@ampproject/rollup-plugin-closure-compiler
Version:
Rollup + Google Closure Compiler
44 lines (43 loc) • 1.92 kB
TypeScript
/**
* Copyright 2018 The AMP HTML Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { ChunkTransform } from '../../transform';
import { TransformInterface } from '../../types';
import MagicString from 'magic-string';
export default class ImportTransform extends ChunkTransform implements TransformInterface {
private importedExternalsSyntax;
private importedExternalsLocalNames;
dynamicImportPresent: boolean;
name: string;
/**
* Generate externs for local names of external imports.
* Otherwise, advanced mode compilation will fail since the reference is unknown.
* @return string representing content of generated extern.
*/
extern(): string | null;
/**
* Before Closure Compiler modifies the source, we need to ensure external imports have been removed
* since Closure will error out when it encounters them.
* @param code source to parse, and modify
* @return modified input source with external imports removed.
*/
pre: (fileName: string, source: MagicString) => Promise<MagicString>;
/**
* After Closure Compiler has modified the source, we need to re-add the external imports
* @param code source post Closure Compiler Compilation
* @return Promise containing the repaired source
*/
post(fileName: string, source: MagicString): Promise<MagicString>;
}