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diff --git a/src/component-arguments/component-argument.ts b/src/component-arguments/component-argument.ts
index f2192e6..2a4e8c7 100644
--- a/src/component-arguments/component-argument.ts
+++ b/src/component-arguments/component-argument.ts
@@ -1,47 +1,47 @@
-import { ComponentArguments, JDDContext, List, ShortText } from "../index";
+import { JDDContext, List, ShortText } from "../index";
import { MaybePromise } from "../utils/util-types";
export type ExtractComponentArgumentValue<C> = C extends List<infer S>
? S[]
: C extends ComponentArgument<infer T>
? T
: never;
export type ExtractStructuredComponentArgumentsValues<C> = {
[property in keyof C]: ExtractComponentArgumentValue<C[property]>;
};
export abstract class ComponentArgument<ARG> {
public example_values: ARG[] = [];
public parent_argument: ComponentArgument<unknown> | null = null;
abstract getTypeName(): string;
abstract getEmptyValue(): ARG;
abstract countWords(value: ARG): number;
abstract parseFormInput(
context: JDDContext,
input: unknown,
arg_name: string
): MaybePromise<ARG | ARG[] | null>;
getExampleValue(_context: JDDContext): Promise<ARG> | ARG {
return this.example_values[
Math.floor(this.example_values.length * Math.random())
];
}
setExampleValues(values: ARG[]): this {
this.example_values = values;
return this;
}
hasParent(type: string) {
let parent = this.parent_argument;
while (parent) {
if (parent.getTypeName() == type) {
return true;
}
parent = parent.parent_argument;
}
return false;
}
}
diff --git a/src/index.ts b/src/index.ts
index a271dc6..bdd4ecf 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,120 +1,132 @@
import { tempstream } from "tempstream";
import { JDDContext } from "./jdd-context";
import { Registry } from "./registry";
import { EarlyAsset } from "./component";
import { hasField } from "@sealcode/ts-predicates";
export * from "./component";
export * from "./component-arguments/component-argument";
export * as ComponentArguments from "./component-arguments/component-arguments";
export * from "./component-arguments/component-arguments"; // exporting this also as root elements to make it easier to auto-import those
export * from "./jdd-context";
export * from "./registry";
export { insert_nbsp } from "./utils/insert_nbsp";
export type JDDocument = Array<{
component_name: string;
args: Record<string, unknown>;
}>;
export function countWords(registry: Registry, document: JDDocument): number {
return document.reduce((acc, { component_name, args }) => {
const component = registry.get(component_name);
if (!component) {
console.warn(
"Component not found in the registry: " + component_name
);
return acc + 0;
}
return acc + component.countWords(args);
}, 0);
}
export async function renderEarlyAssets(
registry: Registry,
document: JDDocument,
context: JDDContext
) {
const early_assets = (
await Promise.all(
document.map(async ({ component_name, args }) => {
const component = registry.get(component_name);
if (!component) {
console.warn(
"Component not found in the registry: " + component_name
);
return [];
}
for (const arg_name in component?.getArguments()) {
if (!Object.prototype.hasOwnProperty.call(args, arg_name)) {
args[arg_name] = component
?.getArguments()
[arg_name]?.getEmptyValue();
}
}
return await component.getEarlyAssets(args, context);
})
)
).flat();
const deduplicated_assets: Record<string, EarlyAsset> = {};
for (const asset of early_assets) {
deduplicated_assets[asset.identity] = asset;
}
return Object.values(deduplicated_assets)
.map((asset) => {
if (asset.type == "script") {
if (hasField("url", asset)) {
return /* HTML */ `<script
+ async
src="${asset.url}"
onLoad="document.dispatchEvent(new Event('loaded-${asset.identity}'))"
${(asset.integrity &&
`integrity="${asset.integrity}" crossorigin=""`) ||
""}
></script>`;
} else {
return /* HTML */ `<script><${asset.content}/script>`;
}
} else if (asset.type == "style") {
if (hasField("url", asset)) {
- return /* HTML */ `<link
- rel="stylesheet"
- href="${asset.url}"
- ${(asset.integrity &&
+ const integrity =
+ (asset.integrity &&
`integrity="${asset.integrity}" crossorigin=""`) ||
- ""}
- />`;
+ "";
+ // see https://web.dev/articles/defer-non-critical-css
+ return /* HTML */ `<link
+ rel="preload"
+ href="${asset.url}"
+ as="style"
+ onload="this.onload=null;this.rel='stylesheet'"
+ ${integrity}
+ />
+ <noscript
+ ><link
+ rel="stylesheet"
+ href="${asset.url}"
+ ${integrity}
+ /></noscript>`;
} else {
return /* HTML */ `<style>
${asset.content}
</style>`;
}
}
})
.join(" ");
}
export function render(
registry: Registry,
document: JDDocument,
context: JDDContext
) {
return tempstream`${document.map(({ component_name, args }) => {
const component = registry.get(component_name);
if (!component) {
console.warn(
"Component not found in the registry: " + component_name
);
return "";
}
for (const arg_name in component?.getArguments()) {
if (!Object.prototype.hasOwnProperty.call(args, arg_name)) {
args[arg_name] = component
?.getArguments()
[arg_name]?.getEmptyValue();
}
}
return component.toHTML(args, context);
})}`;
}

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