mirror of https://github.com/webpack/webpack.git
62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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*/
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"use strict";
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const RuntimeGlobals = require("../RuntimeGlobals");
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const Template = require("../Template");
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const HelperRuntimeModule = require("./HelperRuntimeModule");
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class CreateScriptUrlRuntimeModule extends HelperRuntimeModule {
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constructor() {
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super("trusted types");
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}
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/**
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* @returns {string} runtime code
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*/
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generate() {
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const { compilation } = this;
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const { runtimeTemplate, outputOptions } = compilation;
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const { trustedTypes } = outputOptions;
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const fn = RuntimeGlobals.createScriptUrl;
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if (!trustedTypes) {
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// Skip Trusted Types logic.
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return Template.asString([
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`${fn} = ${runtimeTemplate.returningFunction("url", "url")};`
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]);
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}
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return Template.asString([
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"var policy;",
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`${fn} = ${runtimeTemplate.basicFunction("url", [
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"// Create Trusted Type policy if Trusted Types are available and the policy doesn't exist yet.",
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"if (policy === undefined) {",
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Template.indent([
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"policy = {",
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Template.indent([
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`createScriptURL: ${runtimeTemplate.returningFunction(
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"url",
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"url"
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)}`
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]),
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"};",
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'if (typeof trustedTypes !== "undefined" && trustedTypes.createPolicy) {',
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Template.indent([
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`policy = trustedTypes.createPolicy(${JSON.stringify(
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trustedTypes.policyName
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)}, policy);`
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]),
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"}"
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]),
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"}",
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"return policy.createScriptURL(url);"
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])};`
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]);
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}
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}
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module.exports = CreateScriptUrlRuntimeModule;
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