ng-packagr/lib/ngc/create-emit-callback.js

Compile and package a TypeScript library to Angular Package Format

"use strict";
// XX: internal in ngc's `main()`, a tsickle emit callback is passed to the tsc compiler
// ... blatantly copy-paste the emit callback here. it's not a public api.
// ... @link https://github.com/angular/angular/blob/24bf3e2a251634811096b939e61d63297934579e/packages/compiler-cli/src/main.ts#L36-L38
Object.defineProperty(exports, "__esModule", { value: true });
exports.createEmitCallback = void 0;
/*
 * @license
 * Copyright Google Inc. 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.io/license
 */
// @link https://github.com/angular/angular/blob/24bf3e2a251634811096b939e61d63297934579e/packages/compiler-cli/src/transformers/util.ts#L14
const GENERATED_FILES = /(.*?)\.(ngfactory|shim\.ngstyle|ngstyle|ngsummary)\.(js|d\.ts|ts)$/;
// @link https://github.com/angular/angular/blob/83d207d/packages/compiler-cli/src/main.ts#L42-L84
function createEmitCallback(options) {
    const transformDecorators = !options.enableIvy && options.annotationsAs !== 'decorators';
    const transformTypesToClosure = options.annotateForClosureCompiler;
    if (!transformDecorators && !transformTypesToClosure) {
        return undefined;
    }
    if (options.annotateForClosureCompiler || options.annotationsAs === 'static fields') {
        if (transformDecorators) {
            // This is needed as a workaround for https://github.com/angular/tsickle/issues/635
            // Otherwise tsickle might emit references to non imported values
            // as TypeScript elided the import.
            options.emitDecoratorMetadata = true;
        }
        const tsickleHost = {
            shouldSkipTsickleProcessing: fileName => /\.d\.ts$/.test(fileName) || GENERATED_FILES.test(fileName),
            pathToModuleName: (_context, _importPath) => '',
            shouldIgnoreWarningsForPath: _filePath => false,
            fileNameToModuleId: fileName => fileName,
            googmodule: false,
            untyped: true,
            convertIndexImportShorthand: false,
            transformDecorators,
            transformTypesToClosure,
        };
        return ({ program, targetSourceFile, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers = {}, host, options, }) => 
        // tslint:disable-next-line:no-require-imports only depend on tsickle if requested
        require('tsickle').emitWithTsickle(program, Object.assign(Object.assign({}, tsickleHost), { options, host, moduleResolutionHost: host }), host, options, targetSourceFile, writeFile, cancellationToken, emitOnlyDtsFiles, {
            beforeTs: customTransformers.before,
            afterTs: customTransformers.after,
        });
    }
    return undefined;
}
exports.createEmitCallback = createEmitCallback;
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