Skip to content

doc: document deprecation of util.is* functions #2447

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

doc: document deprecation of util.is* functions #2447

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
45 changes: 30 additions & 15 deletions doc/api/util.markdown
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -167,6 +167,8 @@ formatted according to the returned Object. This is similar to how

## util.isArray(object)

Stability: 0 - Deprecated

Internal alias for Array.isArray.

Returns `true` if the given "object" is an `Array`. `false` otherwise.
Expand All @@ -180,9 +182,10 @@ Returns `true` if the given "object" is an `Array`. `false` otherwise.
util.isArray({})
// false


## util.isRegExp(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `RegExp`. `false` otherwise.

var util = require('util');
Expand All @@ -194,9 +197,10 @@ Returns `true` if the given "object" is a `RegExp`. `false` otherwise.
util.isRegExp({})
// false


## util.isDate(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `Date`. `false` otherwise.

var util = require('util');
Expand All @@ -208,9 +212,10 @@ Returns `true` if the given "object" is a `Date`. `false` otherwise.
util.isDate({})
// false


## util.isError(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is an `Error`. `false` otherwise.

var util = require('util');
Expand All @@ -222,9 +227,10 @@ Returns `true` if the given "object" is an `Error`. `false` otherwise.
util.isError({ name: 'Error', message: 'an error occurred' })
// false


## util.isBoolean(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `Boolean`. `false` otherwise.

var util = require('util');
Expand All @@ -236,9 +242,10 @@ Returns `true` if the given "object" is a `Boolean`. `false` otherwise.
util.isBoolean(false)
// true


## util.isNull(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is strictly `null`. `false` otherwise.

var util = require('util');
Expand All @@ -250,9 +257,10 @@ Returns `true` if the given "object" is strictly `null`. `false` otherwise.
util.isNull(null)
// true


## util.isNullOrUndefined(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is `null` or `undefined`. `false` otherwise.

var util = require('util');
Expand All @@ -264,9 +272,10 @@ Returns `true` if the given "object" is `null` or `undefined`. `false` otherwise
util.isNullOrUndefined(null)
// true


## util.isNumber(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `Number`. `false` otherwise.

var util = require('util');
Expand All @@ -280,9 +289,10 @@ Returns `true` if the given "object" is a `Number`. `false` otherwise.
util.isNumber(NaN)
// true


## util.isString(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `String`. `false` otherwise.

var util = require('util');
Expand All @@ -296,9 +306,10 @@ Returns `true` if the given "object" is a `String`. `false` otherwise.
util.isString(5)
// false


## util.isSymbol(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `Symbol`. `false` otherwise.

var util = require('util');
Expand All @@ -310,9 +321,10 @@ Returns `true` if the given "object" is a `Symbol`. `false` otherwise.
util.isSymbol(Symbol('foo'))
// true


## util.isUndefined(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is `undefined`. `false` otherwise.

var util = require('util');
Expand All @@ -325,9 +337,10 @@ Returns `true` if the given "object" is `undefined`. `false` otherwise.
util.isUndefined(null)
// false


## util.isObject(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is strictly an `Object` __and__ not a
`Function`. `false` otherwise.

Expand All @@ -342,9 +355,10 @@ Returns `true` if the given "object" is strictly an `Object` __and__ not a
util.isObject(function(){})
// false


## util.isFunction(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `Function`. `false` otherwise.

var util = require('util');
Expand All @@ -359,9 +373,10 @@ Returns `true` if the given "object" is a `Function`. `false` otherwise.
util.isFunction(Bar)
// true


## util.isPrimitive(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a primitive type. `false` otherwise.

var util = require('util');
Expand All @@ -385,9 +400,10 @@ Returns `true` if the given "object" is a primitive type. `false` otherwise.
util.isPrimitive(new Date())
// false


## util.isBuffer(object)

Stability: 0 - Deprecated

Returns `true` if the given "object" is a `Buffer`. `false` otherwise.

var util = require('util');
Expand All @@ -399,7 +415,6 @@ Returns `true` if the given "object" is a `Buffer`. `false` otherwise.
util.isBuffer(new Buffer('hello world'))
// true


## util.inherits(constructor, superConstructor)

Inherit the prototype methods from one
Expand Down