@testing-library/user-event/dist/cjs/utils/focus/resolveCaretPosition.js

Fire events the same way the user does

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

require('../click/isClickableInput.js');
require('../dataTransfer/Clipboard.js');
require('../edit/maxLength.js');
require('../edit/isEditable.js');
require('@testing-library/dom');
var selection = require('./selection.js');
require('@testing-library/dom/dist/helpers.js');
require('../keyDef/readNextDescriptor.js');
require('../misc/level.js');
require('../../options.js');
require('../../event/eventMap.js');
require('../../event/behavior/click.js');
require('../../event/behavior/cut.js');
require('../../event/behavior/keydown.js');
require('../../event/behavior/keypress.js');
require('../../event/behavior/keyup.js');
require('../../event/behavior/paste.js');
var value = require('../../document/value.js');

function resolveCaretPosition({ target , node , offset  }) {
    if (selection.hasOwnSelection(target)) {
        return {
            node: target,
            offset: offset !== null && offset !== void 0 ? offset : value.getUIValue(target).length
        };
    } else if (node) {
        return {
            node,
            offset: offset !== null && offset !== void 0 ? offset : node.nodeType === 3 ? node.nodeValue.length : node.childNodes.length
        };
    }
    return findNodeAtTextOffset(target, offset);
}
function findNodeAtTextOffset(node, offset, isRoot = true) {
    // When clicking after the content the browser behavior can be complicated:
    // 1. If there is textContent after the last element child,
    // the cursor is moved there.
    // 2. If there is textContent in the last element child,
    // the browser moves the cursor to the last non-empty text node inside this element.
    // 3. Otherwise the cursor is moved to the end of the target.
    let i = offset === undefined ? node.childNodes.length - 1 : 0;
    const step = offset === undefined ? -1 : +1;
    while(offset === undefined ? i >= (isRoot ? Math.max(node.childNodes.length - 1, 0) : 0) : i <= node.childNodes.length){
        if (offset && i === node.childNodes.length) {
            throw new Error('The given offset is out of bounds.');
        }
        const c = node.childNodes.item(i);
        const text = String(c.textContent);
        if (text.length) {
            if (offset !== undefined && text.length < offset) {
                offset -= text.length;
            } else if (c.nodeType === 1) {
                return findNodeAtTextOffset(c, offset, false);
            } else {
                // The pre-commit hooks keeps changing this
                // See https://github.com/kentcdodds/kcd-scripts/issues/218
                /* istanbul ignore else */ // eslint-disable-next-line no-lonely-if
                if (c.nodeType === 3) {
                    return {
                        node: c,
                        offset: offset !== null && offset !== void 0 ? offset : c.nodeValue.length
                    };
                }
            }
        }
        i += step;
    }
    return {
        node,
        offset: node.childNodes.length
    };
}

exports.resolveCaretPosition = resolveCaretPosition;