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81c8620bfe
Fixes https://github.com/microsoft/TypeScript/issues/51619 Co-authored-by: Max Schmitt <max@schmitt.mx>
43 lines
1.7 KiB
TypeScript
43 lines
1.7 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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export async function queryObjectCount(type: Function): Promise<number> {
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globalThis.typeForQueryObjects = type;
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const session: import('inspector').Session = new (require('node:inspector').Session)();
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session.connect();
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try {
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await new Promise(f => session.post('Runtime.enable', f));
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const { result: constructorFunction } = await new Promise(f => session.post('Runtime.evaluate', {
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expression: `globalThis.typeForQueryObjects.prototype`,
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includeCommandLineAPI: true,
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}, (_, result) => f(result))) as any;
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const { objects: instanceArray } = await new Promise(f => session.post('Runtime.queryObjects', {
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prototypeObjectId: constructorFunction.objectId
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}, (_, result) => f(result))) as any;
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const { result: { value } } = await new Promise<any>(f => session.post('Runtime.callFunctionOn', {
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functionDeclaration: 'function (arr) { return this.length; }',
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objectId: instanceArray.objectId,
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arguments: [{ objectId: instanceArray.objectId }],
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}, (_, result) => f(result as any)));
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return value;
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} finally {
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session.disconnect();
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}
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}
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