has-proto

Does this environment have the ability to get the [[Prototype]] of an object on creation with `proto`?

v1.0.3 URL: https://unpkg.com/has-proto@1.0.3/index.js

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prototype proto set get __proto__getPrototypeOf setPrototypeOf has

hasown

A robust, ES3 compatible, "has own property" predicate.

v2.0.2 URL: https://unpkg.com/hasown@2.0.2/index.js

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has hasOwnProperty hasOwn has-own own has property in javascript ecmascript

has-property-descriptors

Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

v1.0.2 URL: https://unpkg.com/has-property-descriptors@1.0.2/index.js

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property descriptors has environment env defineProperty getOwnPropertyDescriptor

has-flag

Check if argv has a specific flag

v5.0.1 URL: https://unpkg.com/has-flag@5.0.1/index.js

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has check detect contains find flag cli command-line argv process arg args argument arguments getopt minimist optimist

has-ansi

Check if a string has ANSI escape codes

v6.0.0 URL: https://unpkg.com/has-ansi@6.0.0/index.js

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ansi styles color colour colors terminal console string tty escape shell xterm command-line text regex regexp match test find pattern has