streamlit-component-lib/dist/setupTests.js

Support code for Streamlit Components

/**
 * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
 *
 * 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 { TextEncoder, TextDecoder } from "util";
global.TextEncoder = TextEncoder;
// @ts-expect-error
global.TextDecoder = TextDecoder;
beforeEach(function () {
    // The Streamlit class defines several static fields. To avoid side effects,
    // we restore them to their original state.
    var Streamlit = require('./streamlit').Streamlit;
    Object.defineProperty(Streamlit, 'registeredMessageListener', {
        value: false,
        configurable: true,
        writable: true
    });
    Object.defineProperty(Streamlit, 'lastFrameHeight', {
        value: null,
        configurable: true,
        writable: true
    });
});