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This repository was archived by the owner on Jan 9, 2025. It is now read-only.
/jtmlPublic archive

Commit29fb463

Browse files
rzhade3fletchto99KyFaStJackMc
committed
Add concept of TrustedTypes policy
Co-authored-by: Matt Langlois <fletchto99@github.com>Co-authored-by: Kylie Stradley <kyfast@github.com>Co-authored-by: Jack McCracken <jackmc@github.com>
1 parent2208fa1 commit29fb463

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4 files changed

+28
-2
lines changed

4 files changed

+28
-2
lines changed

‎src/index.ts‎

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Original file line numberDiff line numberDiff line change
@@ -5,3 +5,4 @@ export {html} from './html.js'
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export{isDirective,directive}from'./directive.js'
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export{until}from'./until.js'
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export{unsafeHTML}from'./unsafe-html.js'
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export{TrustedTypesPolicy}from'./trusted-types.js'

‎src/template-result.ts‎

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Original file line numberDiff line numberDiff line change
@@ -1,9 +1,11 @@
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import{TemplateInstance,NodeTemplatePart}from'@github/template-parts'
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importtype{TemplateTypeInit}from'@github/template-parts'
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import{TrustedTypesPolicy}from'./trusted-types.js'
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consttemplates=newWeakMap<TemplateStringsArray,HTMLTemplateElement>()
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constrenderedTemplates=newWeakMap<Node|NodeTemplatePart,HTMLTemplateElement>()
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constrenderedTemplateInstances=newWeakMap<Node|NodeTemplatePart,TemplateInstance>()
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exportclassTemplateResult{
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constructor(
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publicreadonlystrings:TemplateStringsArray,
@@ -17,7 +19,11 @@ export class TemplateResult {
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}else{
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consttemplate=document.createElement('template')
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constend=this.strings.length-1
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template.innerHTML=this.strings.reduce((str,cur,i)=>str+cur+(i<end ?`{{${i} }}` :''),'')
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consthtml=this.strings.reduce((str,cur,i)=>str+cur+(i<end ?`{{${i} }}` :''),'')
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consttrustedHtml=TrustedTypesPolicy.cspTrustedTypesPolicy
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?(TrustedTypesPolicy.cspTrustedTypesPolicy.createHTML(html)asstring)
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:html
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template.innerHTML=trustedHtml
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templates.set(this.strings,template)
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returntemplate
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}

‎src/trusted-types.ts‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,15 @@
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interfaceCSPTrustedHTMLToStringable{
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toString:()=>string
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}
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interfaceCSPTrustedTypesPolicy{
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createHTML:(s:string)=>CSPTrustedHTMLToStringable
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}
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exportclassTrustedTypesPolicy{
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staticcspTrustedTypesPolicy:CSPTrustedTypesPolicy|null=null
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staticsetTrustedTypesPolicy(policy:CSPTrustedTypesPolicy|null):void{
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TrustedTypesPolicy.cspTrustedTypesPolicy=policy
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}
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}

‎src/unsafe-html.ts‎

Lines changed: 5 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,11 +1,15 @@
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import{directive}from'./directive.js'
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import{NodeTemplatePart}from'@github/template-parts'
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importtype{TemplatePart}from'@github/template-parts'
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import{TrustedTypesPolicy}from'./trusted-types.js'
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exportconstunsafeHTML=directive((value:string)=>(part:TemplatePart)=>{
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if(!(partinstanceofNodeTemplatePart))return
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consttemplate=document.createElement('template')
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template.innerHTML=value
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consttrustedValue=TrustedTypesPolicy.cspTrustedTypesPolicy
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?(TrustedTypesPolicy.cspTrustedTypesPolicy.createHTML(value)asstring)
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:value
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template.innerHTML=trustedValue
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constfragment=document.importNode(template.content,true)
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part.replace(...fragment.childNodes)
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})

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