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Diffstat (limited to 'packages/renderers/renderer-lit/server.js')
-rw-r--r-- | packages/renderers/renderer-lit/server.js | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/packages/renderers/renderer-lit/server.js b/packages/renderers/renderer-lit/server.js deleted file mode 100644 index 1622ef619..000000000 --- a/packages/renderers/renderer-lit/server.js +++ /dev/null @@ -1,72 +0,0 @@ -import './server-shim.js'; -import '@lit-labs/ssr/lib/render-lit-html.js'; -import { LitElementRenderer } from '@lit-labs/ssr/lib/lit-element-renderer.js'; - -function isCustomElementTag(name) { - return typeof name === 'string' && /-/.test(name); -} - -function getCustomElementConstructor(name) { - if (typeof customElements !== 'undefined' && isCustomElementTag(name)) { - return customElements.get(name) || null; - } - return null; -} - -async function isLitElement(Component) { - const Ctr = getCustomElementConstructor(Component); - return !!(Ctr && Ctr._$litElement$); -} - -async function check(Component, _props, _children) { - // Lit doesn't support getting a tagName from a Constructor at this time. - // So this must be a string at the moment. - return !!(await isLitElement(Component)); -} - -function* render(tagName, attrs, children) { - const instance = new LitElementRenderer(tagName); - - // LitElementRenderer creates a new element instance, so copy over. - const Ctr = getCustomElementConstructor(tagName); - for (let [name, value] of Object.entries(attrs)) { - // check if this is a reactive property - if (name in Ctr.prototype) { - instance.setProperty(name, value); - } else { - instance.setAttribute(name, value); - } - } - - instance.connectedCallback(); - - yield `<${tagName}`; - yield* instance.renderAttributes(); - yield `>`; - const shadowContents = instance.renderShadow({}); - if (shadowContents !== undefined) { - yield '<template shadowroot="open">'; - yield* shadowContents; - yield '</template>'; - } - yield children || ''; // don’t print “undefined” as string - yield `</${tagName}>`; -} - -async function renderToStaticMarkup(Component, props, children) { - let tagName = Component; - - let out = ''; - for (let chunk of render(tagName, props, children)) { - out += chunk; - } - - return { - html: out, - }; -} - -export default { - check, - renderToStaticMarkup, -}; |