@nithin93/sri-js
Version:
A lightweight library to enforce Subresource Integrity (SRI) for dynamically loaded scripts in the browser and to update script tags in HTML using Cheerio.
81 lines (80 loc) • 3.21 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.SRIGenerator = void 0;
exports.generateSRI = generateSRI;
exports.updateHtmlScripts = updateHtmlScripts;
exports.updateHTML = updateHTML;
const generator_1 = require("./generator");
Object.defineProperty(exports, "SRIGenerator", { enumerable: true, get: function () { return generator_1.SRIGenerator; } });
const cheerio = __importStar(require("cheerio"));
function generateSRI(options) {
return new generator_1.SRIGenerator(options);
}
/**
* Updates script tags in an HTML string with integrity attributes based on the provided configuration.
*
* @param html - The HTML string to update.
* @param config - A map of filenames to their SRI hashes.
* @returns The updated HTML string.
*/
function updateHtmlScripts(html, config, prefix, errorHandler) {
return updateHTML(html, config, prefix, errorHandler);
}
/**
* Updates script tags in an HTML string with integrity attributes based on the provided configuration.
*
* @param html - The HTML string to update.
* @param config - A map of filenames to their SRI hashes.
* @returns The updated HTML string.
*/
function updateHTML(html, config, prefix, errorHandler) {
const $ = cheerio.load(html);
$('script[src]').each((_, element) => {
const src = $(element).attr('src');
if (!src || (src && prefix && !src.includes(prefix)))
return;
const filename = src.split('/').pop() || '';
const integrity = config[filename];
if (integrity && !$(element).attr('integrity')) {
$(element).attr('integrity', integrity);
$(element).attr('crossorigin', 'anonymous');
if (errorHandler) {
$(element).attr('onerror', `${errorHandler}(event)`);
}
}
});
return $.html();
}