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3106 packages found
Test if a value is an arrow function.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- function
- is
- isfunction
- arrow
- arrowfunction
- type
- View more
Test if a value is an array-like object of booleans.
Test if an object's own or inherited property has an accessor descriptor.
Test if an object's own property is readable.
Test if an object's own property has a data descriptor.
Check if the runtime is the Electron renderer process.
Check if running in a Node.js REPL environment.
Test if an object's own property is read-only.
Check if the runtime is the main Electron process.
Check if an environment is big endian.
Test if an object's own or inherited property is read-only.
Test if an object's own or inherited property is configurable.
Test if a value is an empty array-like object.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- array
- array-like
- empty
- is
- isarraylike
- object
- View more
Test if an object's own or inherited property is writable.
Test if a value is a plain object containing a circular reference.
Test if a value is an array-like object containing only nonnegative numbers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typed
- array
- typed array
- is
- istypedarray
- istyped
- View more
Test if a value is a blank string.
Test for deep equality between two values.
Test whether a string contains only alphanumeric characters.
Check if the runtime is a web worker.