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A simple package which returns true when object is type of some specific interface or type.
Lightweight library for determining types of variables based on battle-tested implementation from lodash but having a fraction of overall size.
Validates if a value is a regular expression.
- validate.io
- validate
- validation
- validator
- valid
- regular expression
- regexp
- regex
- is
- type
- check
- instanceof
- isregexp
- isregex
Additional ESLint rules.
前端工具库集合, 工作业务制作, 提高编码能力, 业务开发效率
The instanceof mechanism cross package/module versions.
SlimIO is (JavaScript Primitives & Objects type checker)
Simple Object type/name checks
- is*
- type
- typeof
- instanceof
- type name
- object name
- function name
- isString
- isNumber
- isArray
- isObject
- isPromise
- isWeakMap
- isMap
Variable type comparison
Additional ESLint rules.
Type utilities
Check if the given value is of the particular type or types.
is-any-type simple functionality alternative to check data type references such as typeof and instanceof
Pattern matcher for matching the types and structure of variables
Check if a value is an error constructor
Determine if a value is an instance of a type
Additional ESLint rules.
Safely and simply extend native Error with prototype chaining support
See what type or instance something is