mirror of https://github.com/webpack/webpack.git
96 lines
2.5 KiB
JavaScript
96 lines
2.5 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const RuntimeGlobals = require("../RuntimeGlobals");
|
|
const Template = require("../Template");
|
|
const HelperRuntimeModule = require("./HelperRuntimeModule");
|
|
|
|
class GetTrustedTypesPolicyRuntimeModule extends HelperRuntimeModule {
|
|
/**
|
|
* @param {ReadonlySet<string>} runtimeRequirements runtime requirements
|
|
*/
|
|
constructor(runtimeRequirements) {
|
|
super("trusted types policy");
|
|
this.runtimeRequirements = runtimeRequirements;
|
|
}
|
|
|
|
/**
|
|
* @returns {string} runtime code
|
|
*/
|
|
generate() {
|
|
const { compilation } = this;
|
|
const { runtimeTemplate, outputOptions } = compilation;
|
|
const { trustedTypes } = outputOptions;
|
|
const fn = RuntimeGlobals.getTrustedTypesPolicy;
|
|
const wrapPolicyCreationInTryCatch = trustedTypes
|
|
? trustedTypes.onPolicyCreationFailure === "continue"
|
|
: false;
|
|
|
|
return Template.asString([
|
|
"var policy;",
|
|
`${fn} = ${runtimeTemplate.basicFunction("", [
|
|
"// Create Trusted Type policy if Trusted Types are available and the policy doesn't exist yet.",
|
|
"if (policy === undefined) {",
|
|
Template.indent([
|
|
"policy = {",
|
|
Template.indent(
|
|
[
|
|
...(this.runtimeRequirements.has(RuntimeGlobals.createScript)
|
|
? [
|
|
`createScript: ${runtimeTemplate.returningFunction(
|
|
"script",
|
|
"script"
|
|
)}`
|
|
]
|
|
: []),
|
|
...(this.runtimeRequirements.has(RuntimeGlobals.createScriptUrl)
|
|
? [
|
|
`createScriptURL: ${runtimeTemplate.returningFunction(
|
|
"url",
|
|
"url"
|
|
)}`
|
|
]
|
|
: [])
|
|
].join(",\n")
|
|
),
|
|
"};",
|
|
...(trustedTypes
|
|
? [
|
|
'if (typeof trustedTypes !== "undefined" && trustedTypes.createPolicy) {',
|
|
Template.indent([
|
|
...(wrapPolicyCreationInTryCatch ? ["try {"] : []),
|
|
...[
|
|
`policy = trustedTypes.createPolicy(${JSON.stringify(
|
|
trustedTypes.policyName
|
|
)}, policy);`
|
|
].map(line =>
|
|
wrapPolicyCreationInTryCatch ? Template.indent(line) : line
|
|
),
|
|
...(wrapPolicyCreationInTryCatch
|
|
? [
|
|
"} catch (e) {",
|
|
Template.indent([
|
|
`console.warn('Could not create trusted-types policy ${JSON.stringify(
|
|
trustedTypes.policyName
|
|
)}');`
|
|
]),
|
|
"}"
|
|
]
|
|
: [])
|
|
]),
|
|
"}"
|
|
]
|
|
: [])
|
|
]),
|
|
"}",
|
|
"return policy;"
|
|
])};`
|
|
]);
|
|
}
|
|
}
|
|
|
|
module.exports = GetTrustedTypesPolicyRuntimeModule;
|