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component.ts
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component.ts
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import { FlatTemplatable } from "tempstream";
import {
ComponentArgument,
ExtractStructuredComponentArgumentsValues,
JDDContext,
} from ".";
export interface ComponentConstructor<
A extends Record<string, ComponentArgument<unknown>> = Record<
string,
ComponentArgument<unknown>
>
> {
new (): Component<A>;
}
export type EarlyAsset = (
| { type: "script" | "style"; url: string; integrity?: string }
| { type: "script" | "style"; content: string }
) & { identity: string }; // identity key will be used for deduplication
export abstract class Component<
ArgumentsT extends Record<string, ComponentArgument<unknown>> = Record<
string,
ComponentArgument<unknown>
>
> {
abstract getArguments(): ArgumentsT;
abstract toHTML(
args: ExtractStructuredComponentArgumentsValues<ArgumentsT>,
context: JDDContext
): FlatTemplatable;
async getEarlyAssets(
_args: ExtractStructuredComponentArgumentsValues<ArgumentsT>,
_context: JDDContext
): Promise<EarlyAsset[]> {
return [];
}
countWords(args: Record<string, unknown>): number {
return Object.entries(args).reduce((acc, [arg_name, value]) => {
const arg = this.getArguments()[arg_name];
if (!arg) {
console.warn(
`Arguemnt ${arg_name} was not found in the component`
);
return acc + 0;
}
return acc + arg.countWords(value);
}, 0);
}
async getExampleValues(
context: JDDContext
): Promise<ExtractStructuredComponentArgumentsValues<ArgumentsT>> {
return Object.fromEntries(
await Promise.all(
Object.entries(this.getArguments()).map(
async ([key, value]) => [
key,
await value.getExampleValue(context),
]
)
)
) as ExtractStructuredComponentArgumentsValues<ArgumentsT>;
}
}

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