46 lines
1.4 KiB
TypeScript
46 lines
1.4 KiB
TypeScript
import {Express} from "express";
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import LazyLocalsCoreComponent from "../components/core/LazyLocalsCoreComponent.js";
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import AssetPreCompiler from "./AssetPreCompiler.js";
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export default abstract class ViewEngine extends AssetPreCompiler {
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protected constructor(
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targetDir: string,
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assetType: string,
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extension: string,
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outputToPublicDir: boolean,
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...additionalViewPaths: string[]
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) {
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super(targetDir, assetType, extension, outputToPublicDir, ...additionalViewPaths);
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}
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public abstract render(
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file: string,
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locals: Record<string, unknown>,
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): Promise<string>;
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public setup(app: Express, main: boolean, lazyLocalsComponent: LazyLocalsCoreComponent): void {
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app.engine(this.extension, (path, options, callback) => {
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const locals = {...options};
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lazyLocalsComponent.setupLazyLocals(locals);
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this.render(path, locals)
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.then(value => callback(null, value))
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.catch(err => callback(err));
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});
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const existingViewPaths = app.get('views');
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app.set('views', Array.isArray(existingViewPaths) ?
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[...new Set([
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...existingViewPaths,
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...this.getViewPaths(),
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])] :
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this.getViewPaths());
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if (main) {
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app.set('view engine', this.extension);
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}
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}
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}
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