Add helpIndent option (#241)

Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>

readme.md

@@ -292,6 +292,13 @@ Default: `true`
 
 Whether to allow unknown flags or not.
 
+##### helpIndent
+
+Type `number`\
+Default: `2`
+
+The number of spaces to use for indenting the help text.
+
 ## Promises
 
 Meow will make unhandled rejected promises [fail hard](https://github.com/sindresorhus/hard-rejection) instead of the default silent fail. Meaning you don't have to manually `.catch()` promises used in your CLI.

source/index.d.ts

@@ -309,6 +309,13 @@ export type Options<Flags extends AnyFlags> = {
 	@default true
 	*/
 	readonly allowUnknownFlags?: boolean;
+
+	/**
+	The number of spaces to use for indenting the help text.
+
+	@default 2
+	*/
+	readonly helpIndent?: number;
 };
 
 type TypedFlag<Flag extends AnyFlag> =

source/index.js

@@ -17,7 +17,7 @@ const buildResult = (options, parserOptions) => {
 		help = trimNewlines((options.help || '').replace(/\t+\n*$/, ''));
 
 		if (help.includes('\n')) {
-			help = redent(help, 2);
+			help = redent(help, options.helpIndent);
 		}
 
 		help = `\n${help}`;
@@ -30,7 +30,7 @@ const buildResult = (options, parserOptions) => {
 		({description} = package_);
 	}
 
-	description &&= help ? `\n  ${description}\n` : `\n${description}`;
+	description &&= help ? redent(`\n${description}\n`, options.helpIndent) : `\n${description}`;
 	help = `${description || ''}${help}\n`;
 
 	const showHelp = code => {

source/options.js

@@ -80,6 +80,7 @@ export const buildOptions = (helpText, options) => {
 		booleanDefault: false,
 		allowUnknownFlags: true,
 		allowParentFlags: true,
+		helpIndent: 2,
 		...options,
 	};
 

test/help.js

@@ -44,3 +44,24 @@ test('descriptions with no help are not indented', t => {
 		description: 'single line',
 	}).help, '\nsingle line\n');
 });
+
+test('support help shortcut with no indentation', t => {
+	t.is(meow(`
+		unicorn
+		cat
+	`, {
+		helpIndent: 0,
+		importMeta,
+	}).help, indentString('\nCLI app helper\n\nunicorn\ncat\n', 0));
+});
+
+test('no description and no indentation', t => {
+	t.is(meow(`
+		unicorn
+		cat
+	`, {
+		helpIndent: 0,
+		description: false,
+		importMeta,
+	}).help, indentString('\nunicorn\ncat\n', 0));
+});