96 lines
3.1 KiB
TypeScript
96 lines
3.1 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {join} from 'path';
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import {exec} from 'shelljs';
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/** The common configuration for ng-dev. */
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type CommonConfig = {
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// Github repository configuration used for API Requests, determining upstream remote, etc.
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github: {
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owner: string;
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name: string;
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}
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};
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/**
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* The configuration for the specific ng-dev command, providing both the common
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* ng-dev config as well as the specific config of a subcommand.
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*/
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export type NgDevConfig<T = {}> = CommonConfig&T;
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// The filename expected for creating the ng-dev config, without the file
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// extension to allow either a typescript or javascript file to be used.
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const CONFIG_FILE_NAME = '.ng-dev-config';
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/** The configuration for ng-dev. */
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let CONFIG: {}|null = null;
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/**
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* Get the configuration from the file system, returning the already loaded copy if it
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* is defined.
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*/
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export function getConfig(): NgDevConfig {
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// If the global config is not defined, load it from the file system.
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if (CONFIG === null) {
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// The full path to the configuration file.
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const configPath = join(getRepoBaseDir(), CONFIG_FILE_NAME);
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// Set the global config object to a clone of the configuration loaded through default exports
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// from the config file.
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CONFIG = {...require(configPath)};
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}
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// Return a clone of the global config to ensure that a new instance of the config is returned
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// each time, preventing unexpected effects of modifications to the config object.
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return validateCommonConfig({...CONFIG});
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}
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/** Validate the common configuration has been met for the ng-dev command. */
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function validateCommonConfig(config: Partial<NgDevConfig>) {
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const errors: string[] = [];
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// Validate the github configuration.
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if (config.github === undefined) {
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errors.push(`Github repository not configured. Set the "github" option.`);
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} else {
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if (config.github.name === undefined) {
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errors.push(`"github.name" is not defined`);
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}
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if (config.github.owner === undefined) {
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errors.push(`"github.owner" is not defined`);
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}
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}
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return config as NgDevConfig;
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}
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/**
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* Asserts the provided array of error messages is empty. If any errors are in the array,
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* logs the errors and exit the process as a failure.
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*/
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export function assertNoErrors(errors: string[]) {
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if (errors.length == 0) {
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return;
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}
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console.error(`Errors discovered while loading configuration file:`);
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for (const error of errors) {
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console.error(` - ${error}`);
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}
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process.exit(1);
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}
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/** Gets the path of the directory for the repository base. */
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export function getRepoBaseDir() {
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const baseRepoDir = exec(`git rev-parse --show-toplevel`, {silent: true});
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if (baseRepoDir.code) {
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throw Error(
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`Unable to find the path to the base directory of the repository.\n` +
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`Was the command run from inside of the repo?\n\n` +
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`ERROR:\n ${baseRepoDir.stderr}`);
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}
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return baseRepoDir.trim();
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}
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