check-prop-type

Run a prop type against a value and return any warnings

Installation

npm install check-prop-type --save

Usage

checkPropType(propType, value)

Returns a string containing an error if the given prop-type is not valid for the given value.

Returns null otherwise.

Examples (adadpted from the test suite):

import checkPropType from "check-prop-type"

const result = checkPropType(PropTypes.string, 1)
expect(result).to.be.a("string")

const result = checkPropType(PropTypes.string, "asd")
expect(result).to.be.null

const result = checkPropType(PropTypes.string.isRequired, undefined)
expect(result).to.be.a("string")