}.
*/
[__JSHandleSymbol]?: T;
/**
* @internal
*/
constructor() {}
/**
* @internal
*/
get disposed(): boolean {
throw new Error('Not implemented');
}
/**
* @internal
*/
executionContext(): ExecutionContext {
throw new Error('Not implemented');
}
/**
* @internal
*/
get client(): CDPSession {
throw new Error('Not implemented');
}
/**
* Evaluates the given function with the current handle as its first argument.
*/
async evaluate<
Params extends unknown[],
Func extends EvaluateFuncWith<T, Params> = EvaluateFuncWith<T, Params>
>(
pageFunction: Func | string,
...args: Params
): Promise<Awaited<ReturnType<Func>>>;
async evaluate(): Promise<unknown> {
throw new Error('Not implemented');
}
/**
* Evaluates the given function with the current handle as its first argument.
*
*/
async evaluateHandle<
Params extends unknown[],
Func extends EvaluateFuncWith<T, Params> = EvaluateFuncWith<T, Params>
>(
pageFunction: Func | string,
...args: Params
): Promise<HandleFor<Awaited<ReturnType<Func>>>>;
async evaluateHandle(): Promise<HandleFor<unknown>> {
throw new Error('Not implemented');
}
/**
* Fetches a single property from the referenced object.
*/
async getProperty<K extends keyof T>(
propertyName: HandleOr<K>
): Promise<HandleFor<T[K]>>;
async getProperty(propertyName: string): Promise<JSHandle<unknown>>;
async getProperty<K extends keyof T>(
propertyName: HandleOr<K>
): Promise<HandleFor<T[K]>>;
async getProperty<K extends keyof T>(): Promise<HandleFor<T[K]>> {
throw new Error('Not implemented');
}
/**
* Gets a map of handles representing the properties of the current handle.
*
* @example
*
* ```ts
* const listHandle = await page.evaluateHandle(() => document.body.children);
* const properties = await listHandle.getProperties();
* const children = [];
* for (const property of properties.values()) {
* const element = property.asElement();
* if (element) {
* children.push(element);
* }
* }
* children; // holds elementHandles to all children of document.body
* ```
*/
async getProperties(): Promise<Map<string, JSHandle>> {
throw new Error('Not implemented');
}
/**
* A vanilla object representing the serializable portions of the
* referenced object.
* @throws Throws if the object cannot be serialized due to circularity.
*
* @remarks
* If the object has a `toJSON` function, it **will not** be called.
*/
async jsonValue(): Promise<T> {
throw new Error('Not implemented');
}
/**
* Either `null` or the handle itself if the handle is an
* instance of {@link ElementHandle}.
*/
asElement(): ElementHandle<Node> | null {
throw new Error('Not implemented');
}
/**
* Releases the object referenced by the handle for garbage collection.
*/
async dispose(): Promise<void> {
throw new Error('Not implemented');
}
/**
* Returns a string representation of the JSHandle.
*
* @remarks
* Useful during debugging.
*/
toString(): string {
throw new Error('Not implemented');
}
/**
* @internal
*/
get id(): string | undefined {
throw new Error('Not implemented');
}
/**
* Provides access to the
* {@link https://chromedevtools.github.io/devtools-protocol/tot/Runtime/#type-RemoteObject | Protocol.Runtime.RemoteObject}
* backing this handle.
*/
remoteObject(): Protocol.Runtime.RemoteObject {
throw new Error('Not implemented');
}
}
|
