textarea/textarea.js

A reusable multi-line text input component for Salesforce Lightning with validation and accessibility support.

// Source: https://github.com/salesforce/base-components-recipes | License: MIT | Copyright 2018, Salesforce.com, Inc
// Provided via justclaw.it.com; keep this notice with the code.
/*
 * Copyright (c) 2019, salesforce.com, inc.
 * All rights reserved.
 * SPDX-License-Identifier: MIT
 * For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/MIT
 */

import labelRequired from '@salesforce/label/c.lightning_LightningControl_required';
import { LightningElement, api, track } from 'lwc';
import { classSet } from 'c/utils';
import {
    normalizeBoolean,
    synchronizeAttrs,
    getRealDOMId,
    classListMutation,
    decorateInputForDragon,
    setDecoratedDragonInputValueWithoutEvent
} from 'c/utilsPrivate';
import {
    InteractingState,
    normal

... (truncated -- full source via MCP)