In magento 2 how to override stock availability in product detail page in custom module
app/code/Vendor/Module/view/frontend/layout/catalog_product_view.xml
<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
<referenceContainer name="product.info.type">
<block class="Magento\Catalog\Block\Product\View\Type\Simple" name="product.info.simple" as="product_type_data" template="Vendor_Module::product/view/type/default.phtml"/>
</referenceContainer>
</body>
</page>
app/code/Vendor/Module/view/frontend/templates/product/view/type/default.phtml
<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
// @codingStandardsIgnoreFile
?>
<?php /* @var $block \Magento\Catalog\Block\Product\View\AbstractView */?>
<?php $_product = $block->getProduct() ?>
<?php if ($block->displayProductStockStatus()): ?>
<?php if ($_product->isAvailable()): ?>
<div class="stock available" title="<?= /* @escapeNotVerified */ __('Availability') ?>">
<span><?= /* @escapeNotVerified */ __('In stock with static text') ?></span>
</div>
<?php else: ?>
<div class="stock unavailable" title="<?= /* @escapeNotVerified */ __('Availability') ?>">
<span><?= /* @escapeNotVerified */ __('Out of stock') ?></span>
</div>
<?php endif; ?>
<?php endif; ?>
