has-flag

Check if argv has a specific flag

Correctly stops looking after an -- argument terminator.

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Install

$ npm install has-flag

Usage

// foo.js
const hasFlag = require('has-flag');

hasFlag('unicorn');
//=> true

hasFlag('--unicorn');
//=> true

hasFlag('f');
//=> true

hasFlag('-f');
//=> true

hasFlag('foo=bar');
//=> true

hasFlag('foo');
//=> false

hasFlag('rainbow');
//=> false

$ node foo.js -f --unicorn --foo=bar -- --rainbow

API

hasFlag(flag, [argv])

Returns a boolean for whether the flag exists.

flag

Type: string

CLI flag to look for. The -- prefix is optional.

argv

Type: string[]
Default: process.argv

CLI arguments.

Security

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License

Current Tags

5.0.1 ... latest (4 years ago)

6 Versions

5.0.1 ... 4 years ago
5.0.0 ... 4 years ago
2.0.0 ... 9 years ago
1.0.0 ... 10 years ago
4.0.0 ... 6 years ago
3.0.0 ... 8 years ago