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tessl/npm-shebang-regex

Regular expression for matching Unix shebang lines at the beginning of files

88

1.54x
Overview
Eval results
Files

rubric.jsonevals/scenario-5/

{
  "context": "This criteria evaluates how well the engineer uses the shebang-regex package to solve a script validation problem, particularly focusing on understanding the package's edge cases and limitations around whitespace, line positioning, and the strict start-of-string anchor behavior.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Import shebang-regex",
      "description": "Correctly imports the shebang-regex package (e.g., `const shebangRegex = require('shebang-regex')` or equivalent ES6 import)",
      "max_score": 10
    },
    {
      "name": "Use .test() method",
      "description": "Uses the `shebangRegex.test()` method to check if strings contain shebangs at the start position",
      "max_score": 20
    },
    {
      "name": "Understand ^ anchor",
      "description": "Demonstrates understanding that shebang-regex only matches shebangs at the very beginning due to the `^` anchor, correctly distinguishing between files with shebangs at the start versus those with leading content",
      "max_score": 30
    },
    {
      "name": "Detect misplaced shebangs",
      "description": "Correctly identifies files that contain shebang patterns (`#!`) but not at the start position (e.g., after whitespace or newlines) as invalid, not as non-scripts",
      "max_score": 25
    },
    {
      "name": "Handle all categories",
      "description": "Properly classifies files into all three categories (valid, invalid, nonScripts) based on shebang presence and position",
      "max_score": 15
    }
  ]
}

Install with Tessl CLI

npx tessl i tessl/npm-shebang-regex

tile.json