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4015 packages found
Check if a Buffer/Uint8Array is a postscript
Make safe and easy assertions on structure of object and data types
Check if a Buffer/Uint8Array is a WebP image
Get the type of a variable or one unevaluated operand
Typeguard to check if a value matches a zod schema
Thorough javascript type checker
A tiny type checker
Checks whether a value is empty or not.
A recursive run-time type checking package that is simple to use yet provides all the functionality you will ever need. Written by and for Typescript.
Assert-style non-intrusive type checking.
Check if a Buffer/Uint8Array is a BMP image
Check if the given value is of a specific type.
- check
- type
- typeof
- isArray
- isNumber
- isObject
- isNull
- isUndefined
- isNil
- isBoolean
- isString
- array
- number
- object
- View more
Companion module for SJOT schemas (npm package sjot), creates a SJOT schema from JSON data to efficiently validate and type-check JSON data streams.
Check if a Buffer/Uint8Array is a TIFF image
JavaScript Object Filter. Deep filtering key/content recursively. Support type checking, wildcard, nested, and filter function in template.
Check if a Buffer/Uint8Array is a PSD image
Webpack plugin that runs TypeScript's type checker
Schemas for JSON Objects, or simply SJOT, offers faster JSON validation and type checking with lightweight schemas and compact validators. SJOT schemas have the look and feel of object templates and are easy to use.
Typesafety with strong inference