File is not getting added back to stage

Description

Hey thanks for lint-staged!! It is not adding eslint --fixed files back to the commit after fixing them.

Steps to reproduce

Here’s a copy/paste from my terminal. You’ll see that after eslint fixes test.js file, the commit happens but that file was not included in it and remains unstaged.

git status
On branch initial-dev-setup
Your branch is ahead of 'origin/initial-dev-setup' by 1 commit.

Changes to be committed:
	new file:   .eslintignore
	new file:   package-lock.json
	modified:   package.json
	new file:   test.js

> cat test.js
const a = [
1, 2, 3];

> g ca "chore: add eslint"
husky > pre-commit (node v14.4.0)
✔ Preparing...
✔ Running tasks...
✔ Applying modifications...
✔ Cleaning up...
[initial-dev-setup 1b9100d] chore: add eslint
 4 files changed, 1834 insertions(+), 3 deletions(-)
 create mode 100644 .eslintignore
 create mode 100644 package-lock.json
 create mode 100644 test.js

> g status
On branch initial-dev-setup
Your branch is ahead of 'origin/initial-dev-setup' by 2 commits.

Changes not staged for commit:
	modified:   test.js

no changes added to commit

> cat test.js
const a = [1, 2, 3];

### Debug Logs

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<details>

<summary>expand to view</summary>

husky > pre-commit (node v14.4.0) lint-staged:bin Running lint-staged@10.2.9 +0ms lint-staged:bin Options parsed from command-line: { allowEmpty: false, concurrent: true, configPath: undefined, debug: true, maxArgLength: 131072, stash: true, quiet: false, relative: false, shell: false, verbose: false } +1ms lint-staged Loading config using cosmiconfig +0ms lint-staged Successfully loaded config from /Users/xxx/package.json: lint-staged { ‘.{json,css,md}': ‘npm run format --’, '.{js}’: ‘eslint --fix’ } +25ms lint-staged:cfg Validating config +0ms Running lint-staged with the following config: { ‘.{json,css,md}': ‘npm run format --’, '.{js}’: ‘eslint --fix’ } lint-staged Unset GIT_LITERAL_PATHSPECS (was undefined) +2ms lint-staged:run Running all linter scripts +0ms lint-staged:resolveGitRepo Resolving git repo from /Users/xxx +0ms lint-staged:resolveGitRepo Unset GIT_DIR (was undefined) +0ms lint-staged:git Running git command [ ‘rev-parse’, ‘–show-toplevel’ ] +0ms lint-staged:resolveGitRepo Resolved git directory to be /Users/xxx +18ms lint-staged:resolveGitRepo Resolved git config directory to be /Users/xxx/.git +0ms lint-staged:git Running git command [ ‘log’, ‘-1’ ] +18ms lint-staged:git Running git command [ ‘diff’, ‘–staged’, ‘–diff-filter=ACMR’, ‘–name-only’, ‘-z’ ] +19ms lint-staged:run Loaded list of staged files in git: lint-staged:run [ ‘.eslintignore’, ‘package-lock.json’, ‘package.json’, ‘test.js’ ] +48ms lint-staged:chunkFiles Resolved an argument string length of 224 characters from 4 files +0ms lint-staged:chunkFiles Creating 1 chunks for maxArgLength of 131072 +0ms lint-staged:gen-tasks Generating linter tasks +0ms lint-staged:gen-tasks Generated task: lint-staged:gen-tasks { lint-staged:gen-tasks pattern: ‘.{json,css,md}', lint-staged:gen-tasks commands: ‘npm run format --’, lint-staged:gen-tasks fileList: [ lint-staged:gen-tasks ‘/Users/xxx/package-lock.json’, lint-staged:gen-tasks ‘/Users/xxx/package.json’ lint-staged:gen-tasks ] lint-staged:gen-tasks } +3ms lint-staged:gen-tasks Generated task: lint-staged:gen-tasks { pattern: '.{js}’, commands: ‘eslint --fix’, fileList: [] } +1ms lint-staged:make-cmd-tasks Creating listr tasks for commands ‘npm run format --’ +0ms lint-staged:task cmd: npm +0ms lint-staged:task args: [ ‘run’, ‘format’, ‘–’ ] +0ms lint-staged:task execaOptions: { preferLocal: true, reject: false, shell: false } +0ms lint-staged:make-cmd-tasks Creating listr tasks for commands ‘eslint --fix’ +1ms lint-staged:task cmd: eslint +1ms lint-staged:task args: [ ‘–fix’ ] +0ms lint-staged:task execaOptions: { preferLocal: true, reject: false, shell: false } +0ms lint-staged:chunkFiles Resolved an argument string length of 116 characters from 2 files +6ms lint-staged:chunkFiles Creating 1 chunks for maxArgLength of 131072 +0ms [STARTED] Preparing… lint-staged:git Backing up original state… +0ms lint-staged:git Getting partially staged files… +1ms lint-staged:git Running git command [ ‘status’, ‘-z’ ] +20ms lint-staged:git Found partially staged files: [] +16ms lint-staged:git Backing up merge state… +1ms lint-staged:file Reading file /Users/xxx/.git/MERGE_HEAD +0ms lint-staged:file Reading file /Users/xxx/.git/MERGE_MODE +0ms lint-staged:file Reading file /Users/xxx/.git/MERGE_MSG +0ms lint-staged:file File /Users/xxx/.git/MERGE_HEAD doesn’t exist, ignoring… +1ms lint-staged:file File /Users/xxx/.git/MERGE_MODE doesn’t exist, ignoring… +0ms lint-staged:file File /Users/xxx/.git/MERGE_MSG doesn’t exist, ignoring… +0ms lint-staged:git Done backing up merge state! +1ms lint-staged:git Getting deleted files… +0ms lint-staged:git Running git command [ ‘ls-files’, ‘–deleted’ ] +18ms lint-staged:git Found deleted files: [] +13ms lint-staged:git Running git command [ ‘stash’, ‘create’ ] +13ms lint-staged:git Running git command [ ‘stash’, ‘store’, ‘–quiet’, ‘–message’, ‘lint-staged automatic backup’, ‘2a976dc8166934d56292d6f73895b8ffea5da4b8’ ] +34ms lint-staged:git Done backing up original state! +58ms [SUCCESS] Preparing… [STARTED] Running tasks… [STARTED] Running tasks for *.{json,css,md} [STARTED] Running tasks for *.{js} [STARTED] npm run format – [SUCCESS] npm run format – [SUCCESS] Running tasks for *.{json,css,md} [SUCCESS] Running tasks… [STARTED] Applying modifications… lint-staged:git Adding task modifications to index… +848ms lint-staged:git Running git command [ ‘add’, ‘–’, ‘/Users/xxx/package-lock.json’, ‘/Users/xxx/package.json’ ] +872ms lint-staged:git Done adding task modifications to index! +14ms lint-staged:git Running git command [ ‘diff’, ‘–name-only’, ‘–cached’ ] +14ms [SUCCESS] Applying modifications… [STARTED] Cleaning up… lint-staged:git Dropping backup stash… +17ms lint-staged:git Running git command [ ‘stash’, ‘list’ ] +17ms lint-staged:git Running git command [ ‘stash’, ‘drop’, ‘–quiet’, ‘stash@{0}’ ] +35ms lint-staged:git Done dropping backup stash! +75ms [SUCCESS] Cleaning up… lint-staged Tasks were executed successfully! +1s [initial-dev-setup 5578a54] chore: add eslint 4 files changed, 1835 insertions(+), 4 deletions(-) create mode 100644 .eslintignore create mode 100644 package-lock.json create mode 100644 test.js

</details>

### Environment

<!-- Tell us about your development environment -->
- **OS:** macOS Mojave
- **Node.js:** 14
- **`lint-staged`:** 10.2.9
- **husky**: 4.2.5

[lfilho]

after fiddling a little, this was what did the trick, very strange:

changed: "*.{js}": "eslint --fix" to "*.js": "eslint --fix" (removed the {}).

[iiroj]

Cool, glad you got it fixed!