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router_Response.js.html
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<!DOCTYPE html><html lang="en" style="font-size:16px"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Source: router/Response.js</title><!--[if lt IE 9]>
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href="RouterResponse.html">RouterResponse</a></div><div class="sidebar-section-children"><a href="RouterStack.html">RouterStack</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-global"><div>Global</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="global.html#getRoutes">getRoutes</a></div><div class="sidebar-section-children"><a href="global.html#loadRoutes">loadRoutes</a></div></div></div></div></div><div class="navbar-container" id="VuAckcnZhf"><nav class="navbar"><div class="navbar-left-items"></div><div class="navbar-right-items"><div class="navbar-right-item"><button class="icon-button search-button" aria-label="open-search"><svg><use xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" xlink:href="#light-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div><nav></nav></nav></div><div class="toc-container"><div class="toc-content"><span class="bold">On this page</span><div id="eed4d2a0bfd64539bb9df78095dec881"></div></div></div><div class="body-wrapper"><div class="main-content"><div class="main-wrapper"><section id="source-page" class="source-page"><header><h1 id="title" class="has-anchor">router_Response.js</h1></header><article><pre class="prettyprint source lang-js"><code>/**
* lambda-lambda-lambda/router
* AWS Lambda@Edge serverless application router.
*
* Copyright 2021-2023, Marc S. Brooks (https://mbrooks.info)
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*/
'use strict';
// Local modules.
const {isObject} = require('./Utils');
/**
* Provides AWS CloudFront response instance and methods.
*
* @see https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/lambda-event-structure.html#example-origin-response
*/
class RouterResponse {
/**
* @param {CloudFrontResponse|undefined} cfResObj
* CloudFront response object (optional).
*/
constructor(cfResObj = {}) {
this.cfResObj = Object.assign({
headers: {},
status: null
}, cfResObj);
Object.seal(this);
}
/**
* Return the CloudFront response data.
*
* @return {CloudFrontResponse}
*/
data() {
return this.cfResObj;
}
/**
* Return the data as JSON.
*
* @param {Object} data
* Data as object.
*
* @return {String}
*/
json(data) {
return JSON.stringify(data);
}
/**
* Return the body text.
*
* @param {String} body
* Body as string.
*
* @return {String}
*/
text(body) {
return body.toString();
}
/**
* Set HTTP response header.
*
* @param {String} key
* HTTP header key.
*
* @param {String} value
* HTTP header value.
*
* @example
* res.setHeader('Content-Type', 'text/html');
*/
setHeader(key, value) {
if (key && value) {
Object.assign(this.data().headers, {
[key.toLowerCase()]: [{key, value}]
});
}
}
/**
* Return the AWS response data.
*
* @param {Number} code
* HTTP status code.
*
* @return {Object<Function>}
*
* @example
* res.setHeader('Content-Type', 'mime/type');
* res.status(200).send(value);
* ..
*
* res.setHeader('Content-Type', 'application/json');
* res.status(200).json({hello: 'world'});
* ..
*
* res.setHeader('Content-Type', 'text/html');
* res.status(200).text('Hello World');
* ..
*
* res.setHeader('Content-Type', 'image/jpeg; charset=utf-8');
* res.status(200).data(buffer);
*/
status(code) {
this.data().status = code;
// Chain response methods.
return {
data: buffer => {
this.data().body = buffer.toString('base64');
this.data().bodyEncoding = 'base64';
},
json: obj => {
this.data().body = this.json(obj || {});
this.data().bodyEncoding = 'text';
},
text: str => {
this.data().body = this.text(str);
this.data().bodyEncoding = 'text';
},
// Determine argument type.
send: arg => {
if (Buffer.isBuffer(arg)) {
this.status(code).data(arg);
} else if (Array.isArray(arg) || isObject(arg)) {
this.status(code).json(arg);
} else if (arg) {
this.status(code).text(arg);
}
}
};
}
};
module.exports = RouterResponse;
</code></pre></article></section></div></div></div><div class="search-container" id="PkfLWpAbet" style="display:none"><div class="wrapper" id="iCxFxjkHbP"><button class="icon-button search-close-button" id="VjLlGakifb" aria-label="close search"><svg><use xlink:href="#close-icon"></use></svg></button><div class="search-box-c"><svg><use xlink:href="#search-icon"></use></svg> <input type="text" id="vpcKVYIppa" class="search-input" placeholder="Search..." autofocus></div><div class="search-result-c" id="fWwVHRuDuN"><span class="search-result-c-text">Type anything to view search result</span></div></div></div><div class="mobile-menu-icon-container"><button class="icon-button" id="mobile-menu" data-isopen="false" aria-label="menu"><svg><use xlink:href="#menu-icon"></use></svg></button></div><div id="mobile-sidebar" class="mobile-sidebar-container"><div class="mobile-sidebar-wrapper"><div class="mobile-nav-links"></div><div class="mobile-sidebar-items-c"><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-modules"><div>Modules</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="module-router_Route.html">router/Route</a></div><div class="sidebar-section-children"><a href="module-router_Utils.html">router/Utils</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-classes"><div>Classes</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="Router.html">Router</a></div><div class="sidebar-section-children"><a href="RouterRequest.html">RouterRequest</a></div><div class="sidebar-section-children"><a href="RouterResponse.html">RouterResponse</a></div><div class="sidebar-section-children"><a href="RouterStack.html">RouterStack</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-global"><div>Global</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="global.html#getRoutes">getRoutes</a></div><div class="sidebar-section-children"><a href="global.html#loadRoutes">loadRoutes</a></div></div></div><div class="mobile-navbar-actions"><div class="navbar-right-item"><button class="icon-button search-button" aria-label="open-search"><svg><use xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" xlink:href="#light-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div></div></div><script type="text/javascript" src="scripts/core.min.js"></script><script src="scripts/search.min.js" defer="defer"></script><script src="scripts/third-party/fuse.js" defer="defer"></script><script type="text/javascript">var tocbotInstance=tocbot.init({tocSelector:"#eed4d2a0bfd64539bb9df78095dec881",contentSelector:".main-content",headingSelector:"h1, h2, h3",hasInnerContainers:!0,scrollContainer:".main-content",headingsOffset:130,onClick:bringLinkToView})</script></body></html>