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Add --fix-dry-run option #665

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Add --fix-dry-run option #665

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7b81925
Add `--fix-dry-run` option
jopemachine May 14, 2022
74d843c
Add test
jopemachine May 14, 2022
7412dd1
Update test
jopemachine May 14, 2022
cef476b
Add descriptive comment
jopemachine May 22, 2022
6b7f964
Update options-manager.js
sindresorhus May 29, 2022
be70732
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jopemachine Jun 2, 2022
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4 changes: 4 additions & 0 deletions cli.js
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ const cli = meow(`

Options
--fix Automagically fix issues
--fix-dry-run Automatically fix problems without saving the changes to the file system
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I feel like it's unclear to the user how this would even work. The user will ask themselves: "If it does not save to the file system, what's the point of it?"

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@jopemachine jopemachine May 30, 2022 •
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--fix-dry-run     Automatically fix problems without saving the changes to the file system.
                  Because the default formatter does not output the fixed code, you'll have to use another one (e.g. json)
                  This flag can be useful for integrations which need to autofix text from command line without saving it to the filesystem.
                  Note that `fix-dry-run` is mutually exclusive with the `fix` option.

How about the above one?
I'm worried about only this option's description looks too verbose because the other options' descriptions are all single lines.
These descriptions are copy-pasted from https://eslint.org/docs/user-guide/command-line-interface#--fix-dry-run without the last sentense.

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Perhaps "Preview fixed file contents" or "Print fixed file contents"?

Suggested change
--fix-dry-run Automatically fix problems without saving the changes to the file system
--fix-dry-run Preview fixed file contents

--reporter Reporter to use
--env Environment preset [Can be set multiple times]
--global Global variable [Can be set multiple times]
Expand Down Expand Up @@ -53,6 +54,9 @@ const cli = meow(`
fix: {
type: 'boolean',
},
fixDryRun: {
type: 'boolean',
},
reporter: {
type: 'string',
},
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4 changes: 4 additions & 0 deletions lib/options-manager.js
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Expand Up @@ -309,6 +309,10 @@ const buildESLintConfig = options => config => {
};
}

if (options.fixDryRun) {
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config.fix = true;
}

return {
...config,
...pick(options, ['cwd', 'filePath', 'fix']),
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1 change: 1 addition & 0 deletions readme.md
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Expand Up @@ -57,6 +57,7 @@ $ xo --help

Options
--fix Automagically fix issues
--fix-dry-run Automatically fix problems without saving the changes to the file system
--reporter Reporter to use
--env Environment preset [Can be set multiple times]
--global Global variable [Can be set multiple times]
Expand Down
15 changes: 15 additions & 0 deletions test/cli.js
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Expand Up @@ -26,6 +26,21 @@ test('fix option with stdin', async t => {
t.is(stdout, 'console.log();');
});

test('fix-dry-run option should not overwrite source file', async t => {
const cwd = await fs.promises.mkdtemp(path.join(__dirname, './temp/'));
const filepath = path.join(cwd, 'x.js');
await fs.promises.writeFile(filepath, 'console.log()\n');
await main(['--fix-dry-run', filepath], {cwd});
t.is(fs.readFileSync(filepath, 'utf8'), 'console.log()\n');
});

test('fix-dry-run option with stdin', async t => {
const {stdout} = await main(['--fix-dry-run', '--stdin', '--reporter', 'json'], {
input: 'console.log()',
});
t.is(JSON.parse(stdout)[0].output, 'console.log();\n');
});

test('stdin-filename option with stdin', async t => {
const {stdout} = await main(['--stdin', '--stdin-filename=unicorn-file'], {
input: 'console.log()\n',
Expand Down