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has-flag
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has-flag

index.js
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package.json
readme.md

readme.md

has-flag ![Build Status](https://travis-ci.org/sindresorhus/has-flag)

Check if [argv](https://nodejs.org/docs/latest/api/process.html#process_process_argv) has a specific flag

Correctly stops looking after an -- argument terminator.

Install

$ npm install has-flag

Usage

js
// 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[]<br> Default: process.argv

CLI arguments.

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