{"version":3,"file":"template-content.js","sources":["../../../src/directives/template-content.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2020 Google LLC\n * SPDX-License-Identifier: BSD-3-Clause\n */\n\nimport {noChange} from '../lit-html.js';\nimport {directive, Directive, PartInfo, PartType} from '../directive.js';\n\nclass TemplateContentDirective extends Directive {\n  private _previousTemplate?: HTMLTemplateElement;\n\n  constructor(partInfo: PartInfo) {\n    super(partInfo);\n    if (partInfo.type !== PartType.CHILD) {\n      throw new Error('templateContent can only be used in child bindings');\n    }\n  }\n\n  render(template: HTMLTemplateElement) {\n    if (this._previousTemplate === template) {\n      return noChange;\n    }\n    this._previousTemplate = template;\n    return document.importNode(template.content, true);\n  }\n}\n\n/**\n * Renders the content of a template element as HTML.\n *\n * Note, the template should be developer controlled and not user controlled.\n * Rendering a user-controlled template with this directive\n * could lead to cross-site-scripting vulnerabilities.\n */\nexport const templateContent = directive(TemplateContentDirective);\n\n/**\n * The type of the class that powers this directive. Necessary for naming the\n * directive's return type.\n */\nexport type {TemplateContentDirective};\n"],"names":[],"mappings":";;;AAAA;;;;AAIG;AAKH,MAAM,wBAAyB,SAAQ,SAAS,CAAA;AAG9C,IAAA,WAAA,CAAY,QAAkB,EAAA;QAC5B,KAAK,CAAC,QAAQ,CAAC,CAAC;AAChB,QAAA,IAAI,QAAQ,CAAC,IAAI,KAAK,QAAQ,CAAC,KAAK,EAAE;AACpC,YAAA,MAAM,IAAI,KAAK,CAAC,oDAAoD,CAAC,CAAC;AACvE,SAAA;KACF;AAED,IAAA,MAAM,CAAC,QAA6B,EAAA;AAClC,QAAA,IAAI,IAAI,CAAC,iBAAiB,KAAK,QAAQ,EAAE;AACvC,YAAA,OAAO,QAAQ,CAAC;AACjB,SAAA;AACD,QAAA,IAAI,CAAC,iBAAiB,GAAG,QAAQ,CAAC;QAClC,OAAO,QAAQ,CAAC,UAAU,CAAC,QAAQ,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;KACpD;AACF,CAAA;AAED;;;;;;AAMG;MACU,eAAe,GAAG,SAAS,CAAC,wBAAwB;;;;"}