open-consul/ui/packages/consul-ui/app/helpers/require.js

49 lines
1.3 KiB
JavaScript

/**
* Copyright (c) HashiCorp, Inc.
* SPDX-License-Identifier: MPL-2.0
*/
import { helper } from '@ember/component/helper';
import require from 'require';
import { css } from '@lit/reactive-element';
import resolve from 'consul-ui/utils/path/resolve';
const appName = 'consul-ui';
const container = new Map();
// `css` already has a caching mechanism under the hood so rely on that, plus
// we get the advantage of laziness here, i.e. we only call css as and when we
// need to
export default helper(([path = ''], options) => {
let fullPath = resolve(`${appName}${options.from}`, path);
if (path.charAt(0) === '/') {
fullPath = `${appName}${fullPath}`;
}
let module;
if (require.has(fullPath)) {
module = require(fullPath)[options.export || 'default'];
} else {
throw new Error(`Unable to resolve '${fullPath}' does the file exist?`);
}
switch (true) {
case fullPath.endsWith('.css'):
return module(css);
case fullPath.endsWith('.xstate'):
return module;
case fullPath.endsWith('.element'): {
if (container.has(fullPath)) {
return container.get(fullPath);
}
const component = module(HTMLElement);
container.set(fullPath, component);
return component;
}
default:
return module;
}
});