JavaScript Complexity Analysis for Visual Studio Code

Uses ESComplex to produces a complexity analysis report for a JavaScript projcet or file. The following metrics can calculated:

• Lines of code
• Number of parameters
• Cyclomatic complexity
• Cyclomatic complexity density
• Halstead metrics

Installation

• Install Visual Studio Code 0.10 or later.
• In the command palette (Ctrl-Shift-P or Cmd-Shift-P or F1) select Install Extension and choose JS Complexity Analysis Report.

Usage

Project analysis

Produces a per function complexity analysis report of all .js files in the project. node_modules folder is always ignored. Open command palette F1 and search for Project complexity analysis.

By default project's search.exclude configuration is used for excluding files, but included files can be configured using include and exclude glob patterns. Select Code --> Preferences --> User Settings or Workspace Settings. For example:

"complexityAnalysis.exclude": {
    "**/bower_components/**": true
},

"complexityAnalysis.include": {
    "**/app/**": true
}

File analysis

Produces a per function complexity analysis report of currently open file. Open command palette F1 and search for File complexity analysis.

By default the following metrics are shown:

• Number of parameters
• Cyclomatic complexity
• Logical lines of code

Select Code --> Preferences --> User Settings or Workspace Settings. Supported metrics are:

• cyclomatic: Cyclomatic complexity
• cyclomaticDensity: Cyclomatic density
• physicalLOC: Physical lines of code
• logicalLOC: Logical lines of code
• params: Number of parameters
• halsteadDifficulty: Halstead difficulty
• halsteadVolume: Halstead volume
• halsteadEffort: Halstead effort

For example:

"complexityAnalysis.metrics": [
    "cyclomatic",
    "cyclomaticDensity",
    "physicalLOC",
    "logicalLOC",
    "params",
    "halsteadDifficulty",
    "halsteadVolume",
    "halsteadEffort",
]

Bugs

Report them here.

Licence

MIT