2cef385e43
Update GitClient to prevent the `push` command from being run in dryMode. PR Close #41387
44 lines
1.3 KiB
TypeScript
44 lines
1.3 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC 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 {Argv} from 'yargs';
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/**
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* Add a --dry-run flag to the available options for the yargs argv object. When present, sets an
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* environment variable noting dry run mode.
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*/
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export function addDryRunFlag<T>(args: Argv<T>) {
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return args.option('dry-run' as 'dryRun', {
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type: 'boolean',
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default: false,
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description: 'Whether to do a dry run',
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coerce: (dryRun: boolean) => {
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if (dryRun) {
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process.env['DRY_RUN'] = '1';
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}
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return dryRun;
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}
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});
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}
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/** Whether the current environment is in dry run mode. */
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export function isDryRun(): boolean {
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return process.env['DRY_RUN'] !== undefined;
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}
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/** Error to be thrown when a function or method is called in dryRun mode and shouldn't be. */
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export class DryRunError extends Error {
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constructor() {
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super('Cannot call this function in dryRun mode.');
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// Set the prototype explicitly because in ES5, the prototype is accidentally lost due to
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// a limitation in down-leveling.
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// https://github.com/Microsoft/TypeScript/wiki/FAQ#why-doesnt-extending-built-ins-like-error-array-and-map-work.
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Object.setPrototypeOf(this, DryRunError.prototype);
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}
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}
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