flipper-plugin/lib/utils/textContent.js

Flipper Desktop plugin SDK and components

"use strict";
/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.textContent = void 0;
function isReactElement(object) {
    return (typeof object === 'object' &&
        object !== null &&
        object.$$typeof === Symbol.for('react.element'));
}
function multilineTextContent(text) {
    // Replace any existing double quotes with two double quotes
    const escapedText = text.replace(/"/g, '""');
    if (escapedText.includes('\n')) {
        return `"${escapedText}"`;
    }
    else {
        return escapedText;
    }
}
/**
 * Recursively walks through all children of a React element and returns
 * the string representation of the leafs concatenated.
 */
function textContent(node) {
    let res = '';
    const traverse = (node) => {
        if (typeof node === 'string' || typeof node === 'number') {
            // this is a leaf, add it to the result string
            res += node;
        }
        else if (Array.isArray(node)) {
            // traverse all array members and recursively stringify them
            node.forEach(traverse);
        }
        else if (isReactElement(node)) {
            // node is a react element access its children an recursively stringify them
            const { children, value } = node.props;
            if (value) {
                res += multilineTextContent(value);
            }
            else if (Array.isArray(children)) {
                children.forEach(traverse);
            }
            else {
                traverse(children);
            }
        }
    };
    traverse(node);
    return res;
}
exports.textContent = textContent;
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