directory-validator

CLI Tool to validate directory structures. If you want to have control over what files/dirs a directory can have then this can be useful.

Installation

$ npm install directory-validator

Usage

Generate a configuration file .directoryvalidator.json to start with:

$ directory-validator --init

Run the validator on the current directory:

$ directory-validator .

The tool will evaluate the rules provided by the configuration file against the current directory and output errors if any.

Configuration File

{
  "ignoreFiles": [".gitignore"],
  "ignoreDirs": ["node_modules", ".git"],
  "commonRules": {
    "rule_indexfile": {
      "type": "file",
      "name": "index.js"
    }
  },
  "rules": [
    {
      "type": "file",
      "name": "package.json"
    },
    {
      "type": "common",
      "key": "rule_indexfile"
    },
    {
      "type": "directory",
      "name": "src",
      "isOptional": true,
      "rules": [
        {
          "type": "common",
          "key": "rule_indexfile"
        }
      ]
    }
  ]
}

In this example:

• We ignore the file .gitignore and both .node_modules and .git directories from being analized
• We want to have one file name package.json and one file named index.js
• We want one directory src to have one file named index.js. Since it's optional, if the directory does not exist we ignore the rule, but if it does then it must only have one file index.js

ignoreFiles:

A string or glob pattern. For example:

[
  "package.json",
  "**/*.test.js",
  ".*" // files starting with "."
]

ignoreDirs:

A string or glob pattern. For example:

[
  "node_modules",
  "src/**/tests",
  ".*" // dirs starting with "."
]

commonRules:

Define File, Directory and Common rules that can be reused in rules

{
  // key must start with "rule_"
  // Examples:
  "rule_indexfile": {
    "type": "file",
    "name": "index.js"
  },
  "rule_anotherrule": {
    "type": "directory",
    "name": "images",
    "rules": [
      {
        "type": "file",
        "name": "logo.png"
      }
    ]
  }
}

rules:

Can contain File, Directory and Common Rules

File Rule

{
  // Required
  "type": "file",

  // Required
  // can be string or RegExp
  // if RegExp then it has to start and end with /
  // if string then it can contain one
  // special case: [camelCase], [UPPERCASE], [dash-case], [snake_case], *
  // Examples:
  "name": "package.json",
  "name": "[snake_case]",
  "name": "[camelCase].js",
  "name": ".[UPPERCASE]",
  "name": ".[dash-case].jpg",
  "name": "*.png",
  "name": "/index.(js|ts)/",

  // Optional
  // default: null
  // can be string or RegExp (do not include the dot)
  // if RegExp then it has to start and end with /
  // Examples:
  "extension": "js",
  "extension": "png",
  "extension": "/(png|jpg|gif)/",

  // Optional
  // default: false
  // Whether the file can be included
  "isOptional": false
}

Directory Rule

{
  // Required
  "type": "directory",

  // Required
  // Same options as file names
  // Examples:
  "name": "src",
  "name": "important-[dash-case]",

  // Optional
  // default: false
  // Whether the directory can be included
  "isOptional": false,

  // Optional
  // default: false
  // Whether the directory can be recursive
  // Adds the ability to check directory rules recursively
  "isRecursive": false,

  // Optional
  // An array containing file and directory rules
  // If empty or omitted then we don't validate dir content
  "rules": []
}

Common Rule

{
  // Required
  "type": "common",

  // Required
  // must match a key property inside "commonRules"
  // examples:
  "key": "rule_indexfile",
  "key": "rule_test2",
  "key": "rule_whatever",

  // Optional
  // default: false
  // Whether the directory can be included
  "isOptional": false
}

Notes

• When you run $ directory-validator ./ it will look for a .directoryvalidator.json file in the current directory, if it doesn't find one, it will try to look for one in the upper directory and so on until the home directory is reached. If no file is found then no rules are applied.

• Rules are inclusive, meaning that if multiple rules match the same files/dirs, they pass.

  • For example, the rules { "name": "index.js", "type": "file" } and { "name": "[camelCase].js", "type": "file" }, will match a file index.js so they both pass.