Feature: configure maxArgLength from CLI

Description

I’m running tslint in my project. In case of normal commits, all works well but in case of a very large one (merge commit, hundreds of file in staging) tslint task fails. Also my tasks’ list is divided quite strangely (one chunk is around 100 files, another one over 500)

lint-staged:gen-tasks     ... 107 more items
lint-staged:gen-tasks     ... 521 more items

I’m manually changing the maxArgLength in bin/lint-staged.js to a much smaller value (Windows value, 8000). The whole process is divided into 50 chunks and all goes well. Can we add maxArgLength to CLI parameters?

Steps to reproduce

Debug Logs

expand to view

Running tasks (chunk 1/2)... [started]
Running tasks for dgc-ui-core/**/*.{ts,tsx} [started]
npm run lint:fix --prefix dgc-ui-core -- --format verbose [started]
npm run lint:fix --prefix dgc-ui-core -- --format verbose [completed]
Running tasks for dgc-ui-core/**/*.{ts,tsx} [completed]
Running tasks (chunk 1/2)... [completed]
Running tasks (chunk 2/2)... [started]
Running tasks for dgc-ui-core/**/*.{ts,tsx} [started]
npm run lint:fix --prefix dgc-ui-core -- --format verbose [started]
npm run lint:fix --prefix dgc-ui-core -- --format verbose [failed]

Environment

• OS: macOS Catalinia
• Node.js: 12
• lint-staged: 10.0.7

[chodorowicz]

OK, it works, thanks for help. I will close the issue

const chunkFiles = require('lint-staged/lib/chunkFiles');

// tslint fails for very large lists of files
const MAX_INPUT_LENGTH = 8000;

module.exports = {
  "*.ts": allFiles => {
    const chunkedFiles = chunkFiles({ files: allFiles, maxArgLength: MAX_INPUT_LENGTH, gitDir: "./" });
    return chunkedFiles.map(chunk => `npm run tslint -- ${chunk.join(" ")}`);
  }
}

[chodorowicz]

Thanks, I will try it out!