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kind-of
Get the native type of a value.
arguments array boolean check date function is is-type is-type-of kind kind-of number object of
type-is
Infer the content-type of a request.
content type checking
type
Runtime validation and processing of JavaScript types
type coercion
which-builtin-type
What is the type of this builtin JS value?
type builtin ecmascript
file-type
Detect the file type of a file, stream, or data
mime file type magic archive image img pic picture flash photo video detect check
ast-module-types
Collection of useful helper functions when trying to determine module type (CommonJS or AMD) properties of an AST node.
esprima module type define require factory
is-data-descriptor
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
accessor check data descriptor get getter is keys object properties property set setter type
is-accessor-descriptor
Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
accessor check data descriptor get getter is keys object properties property set setter type
of-type
Check if the given value is of the particular type or types.
typeof value instanceof type validate validation
type-check
type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.
type check checking library
archive-type
Detect the archive type of a Buffer/Uint8Array
7zip archive buffer bz2 bzip2 check detect gz gzip mime rar zip file type
js-types
List of JavaScript types
js javascript ecmascript builtin types type data list array json
@xhmikosr/archive-type
Detect the archive type of a Buffer/Uint8Array
7zip archive buffer bz2 bzip2 check detect gz gzip mime rar zip zst zstd
@stdlib/utils-constructor-name
Determine the name of a value's constructor.
stdlib stdutils stdutil utilities utility utils util type typeof class constructor ctor name instanceof
is-descriptor
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
accessor check data descriptor get getter is keys object properties property set setter type
is-immutable-type
Check the immutability of TypeScript types
readonly immutable type typescript
@stdlib/utils-native-class
Determine the specification defined classification of an object.
stdlib stdutils stdutil utilities utility utils util type typeof native class classification specification spec
obj-props
List of properties for JavaScript objects
js javascript ecmascript builtin types type data props properties property list array json object
font-measure
Calculate metrics of a font
font type typography metrics measure line-height vertical vertical-rhythm baseline ascender descender alphabetic text-baseline hanging
is-type-of
complete type checking for node
typeof checker type is