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packages/angular_devkit/build_angular/src/utils/load-esm.ts
33 строки
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Ash Ramirez
refactor(@angular/cli): update aio links -> adev links
06 июн 2024, 12:12
06 июн 2024, 12:12
434a374
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/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.dev/license */ /** * Lazily compiled dynamic import loader function. */ let load: (<T>(modulePath: string | URL) => Promise<T>) | undefined; /** * This uses a dynamic import to load a module which may be ESM. * CommonJS code can load ESM code via a dynamic import. Unfortunately, TypeScript * will currently, unconditionally downlevel dynamic import into a require call. * require calls cannot load ESM code and will result in a runtime error. To workaround * this, a Function constructor is used to prevent TypeScript from changing the dynamic import. * Once TypeScript provides support for keeping the dynamic import this workaround can * be dropped. * * @param modulePath The path of the module to load. * @returns A Promise that resolves to the dynamically imported module. */ export function loadEsmModule<T>(modulePath: string | URL): Promise<T> { load ??= new Function('modulePath', `return import(modulePath);`) as Exclude< typeof load, undefined >; return load(modulePath); }